1. No category

To The Owner/Operator
Off-the-road tires are expensive pieces of equipment
They are engineered and built with massive strength to support today’s equipment. This
equipment is carrying ever increasing heavier loads at higher speeds and over longer distances than ever before.
Years of research and development have resulted in tires that can offer long service lives
under these conditions. High strength carcasses have been developed to offer more load
carrying capacity. New, tougher, higher quality components have improved durability.
Improved rubber technology has helped to improve carcass durability, tread wear and hazard
resistance ability.
Still, there is a limit to the abuse and punishment any tire will take. Too many end up on
a scrap pile because operators ignore common sense driving and operational practices.
Others go out of service prematurely because they were not properly maintained.
This manual, based on long term, extensive OTR field experience and practice, is designed
to provide the information needed to help achieve maximum service life for both the end
user and the equipment manufacturer. If followed, these recommendations will also help
lower ton mile or tonne kilometer costs, improve equipment productivity and promote
operating profits.
This Booklet Applies To Earthmover Tires And
Their Applications Only. It Does Not Apply To
Other Tire Lines And Applications
1
CONTENTS
Section I - Maintenance and Operations
Construction Features ..................................................................................... 4
Basic Factors in Tire Maintenance.....................................................................5
Tires and Operating Conditions .........................................................................7
Project/Mine Manager and Job Superintendent Responsibilities ......................7
Engineering Department Responsibilities..........................................................7
Operations/Production Department Responsibilities .........................................8
Conscientious Operation by Drivers ...............................................................10
Shovel/Wheel Loader Operators ....................................................................10
Loader/Dozer Operators .................................................................................11
Grader Operators ............................................................................................11
Watertruck or Wagon Operators .....................................................................12
Scraper Operators ...........................................................................................12
Tire Department Responsibilities ....................................................................12
Overinflation/Underinflation ............................................................................12
Correct Tire Inflation / Proper Tire Inflation ......................................................14
Essential Parts of a sound Inflation Maintenance Program .............................15
Matching of Tires on Rear Duals ....................................................................16
How to Calculate Loads and Load Distribution................................................18
Burned Beads .................................................................................................19
Repairs ...........................................................................................................21
Recapping........................................................................................................22
Handling and Storage of Tires, Tubes and Rims .............................................22
New Tires.........................................................................................................22
Used Tires .......................................................................................................23
Mounted Tires .................................................................................................23
Tubes ..............................................................................................................23
Section II - Procedure for Changing Tires and Tubes
Nitrogen Inflation..............................................................................................24
Tire Changing Equipment and Tools................................................................25
Safety Instructions ...........................................................................................26
General ............................................................................................................26
Demounting .....................................................................................................26
Inspection ........................................................................................................27
Mounting and Inflation .....................................................................................29
Operation ........................................................................................................31
Servicing Tire and Rim on Machine .................................................................33
Demounting Procedures ..................................................................................35
Demounting Instructions - Semi Drop-Center Wheels.....................................36
Demounting Instructions - Single Piece Wheels..............................................38
Horizontal Demounting 25”- 49” Diameter Rims..............................................40
2
Horizontal Demounting 51” and Larger HDT Rims ..........................................42
Vertical Demounting Tires on a Machine ........................................................44
Demounting Tube-Type Off-The-Highway Tires ..............................................46
Inflation Procedures for Proper Mounting ........................................................46
Mounting Off-The-Road Tires .........................................................................47
Mounting Bias Off-The-Road Tires on EM Rims..............................................49
Mounting Radial Off-The-Road Tires on EM Rims ..........................................52
Mounting Radial Off-The-Road Tires on Single Piece Wheels ........................55
Mounting Tires on a Machine ..........................................................................57
Mounting Tube-Type Off-The-Highway Tires ..................................................60
Section III - Tire Selection for Expected Service Conditions
Tire Selection Criteria .....................................................................................61
Higher vs. Lower Inflation Pressure. ...............................................................62
Ton Mile Per Hour (TMPH/TKPH) Requirement ..............................................63
The Work Capability Factor (WCF)..................................................................65
Job Conditions ................................................................................................67
Ballasted Tires .................................................................................................68
Earthmover Tires
Bias Construction – Haulage Service .............................................................71
Bias Construction – Haulage - Scraper Service ..............................................72
Bias Construction – Dozer/Loader Service .....................................................73
Bias Construction – Grader Service. ..............................................................75
Bias Construction – Mine Service ...................................................................76
Bias Construction – Port and Container Service ............................................76
Radial Construction – Scraper Service ...........................................................77
Radial Construction – Articulated Dump Truck Service ..................................78
Radial Construction – Haulage Service ..........................................................79
Radial Construction – Dozer/Loader Service...................................................80
Radial Construction – Loader/Underground Mine Service ..............................82
Radial Construction – Mobile Crane Service ...................................................82
Radial Construction – Grader Service ............................................................83
Section IV - Load and Inflations For Goodyear Off-The-Road Tires
Index ...............................................................................................................84
3
SECTION 1
Construction Features
Basic Design
Œ
Ž
Earthmover tires are produced in three
basic constructions:
• Bias
• Bias/Belted
• Radial
All share a common nomenclature.

Tread
The part of the tire in contact with the
ground. It must provide traction, long wear
and cut resistance. The tread depth and design vary based on site and application.

Fig. 1 Bias Tire
Œ
Carcass
Contains the inflation medium. The
greater its strength, the greater the pressure
it can hold. Bias and bias/belted tire carcasses use many angled plies of fabric to
achieve strength. Radials have one ply of
steel wire.
Ž

Breakers (Belts)
These are placed between the tread and
carcass. They help to join these parts. They
also distribute road shock to protect the
carcass. In bias/belted and radial constructions, they control the diameter of the tire.
They also impart superior tread impact and
penetration resistance.

Fig. 1B Bias/Belted Tire
Œ
Ž
Bead
Bundles of high tensile steel wire. They anchor the tire to the rim. Bias and
bias/belted tires may have several bead
bundles. Radials have one large bead bundle.


Fig. 1C Radial Tire
Sidewalls
The protective rubber cover on the side of
a tire. The rubber is compounded to flex
without cracking. It also resists cuts and
ΠTread
 Carcass
Ž Breakers
 Bead
4
Inner Liner
A specially formulated rubber compound inside the tire that minimizes permeation. It
works with the rim and O-ring to contain
the inflation medium in tubeless designs.
forms a barrier to protect the carcass from
the weather.
Basic Factors Tire Maintenance
UNDEFLECTED
(Zero Load)
NORMAL
DEFLECTION
(Rated Load/Inflation)
Deflection
Many people think that deflection describes the bulge at the bottom of a loaded
tire. Actually, this bulge occurs as a result of
deflection.
OVERDEFLECTION
(Overload and/or
Underinflation)
Static Loaded Radius is measured with the
weight of the vehicle and payload on the
tire. Static means that the tire is standing
still.
The deflection is the difference between
the Unloaded Radius and Static Loaded
Radius. This is the same distance that the
axle lowers when the vehicle is fully
loaded.
Deflection really describes the change in
the tire’s radius when a normal load is applied. The radius is measured from the center of the axle/hub to the ground (See
Figure 2, above).
Deflection is extremely important. Engineers design tires to operate at a certain percentage of deflection. Operating with too
much deflection reduces tire life.
Unloaded Radius is measured with no
weight on the tire. The tire is mounted on
a rim and inflated to working pressure. The
tire is stood and supported so the tread
touches the ground. However, no load is
applied (ie. not even the weight of the tire
and rim).
Load and Pressure Relationship
Each tire is designed to carry a specific load
at a specific inflation pressure. (Load/Inflation Tables are in the back of this book).
When the tire is inflated to the correct
5
A2 5 mph 10 kmph
B 30 mph 50 kmph
E 43 mph 70 kmph
pressure for the load, deflection will be
within design limits.
Loading a tire above the specified limit will
result in overdeflection.
NOTE: none of the terms (PR, Symbol, Star,
LISS) indicate the actual number of plies.
Inflating a tire above the specified limit
will result in underdeflection.
There are factors other than inflation pressure which affect tire load capacity. Larger
tires (with larger internal air volumes) can
carry higher loads at the same pressure.
WARNING
Overinflation and or overloading can lead to
a tire explosion. This can lead to death,
serious injury or property damage. Do not
overinflate or overload OTR tires.
Load capacity also varies with speed. The tire
standards associations (T&RA, ETRTO and
JATMA) publish tables of maximum loads
at specified speeds. These tables correspond
to:
For a given tire size, inflation pressure determines how much load can be carried (the
inflation medium can be air or nitrogen).
• 30 MPH (50 KMPH) for scrapers,
trucks.
THE MOST IMPORTANT AND CRITICAL PART OF TIRE MAINTENANCE
IS MAINTAINING PROPER INFLATION PRESSURE.
• 25 MPH (40 KMPH) for graders.
Loads
• Drive-away speeds for roading
equipment.
• 5 MPH (10 KMPH) for dozers,
loaders.
The inflation pressure carries the load. The
tire’s pressure capacity is determined by its
carcass strength.
Operators sometimes overload tires. They
are willing to sacrifice tire performance for
fewer trips or higher production (bigger
loads).
Carcass strength is indicated by a ply rating (PR) for bias and bias/belted tires. Symbol or Star Ratings are used to indicate
radial tire strength (symbol and star mean
the same thing).
Some Off-the-road tires are marked with
Load Indexes and Speed Symbols. A Load
Index is a numerical code associated with
the maximum load a tire can carry at the
speed indicated by the Speed Symbol under
specified service conditions. A Speed Symbol indicates the maximum speed that the
tire was designed to operate under specified service conditions. Some Earthmover
Speed symbols are:
Fig. 3. Ply separation/fatigue due to overloading.
Even a slight, but constant, overload will
result in reduced tire performance. This
6
leads directly to a higher cost per ton mile
or kilometer.
Project or Mine Manager and Job
Superintendent Responsibilities
Overloading may lead to premature tire
failure. If inflation pressure is not adjusted
to heavier loads, tires will become unserviceable due to:
Successful tire cost management and control begins with top management.
Their involvement in the program will emphasize its importance. They are also in the
best position to anticipate changes in tire
requirements.
• Tread and ply separation.
• Disintegration of the carcass and
inner liner (fatigue).
• Radial sidewall cracking.
• Excessive bead chafing.
Changes often occur as a project progresses.
For example, hauls may get longer. Higher
speeds or heavier loads may be required to
maintain production. These may require a
change in tires or equipment used.
Overloads with the inflation adjusted to
compensate may exceed the carcass
strength. This will result in:
A keen, dedicated, cost conscious, tirewise
manager or superintendent will be aware of
these ongoing changes. Appropriate tires
and equipment can then be ordered as
needed.
• Impact breaks and cuts.
• Rapid wear.
• Fabric fatigue (loss of nylon cord or
steel cables strength).
Engineering Department
Responsibilities
Tires and Operating Conditions
Haulroad design plays an important role in
tire cost control. Both tire wear and hazard
exposure can be minimized by proper design. This is especially true on larger projects where roads are used for a long time.
Tires represent one of the major direct expenses in off-the-road (OTR) equipment
operations.
Regular maintenance will help OTR tires
last longer. Longer life translates directly to
a lower cost per ton-mile.
Layout and surface condition of the
haulroad affect tire life.
Every OTR project should have a tire
maintenance program. The program should
be overseen by a team which includes
members from:
Steep grades, sharp turns, poor superelevation increase tire slippage resulting in fast,
abrasive tread wear.
Imbedded or loose rocks increase tread cutting, sidewall cutting, and impact break hazards. They often lead to speed restrictions
which reduce production. Equipment breakdown and maintenance costs also increase.
• Project Management /Job
Superintendent.
• Engineering Department
Representative.
• Operations/Mining Department.
• Maintenance Department
Representative.
• Tire Department Representative.
Tire company representatives can serve as
a resource for the OTR tire team.
7
Poor drainage leads to mud and chuck
holes. These result in tire spinning, fast
tread wear, cuts and increased vehicle fuel
usage.
Vehicle travel speed affects the need for
superelevation more than curve radius.
Table 1 shows the effects of different speeds
and radii on superelevation requirements.
TABLE 1
Vehicle
MPH
15
30
15
30
Speed
KPH
24
48
24
48
Curve Radius SuperElev
FT
M
Grade Reqd.
200
200
400
400
61
61
122
122
7.5%
30%
3.5%
15%
In actual practice, haulroad superelevation
seldom exceeds 4-5%. This minimizes top
dressing flow in rainy or wet operating
conditions.
In addition, site size, topography and
ground conditions often restrict curve radii.
Reduced speed on curves is the most practical way to minimize centrifugal side forces
on tires.
The cost of equipment and labor to maintain haulroads is significant. However, the
cost of delays and tire and equipment repair is far greater.
The U.S.A. Department of the Interior
publication, Design of Surface Mine
Haulage Roads Bureau of Mines Information Circular 8758, contains additional information on mine/project haulage road
design.
Permanent haulroad criteria should be:
1) Maximum grade not to exceed 7%.
2) Road width to allow two trucks to pass
without spillage. A two lane road
should be 3.5 times the widest vehicle.
A three lane road 5.0 times the widest
vehicle.
Operations Department
Responsibilities
The people who operate equipment play a
very key role in how well tires perform.
3) Road crown, slope or crossfall as flat as
possible and still drain. Typical road
crown is 2%- 4% (2.5”-5.0” drop per 10’
of lane width/6.4 cm-12.7 cm drop per
3.0 meters of lane width).
Driver/operator education should include
more than how to drive. Drivers who learn
and follow tire procedures to identify and
avoid tire obstructions help reduce tire
costs. These rules include:
4) Curve radii as large as possible.
Haulroads should be superelevated to
correspond to vehicle travel speeds.
Superelevation minimizes the variation
in tire load while transversing a curve
which may lead to longer tire life.
1) Visually inspect all tires and perform
hot inflation checks at the start of each
shift.
8
5) Never turn front steering axle tires
when the vehicle is standing. This creates very high stress and sheer forces
within the tires.
2) Keep front windshield, headlights and
rear view mirrors clean. This provides
good visibility needed to avoid hazards.
3) Check to be sure rear axle rock ejectors
are in place and working properly (Fig.
6). Remove rocks lodged between dual
tires (Fig. 7).
6) Keep off windrows. These are often present when haulroads are being graded.
7) Do not drive on the berm of the road.
Obstructions are often present.
8) Do not drive over spillage. Spillage can
damage tires. Report it so that it can be
cleaned up (Fig. 8).
Fig. 8.
Fig. 6.
9) Do not drive or back over rocks at
shovel or dump areas. (Fig. 9)
Fig. 7.
Fig. 9.
4) Avoid waterholes/potholes as they could
hide submerged tire hazards.
10) Do not spin tires. This includes
jackrabbit starts and locked brake stops.
9
Check tires for damage due to machine obstructions. Spring clips, fender bolts and
other components may clear tires in normal service. Under unusual operating conditions, vehicle body movement may cause
contact with tires. Cutting or abrasion can
result. Dry, caked mud and wedged rocks
are also tire hazards.
11) Reduce speed in areas where underfoot
conditions continuously change. Conditions in shovel and dump areas
change with each load. The condition
of secondary roadways is unpredictable.
Conscientious Operation by Drivers
Careful drivers avoid road obstructions that
cause cuts and impact breaks. They do not
spin drive wheels and cause excessive tread
wear.
Good drivers see that mechanical problems
are corrected promptly. This includes correct front axle alignment, correct strut settings, no loose or broken springs and no
grabbing brakes.
Good drivers regularly check for leaky
grease fittings. Oil and grease can causes
rapid deterioration of tires.
Fig. 11. Grease and oil are highly damaging to
tires.
Good drivers check rims and flanges regularly. Bent, chipped, broken or improperly
sized flanges strain the bead. Rust, oil or
grease on rim assemblies leads to rubber deterioration which will lead to a shorter
service life.
Fig. 12. A machine obstruction takes a bite out
of this tire tread at each revolution.
In addition to these general guidelines, operators should develop good work habits.
These will vary by the type of equipment
and operation.
Fig. 10.This tire was worn smooth in 500 hours
by spinning on abrasive material.
Shovel/Wheel Loader Operators
Check inflation pressures and request adjustment if needed.
Control spillage and maintain a level working pad at loading areas.
10
1) Do not overload haulage trucks.
4) Station a cleanup dozer at each loading
area. Its responsibility is to immediately
clear any spillage that does occur. It
should also help keep the area as level
as possible.
2) Properly center load in bed of truck.
This distributes the load on the wheels
correctly and reduces spillage. (Fig. 13)
Loader/Dozer Operators
1) Travel slowly between work locations.
Thick, heavy loader/dozer tires quickly
generate internal heat. This heat dissipates slowly. Excess heat can result in
tread separation.
2) Use ballast at recommended fill levels
where recommended (See page 68 for
additional discussion).
Fig. 13. Correct truck payload positioning.
3) In load and carry operations, do not exceed tire’s Work Capability Factor
(WCF) (See page 65 for additional discussion).
4) Avoid tire spin. Use hydraulics to crowd
into the bank or pile.
5) Use bucket to clear a path or level the
surface. This will provide smooth, clean
footing for the dozer and other vehicles.
Fig. 13a. Incorrect truck payload positioning
3) Properly mate dragline, shovel or wheel
loader to trucks being loaded. Excessive
spillage is caused when loading equipment is too large for the truck (Fig.
13b). Loading different size trucks with
the same shovel almost always creates
spillage.
6) Bucket should be wider than the outside-to-outside width of tires on front
axle. This will prevent or minimize
damage to the sidewalls. Loader wings
should be added to help prevent tire
damage.
Grader Operators
1) Patrol haulroads and clean up spillage.
Main roads where haulage speeds are
highest should get the most attention.
Two graders should work roads where
haulage vehicles are wider than a single
grader blade.
2) Don’t leave high windrows. They can
cause damage to haulage truck tires.
Tandem patrols help to reduce grader
created windrows.
Fig. 13b. Loading equipment too large for truck.
11
3) Create and maintain road crown to provide proper drainage.
5) Check for and remove any rocks lodged
between vehicle frame and between
rear duals.
4) Fill depressions and dips in the road.
This will eliminate excessive tire deflection on high speed haulage vehicles.
Tire Department Responsibilities
The most important item in a tire maintenance program is a sound, regular inflation
maintenance program.
Watertruck or Wagon Operators
Limit watering to control dust.
Inflation supports and carries the load. Inflation must be maintained as specified for
the load and service condition.
1) Do not overwater haulroads or work
areas. This can lead to unnecessary cuts
in tire treads and sidewalls.
Tires are designed and built to deflect in
service.
• Water acts as a lubricant for rubber.
• Wet rubber cuts more easily than dry
rubber.
Inflation pressures are established to assure
tires deflect properly. The pressures required vary with the load, speed and type
of service. When inflation pressure is too
high or too low, the tire does not deflect
within design limits. Tires deteriorate
quickly under these conditions.
2) Some watering benefits grading operations.
3) Excessive watering of hard packed,
smooth surfaces is a safety hazard. Vehicle control/safety is reduced on a
slick, wet road surface.
Scraper Operators
Generally, low speed off-the-road operations allow heavier loads at a given inflation. At high speeds, loads must be
decreased.
1) Avoid tire spinning during loading. If a
scraper is not designed for self-loading,
wait to be push loaded.
Recommended loads and inflations should
always be the norm.
Overinflation
2) Dead stick loading minimizes tire spin.
It is essential where ripped rock or
rock/earth material is being loaded.
Overinflation results in high cord stress
even when the tire isn’t overloaded. Stress
reduces resistance to loss of inflation from
impacts. It also increases the risk of rock
cutting. The problem is made worse by
poorly maintained haulroads or spillage.
3) Avoid sharp turns.
Never make sharp turns while being push
loaded.
Figures 14 and 15 show typical overinflation damage.
Rear tires can be cut and destroyed by the
blade of a push dozer. Use a straight not a
curved blade on the push dozer.
4) Dump and spread slowly. Whenever
possible, avoid driving over rocks in the
fill or dump areas.
12
In soft soil, the tire makes an impression.
The impression cradles the tire and reduces
excess deflection. Inflation can be reduced.
Tires operated on hard surfaces do not receive this support. They have to control
deflection by inflation pressure. Higher
pressures are required.
Indirect, but important, advantages of
lower inflation pressures include:
• Better flotation.
• Better traction.
• Better resistance to cutting and impact breaks.
Fig. 14.This break resulted from a severe blow
while overinflated.
Fig. 16.
Fig. 17.
Fig. 15. Rapid air loss like this occurs
frequently when tires are overinflated and
suffer an impact.
Loose or broken cords can result from severe underinflation.
Underinflation
Radial cracks indicate continuous underinflation and/or overload operation. (Fig. 17)
An underinflated tire will deflect too much
leading to excessive sidewall flexing.
Continuous operation results in heat
buildup in a tire. The hot air expands as a
result of the increase in temperature. The
tire’s carcass restricts this expansion so pressure increases.
Underinflation typically results in:
•
•
•
•
Irregular or uneven tread wear.
Sidewall radial cracks.
Ply separation.
Loose or broken cords inside the
tire.
• Fabric carcass fatigue. (Fig. 16)
• Belt edge separation
In normal off-the-road operation this does
not cause deterioration. The pressure becomes stabilized when internal heating is
balanced by external cooling.
Tires operated in soft soil or sand have
lower inflation recommendations. Tires operated on paved or hard gravel surfaces
have higher inflation recommendations.
13
Incorrect Inflation
NOTICE
Underinflation results in irreversible damage such as:
Don’t bleed hot OTR tires to correct buildup
of air pressure.
1) Carcass fatigue.
Bleeding air pressure will result in dangerous underinflation. As the tire cools at the
end of the day, inflation pressure will drop.
The tire will be seriously underinflated at
the start of the next shift or day.
2) Tubeless liner failure.
3) Tread, ply or bead area separation.
Overinflation can be as serious as underinflation:
Even if the tire is operated through the
night, underinflation will occur. Cooler
night air will cause the tire to run cooler.
Inflation pressure will drop. The tire will
suffer excessive deflection and flexing.
Damage is inevitable.
1) Overinflation overstresses the tire carcass.
2) It reduces the tire’s ability to envelope
irregular objects in the travel path.
3) It causes a loss of traction.
Bleeding tire pressure actually begins a vicious cycle. Reduced pressure causes increased deflection and flexing. These
generate heat. Pressure builds up again.
The tire is bled to reduce pressure and the
cycle repeats. It continues until a complete
tire breakdown results.
4) It makes tires more vulnerable to spin
cuts and shock load damage.
5) It reduces flotation in soft ground.
6) It produces a hard ride and vehicle vibration. This contributes to:
• Payload spillage.
• Poor vehicle handling.
• Operator fatigue.
Proper attention to tire inflation, loads and
speeds is the best prevention of tire related
problems. These factors need especially
careful attention in hot weather.
Proper Tire Inflation Procedures
Correct air pressure only when tires are at
ambient temperatures.
Recommended inflation pressures are always
based on a cold reading. A cold tire is one:
Correct Tire Inflation:
1) That has been idle at least 24 hours.
1) Assures load carrying ability.
2) Has reached ambient temperatures.
2) Avoids damage due to run-low or runflat operation. Carcass fatigue, (tubeless) liner failure and radial cracks are
the most common signs of damage.
Proper inflation for each wheel position
should be determined. Ideally, this is based
on actual tire loads determined by an on
site weight study.
3) Reduces tread separation due to overdeflection.
When actual wheel loads aren’t known,
tires should be inflated to the pressure recommended for the size and ply rating.
4) Reduces impact breaks, bruise damage,
tread cuts and penetration.
When checking cold inflation pressures the
correct pressure is:
5) Reduces irregular and rapid tread wear.
Cold pressure + 5 PSI (+.25 Bar), - 0 PSI.
14
Inflation pressure recommendations vary
with the type of service. The type of service also determines the operating speeds:
• Press the valve core briefly and release a small quantity of air.
This cleaning procedure will help assure an
accurate reading and prevent damage to
the gauge.
• Haulage units (earthmoving, mining, logging, etc.): 30 MPH/50 KPH
maximum speed.
• Dozer/loader units (shovels, mining
cars, loaders, etc.): 5 MPH/10 KPH
maximum speed.
• Road graders: 25 MPH/40 KPH
maximum speed.
6) Use a valve cap on every valve. It acts as
the primary air seal. It also helps to prevent dirt, dust and water damage to the
core.
Special service conditions also impose
speed limits based on tire load and construction. These special applications include compactor, sand, straddle carriers,
driveaway and intermittent highway use.
Load and inflation tables for all types of
service are in the back of this book.
Essential Parts of a Sound Inflation
Maintenance Program
7) Check spuds, stems and extensions. Be
sure all joints are tight and secure to
avoid leaks in service.
1) Cold inflation checks and adjustments
should be made once a week. Hot
checks should be made daily.
8) Use valve extensions or hosing for easy
access for inflation checks.
9) Compressors:
2) Never bleed air from a hot tire to correct pressure. Normal equipment operation causes inflation pressure to
increase. A hot pressure increase up to
20% is acceptable.
• Must have a minimum, capacity of
150 PSI (10.0 Bar).
• Compressors must have water trap
assemblies to prevent moisture inside tires.
• Moisture can:
If excessive pressure is present, find and
fix the cause. Bleeding air will result in
serious underinflation and tire damage.
– rust rim parts.
– plug valve stems with rust from
rims or ice crystals.
– reduce pressure gauge life and
accuracy.
– complicate dismounting procedures.
3) Record inflation pressure every time it
is checked. Records provide information that can be used to detect problems
and schedule preventive maintenance.
4) Accurate pressure gauges must be used.
Service gauges must be calibrated with
a master gauge once a week.
5) Before placing pressure gauge on valve:
10) Use a new, correctly sized O-ring each
time a tire is changed. Use a new
grommet on tubeless spuds.
• Clean any dust, dirt, grease or other
matter from tip of valve stem.
11) Thoroughly clean rims and rim parts
before mounting tires. Wire brush:
15
•
•
•
•
bead seat areas.
flanges.
O-ring and lock-ring grooves.
lock ring.
This average difference should be added to
the recommended inflation pressure for
tires in constant operation.
A tire that shows a significant variation
from the average pressure could have a
problem. The vehicle should be stood
down until the cause can be determined.
Bare metal must be painted or coated
with rust inhibitor.
If necessary, sandblast components to
bare metal and paint with rust preventative paint.
N O TE : Cold inflation checks should be
done at every opportunity. These include
holiday and weekend shutdowns or regular
vehicle maintenance periods.
Clean components are easier to mount.
They also allow a more thorough inspection for stress cracks, broken welds
and other damage.
Matching of Duals
Tire assemblies operated as a dual pair must:
12) Store rim components in a dry area to
prevent rust and corrosion.
• Have the same outside diameter
(Within variation listed below).
• Be from the same manufacturer.
• Be of the same type (industry code).
• Be of the same construction (both
bias or both radials).
• Separate components for storage
(don’t store assembled rims).
• Be sure components are properly
matched before mounting tires.
13) The use of nitrogen inflation is recommended (See page 24).
Bias and radial constructions must never be
mixed on dual assemblies.
• It reduces rim corrosion.
• It reduces the risk of auto-ignition
(tire explosion) from an external
heat source. These include: vehicle
fires, hot brakes or lightening strikes.
Tires on dual assemblies must match in size.
If they do not, they will not carry equal
shares of the load. The larger tire will carry
a greater load. It will wear faster than its
smaller partner. It will also suffer greater
stress which makes it vulnerable to damage.
To be effective, nitrogen must be used
for all maintenance refills.
The smaller tire will also suffer irregular
scuff wear. This will lead to early replacement.
Hot Inflation Checks
When vehicles operate around the clock,
cold inflation checks may not be possible.
In addition to fast wear, mismatching may
result in axle breaks and difficult steering.
A hot tire correction factor can be determined by experiment:
Maximum diameter variation for duals
should be:
• Check as many tires as possible
when cold.
• Check the same tires after four hours
of normal operation.
• Determine the average difference in
cold and hot inflation pressure.
O . D . D i ff e r e n c e
Ti re Si ze
(I n c h e s/ M M )
Through 8.25-20
0.25 Inch/7 mm.
9.00-20 through 21.00-35
0.5 Inch/13 mm.
24.00-35 through 33.00-51 0.75 Inch/19 mm.
36.00-51 and larger
1.00 Inch/25 mm.
16
Circumferential measurement is a more accurate guide for larger tires. The circumference is measured with a steel tape. For
accuracy, tires must be measured mounted
on rims and inflated.
Tire and Rim Association
(T&RA)
European Tire and Rim
Technical Organization
(ETRTO)
This is an organization of technical
representatives from all tire and rim
equipment manufacturers. Its purpose
is to set industry standards/guidelines.
Located in Brussels, Belgium, this
group is very similar to the T&RA. It
too sets standards and issues recommendations followed by industry suppliers. This results in common
dimensional measurements and
load/inflation relationships beneficial
to equipment users.
Its work has prevented chaos in the
sizes and types of equipment available.
This makes rims, tubes, valves and
other components widely interchangeable. It also gives equipment operators
easy access to replacement parts and
service.
ETRTO data are expressed in metric
units. T&RA data are expressed in
English and metric units. They are not
necessarily identical.
The Association also establishes load
and inflation recommendations. These
are used by equipment manufacturers
in the design of their machines.
ETRTO data are not formula conversions of English units. They are independent recommendations. They are
based on engineering principles and
field experience of the group’s members. When available, ETRTO data are
included in the load/inflation tables in
this book. However, ETRTO standards
do not exist for all sizes. Where a size is
not covered, SI (System International)
conversion formulas are used.
The T&RA yearbook contains many
references to load and inflation tables.
These recommendations are based on
the best engineering principles. They
have been refined over years of actual
field experience. Importantly, they are
based on information gathered from
the entire industry, not a single manufacturer.
Japan Automobile Tyre Manufacturers Association
(JATMA)
Located in Tokyo Japan this association is similar to T&RA AND ETRTO. It sets
standards and issues recommendations that are followed by type and rim manufacturers. This results in common dimensional measurements and load/inflation relationships which benefit equipment manufacturers and end users. JATMA data is
expressed in metric units. due to calculations and rounding the dimensions, loads
and inflations of T&RA, ETRTO and JATMA may not be identical but are close.
Use the standards/guidelines from the organization from your region of the world.
17
How To Calculate Loads and Load Distribution
1) Empty weight per axle.
2) Weight of payload (estimated if necessary).
3) Measurements shown in Fig. 19.
In our formula:
A = Distance from front axle to center of
payload in inches.
B = Distance from rear axle to center of
payload in inches.
C = Wheelbase in inches.
F = Empty weight on front axle.
R = Empty weight on rear axle.
With this information, the load on each
axle can be determined.
Load on = (A/C X payload) + R
rear axle
Load on = (B/C X payload) + F
front axle
For example, if:
A = 108”
B = 132”
C = 240”
F = 10,000 #
R = 8,000 #
Payload = 36,000#
Fig. 18. Scales set and ready for use.
The best method is to weigh the loaded
machine one axle at a time.
When this is impractical, tire load can be
estimated with the following formulas.
They take into account vehicle designs
that result in uneven load distribution on
the axles.
then Rear Axle Load =
(A/C
X Payload +
R =
(108/240 X 36,000) + 8,000 =
( .45 X 36,000) + 8,000 =
16,200
+ 8,000 = 24,200
To use the formulas, you need to know:
Fig. 19. Center of Load.
18
and Front Axle Load =
(B/C
X Payload
(132/240 X 36,000)
( .55 X 36,000)
19,800
+
+
+
+
These percentages give us a ratio:
F=
10,000 =
10,000 =
10,000 = 29,800
45:55 = 100.
This is important because it applies to any
load in that vehicle. Thus, it allows us
quickly to calculate the effects of lighter or
heavier loads.
Our example also shows that the part of the
load on each axle is a percentage of the
wheelbase.
Load Distribution on Other Types of
Carriers
In our example, the distance from the center of the payload to the front axle is 45%
of the wheelbase:
The formula may be applied to all types of
wheeled machines. Some slight changes in
description may be needed, however.
108/240 = .45 = 45%
For example, in a tractor/trailer combination:
This is the percentage of the load carried
by the rear axle.
The wheelbase is the distance from the
pivot point to the rear axle.
The distance from the center of the payload to the rear axle is 55% of the wheelbase:
To determine the weight distribution on
the tractor:
132/240 = .55 = 55%
The pivot point is the center of the load.
This is the percentage of the load carried
by the front axle.
The load on the pivot point is the total
payload on the tractor.
Burned Beads
The machine should be parked outside, remote from all personnel.
WARNING
Burned beads are very dangerous. They can
cause a sudden loss of air that can lead to
death, serious injury or property damage.
These have been reported more than an
hour after a vehicle was parked.
DO NOT STAND NEAR A TIRE AND RIM ASSEMBLY WITH A HOT BRAKE.
Burned beads are usually caused by brake
problems. Excessive braking or dragging
brakes are the most common source.
Another risk is a loss of inflation long after the
machine is parked. When the machine is shut
down, cooling air does not circulate. The hot
brake quickly transfers heat to the rim base.
Air pressure builds and the bead becomes
hot and weak. Eventually, an explosive,
potentially dangerous rupture may occurs.
Excessive braking can result in temperatures up to 500º F (246º C). This heat is
transmitted through the brake drum to the
rim. The rim heats the inside bead and
burns it.
Temperature above 250º F (123º C) may
reduces bead durability.
The air in an earthmover tire has extremely
high energy when released suddenly. Since
burned beads can lead to a sudden rupture,
extreme caution must be exercised.
Burned beads can cause several kinds of tire
failure.
19
The most common is a reduction in compressive fit between bead and rim. This
causes a leak. If it does not produce a flat
tire, it will result in underinflation. An underinflated tire will generate more heat.
This will lead to ply separation and a loss of
strength. Rapid air loss will occur. This
most likely will be in the bead or lower
sidewall.
After the brake has cooled, the tire can be
replaced.
Modern equipment design has made brake
overheating rare.
Engine retarders are common. These slow
the equipment without excessive braking.
Proper training will assure that operators
use this feature effectively.
Air wicking through the carcass is another
problem bead condition. This causes pressure to build up within the carcass and a
separation of tire components.
Some machines use wheel coolants. These
transfer heat from the bead area. Coolant
must be checked regularly and maintained
at proper levels.
Most burned bead problems occur with
new equipment or new operators. Proper
training and a conscious effort to avoid excessive braking can prevent most problems.
Fig. 20. Toe has been burned and chaffed due
to burned bead.
Fig. 22. Heal damage due to burned bead.
Fig. 21. Rupture resulted from burned bead.
20
Repairs
Both tube-type and tubeless tires can be repaired. Regular inspection can detect repairable injuries before they become
serious. Immediate attention may prevent
extensive or costly damage.
Clean out cuts with an awl to remove any
lodged in or embedded material. Use a
sharp, small blade knife to cut a coneshaped cavity. The cavity should extend to
the bottom of the injury. Sides of the cavity should slant enough to prevent stones
from wedging. Tires with cuts treated in
this manner may continue in service and
cut growth should be reduced.
Tread and sidewall cuts are a major source
of off-the-road tire trouble. Tires should be
checked at the start of each shift and during regular inflation checks. Cuts which
extend to or into the belts or cord body
must be repaired. The tire must be taken
off for repair.
All small cuts should be repaired when tires
are removed for major cut repairs. Tires
with very high hours (greater than 10,000)
are not good repair candidates.
Shallow cuts in the tread can be treated
without dismounting tires. Small rocks and
dirt will get into these shallow cuts. If neglected, the rocks will gradually be pounded
or drilled through the cord body.
Tire repair may be possible, but may not be
economical in older tires. The cost of the
repair must be justified by the remaining
service life.
Fig. 23 Deep tread rock cut – If left unattended
will cause cut separation or cut through.
Fig 24. Deep tread rock cut – If left unattended
will cause tread rock cut separation.
Fig. 25. Skiving reveals close-up of rock cut
damage into working belt.
21
Recapping/Retreading
Both tube-type and tubeless tires can be recapped.
life out of the carcass. Retreading should
not be considered for tires operated:
Recapped tubeless earthmover tires do not
require a tube to return to service.
• At high speeds.
• Overloaded.
• Underinflated.
A good tire maintenance program will result in tire cost savings. It will also improve
tire retreadability for future savings.
Tires with very high hours (greater than
10,000) should not be retreaded.
Some service conditions take too much
The best recapping candidates are tires
which had fast tread wear. This occurs at
sites with steep grades or abrasive surfaces.
Handling and Storage of Tires, Tubes and Rims
Store O-ring seals in a cool, dry place.
Proper handling and storage will prevent
damage to tubeless tires.
Lay flat. Do not stack other materials on
O-rings.
Unmounted tires should be shipped and
stored vertically. Horizontal storage may
compress the beads. This may make initial
inflation difficult.
Store valves in a clean, cool, dry place.
Tire and Tube Storage
Some new tires are shipped banded to preserve their shape. Do not remove bands
until tires are ready to mount.
Tires and tubes deteriorate rapidly if improperly stored.
Improper storage conditions include:
Do not lift tires by the beads. Sharp hooks
or forks cut and tear beads. In service, beads
may leak at these lifting points.
•
•
•
•
•
•
•
Foreign material and moisture must be removed from the inside of the tire before
mounting.
Rims
Direct sunlight.
Heat.
Air in motion.
Ozone.
Gasoline and oil.
Dust and dirt.
Water or moisture inside tires.
Even short term storage should avoid exposure to these conditions.
Tubeless rims are an important part of the
air seal in a mounted tire. Do not distort or
mutilate rim parts.
Never lift rims by valve holes.
Storage time should be minimized by using
tires in the order received.
Never drop, tumble or roll rim parts.
New Tires
Use babbit or lead hammers sparingly during assembly. Sledge hammers can damage
rim parts.
1) Store indoors in a cool, dark, dry, draft
free area. If tires must be stored outdoors, they should be covered. An
opaque, waterproof tarpaulin is a good
22
Mounted Tires
cover. Water and moisture must be kept
out of the tire.
1) If tires are stored on a machine, it
should be blocked up. Air should be released to 10 psi (.7 bar) or less. If machine cannot be blocked up, check air
pressure frequently. Maintain pressure
at proper level.
If possible, mount on wheels and inflate
to 10% of operating pressure. Store vertically. Cover with a tarpaulin.
2) Store away from electrical devices such
as motors and switches. These are a
source of ozone.
2) Protect each tire with an opaque, waterproof cover.
3) Do not store in rooms with or near
gasoline or lubricants. Rubber absorbs
vapors from these materials and they
can cause deterioration.
3) Machines resting on tires should be
moved once a month. This prevents deflection strain on only one part of the
tire.
4) Provide carbon dioxide fire extinguishers in tire storage areas.
4) Do not use paint to preserve tires. If severe storage conditions are expected,
consult tire supplier for recommendations.
Used Tires
1) Carefully clean and inspect tires before
storage. Make necessary repairs before
storage. Repairs to injuries which expose tire cord are especially important.
Moisture can get into exposed cord.
Tubes
1) Store in original package until ready for
use. Keep in a cool, dry, draft free area.
2) Used tubes must be removed from the
tire. They must be completely deflated,
cleaned and folded. Store in a cool, dry,
draft free area.
2) Observe all storage rules listed for new
tires.
23
SECTION II
Procedure for Changing
Tires and Tubes
Changing Off-The-Road Tires
Replacement of off-the-road tires is a difficult job. They are often located in rough,
hilly terrain. Most are used in remote geographical locations. Site conditions are
usually far from ideal. Proper equipment
may not be available.
The procedures in this section describe
changing larger size tires. Both ideal and
difficult conditions are covered.
The procedures are based on both field and
shop experience. They are designed to
make the change as easy as possible.
Nitrogen Inflation
• An appropriate relief valve.
• A pressure regulator set for no more
than 20 PSI (1.5 Bar) over desired inflation.
• A remote control clip-on chuck. This
allows personnel to stand clear of
tire/rim assembly during inflation.
Many original equipment manufacturers
recommend nitrogen inflation. It helps to
minimize the possibility of explosion due to
excessive heat from external sources.
Typical sources are:
•
•
•
•
•
Vehicle fires.
Excessive braking.
Dragging brakes.
Welding on rims of mounted tires.
Lightening strikes.
Proper inflation pressure for tires inflated
with nitrogen is the same as for air.
Nitrogen tanks are pressurized to 2200 PSI
(152 Bar).
All these can cause the inside of the tire to
ignite and burn.
Correct equipment must be used and proper
safety precautions taken. Otherwise, an explosion or blowout of the tire/rim assembly
could result. This can cause death, serious
personal injury and property damage.
WARNING
An explosion caused by tire auto-ignition is
much more violent than other sudden air
loss situations.
There are several other benefits to nitrogen
inflation:
Serious injuries and death can result from
such explosions.
• It offers improved pressure retention
• It minimizes rim rust.
Never weld on a rim of a mounted tire.
Inflating with nitrogen should be done only
by trained personnel using proper equipment. This includes:
24
Tire Changing Equipment and Tools
Tire changing procedures vary with individual operators. Certain tools, however,
are essential.
6) Service truck. In larger operations, a
fully equipped truck can minimize
down time. The truck should be
equipped with:
1) Heavy equipment jack.
• A mounted hoist. The hoist should
be strong enough to handle the
largest tires.
• An air compressor with a regulator.
Models are available which operate
off the truck engine or are self powered.
• Large bore/super large bore inflating
equipment. This minimizes inflation
time.
• Clip-on chucks with remote controls. These allow inflation from a
safe distance.
2) Tire tools and irons. These include:
• Several irons with dished or spoon
shaped ends.
• Crowbar.
• Heavy duty rubber or wood mallet or
lead or babbit hammer.
3) Wheel chucks.
4) Jack stands
5) Air compressor.
25
Be f o r e p e r f o r m i n g an y s e r v i c e o n Of f - T h e - R o a d t i r e s ,
r ea d a n d u n d e r s t an d a l l s a fe t y p r e c au t i o n s . D o n o t
m o u n t o r d em o u n t t i r e s w it h o u t p r o p er t r ai n i n g .
GENERAL SAFETY INSTRUCTIONS
The following section of this Manual contains important safety information, including
steps necessary to avoid accidents that may result in death, serious injury or property damage. Follow all procedures and safety instructions exactly. Wear proper personal protective
equipment (PPE).
DEMOUNTING
PRECAUTION
REASON FOR PRECAUTION
Befo re rem ov in g an y rim o r wh eel c om p o n e n t ( i. e . , n u t s o r r i m c l a m p s ) :
A broken rim part under pressure can blow
apart and cause fatal injury. If you remove
lugs while tire is under pressure, the assembly may fly apart.
• E xh a u s t a l l a i r f r om a s i n g l e t i r e .
• E xha ust all air fro m bo th tires o f a
d ual asse mbly.
Remove valve core completely. This will
a s s u r e a l l a i r i s e x h a u s t e d fr o m t i r e .
Foreign material may clog the valve stem
during deflation.
• R e m ov e bo t h c or e s f r om du a l a s sem bly.
• R u n a pi e c e o f w i r e t h r o ug h s t e m
to b e sure it’s n ot p lu gg ed .
Ice may form as the air leaves the tire. This
can clog the valve stem.
A l w a y s s t a n d c l e a r d u r i n g d e f la t io n .
If the assembly bursts, the operator should
be far away from the explosive force.
Us e a pp r ov e d e y e p r ot e c t i on .
Protect eyes from dust and dirt when exhausting air from tires.
26
U s e m ec h a n i c a l a i d s w h en r e mo v i n g
h e a v y r i m c o mp on e n t s .
This will help protect you from injury.
A dropped flange can crush a hand or foot.
Attempting to grab a falling flange or bead
seat can cause serious injury.
If tool slips, it can fly with enough force to
cause severe injury or death. Keep fingers
clear. Always stand to one side when you
apply pressure.
Demou ntin g tools ap ply high pressu re to
r i m f la n g e s w h e n u n s e a t i n g t ir e b e a d s .
INSPECTION
PRECAUTION
REASON FOR PRECAUTION
C l ea n a n d r e p ai n t r i m s . T h i s w i l l s t o p
c o r r o s i o n. I t w i l l a l s o m a k e i t e a s i e r t o
mo un t a n d c h e c k c o mp on e n t s .
Parts must be clean for proper fit. This is
especially true of the gutter section which
holds lock ring in position.
Cl e an d i r t an d r u s t f r o m l o ck r i n g an d
gu tter.
This is important to seat the lock ring
properly.
A ir i n f la t i o n e q u ip m e n t s h o u l d h a v e a
f i l t e r i n t h e a i r l i n e . F i l t e r m u s t be
ch ec ke d frequ en tly to see th a t it work s
p ro p erly.
This will prevent moisture from entering
the tire and prevent corrosion.
C h e c k r i m c o mp on e n t s f o r c r a c k s
Parts that are cracked, damaged or excessively rusted are weakened. Bent or
repaired parts may not engage properly.
R e p l a c e a l l c o m p o n e n t s w h ic h a r e :
•
•
•
•
C r a c ke d
B a d l y w or n
D a mag ed
S ev erely ru ste d
U s e n e w c o m p o n en t o f s a m e s i z e a n d
t y p e . R e p l a c e m e n t p a r t s mu s t n o t be
c r a c ke d, br o ke n o r d a m a g e d.
This allows for proper fit and function.
27
N e ve r, u n d e r an y c irc u m sta n c e s, at t e m p t t o r e w o r k , w e l d , h e a t , or b r a z e
a n y r i m c om p o n e n t s t h a t a r e c r a c k e d ,
b ro k en o r dam age d.
Heating may weaken a part. It may then be
unable to withstand forces of inflation or
operation. This can lead to an incident resulting in serious injury or death.
R e p l a c e w i t h pa r t s t h a t a r e n o t c r a c ke d,
b ro k en o r da mag ed . A lways u se pa rts o f
th e same size a nd ty pe .
B e s u r e c o r r e c t p a r t s a r e be i n g a s s e m b le d .
Mismatched parts may appear to fit. When
the tire is inflated they can fly apart with
explosive force. This may lead to serious injury or death.
Ch eck th e pa rts’ d istrib utor o r m anu fac t ur e r i f y o u h a ve a n y do ub t s .
D o no t b e c a r e l e s s o r t a k e c h a n c e s .
I f y o u a r e n o t s u r e a b o u t p r o p e r m a t i ng
o f r i m a n d w h e el p ar t s , co n s u l t a n e x p er t .
This may be the tire man who services your
fleet. It may be your wheel distributor.
D o n ’ t r e i n f l a t e a t ir e t h a t h a s b e e n r u n
f l a t un t i l y o u i n s pe c t :
Components can be damaged or dislocated
when a tire is run flat or seriously underinflated. This can lead to an incident resulting in death or serious injury.
•
•
•
•
Tire
Tub e
F la p
R i m an d w h ee l a s s emb l y
D o ub l e c h e c k :
•
•
•
•
F la n g e ( s )
B ea d s ea t
L o c k r i ng
O- r i n g
Be su re th ey are se cu re in th e gutte r be f o r e i n f la t io n .
S t a n d c l e a r o f t h e t i r e w h i le i n f la t i n g .
28
MOUNTING AND INFLATION
PRECAUTION
REASON FOR PRECAUTION
Do n ’t h amm er be ad sea t ring s o r o the r
c o mp o n e n ts wh il e tire is in fla te d . Yo u
may tap the lock ring when in flatio n b egins with a rub ber or sho t h amme r to in s ur e i t i s p r op e r l y s e a t e d .
If parts are improperly installed they may
fly apart with explosive force.
D o u b l e c he c k t o b e s u r e a l l c o m p o n e n t s
a r e p r o p e r l y s e a t e d b e f o r e i n f l a t i ng .
If parts are improperly installed they may
fly apart with explosive force.
Inflate in a safety cage. Use safety chains
o r e q u iv a l e n t r e s t r a i n i n g d e v i c e s d u r i n g
i nf l a t i o n.
Parts can fly apart with explosive force during inflation.
Do n’t in fla te tire be fo re all co mp on en ts
a r e p r op e r l y i n p l a c e .
P l a c e i n s a f e t y c a g e or u s e c h a i n s l i n g
a n d i n f l a t e t o a p p r o x i ma t e l y 5 P S I ( . 5
B a r ) . R e c h e ck c o mp o n e n t s f o r p r o p e r
asse mbly.
I f a s s e m b l y i s n o t p r o p e r a t a p p r o xi ma tely 5 P SI ( .5 Bar) c om pletely de fla te
t i r e ( b o t h t u b e - t y p e a n d t ub e l e s s ) a n d
start ov er.
I n f l a t i o n t o r e c o m me n d e d o p e r a t i n g
p re ssure sh ou ld b e do ne o n th e v eh ic le.
N e v e r h a m m e r o n a f u l ly o r p a r t i a l l y i n flated tire/rim asse mb ly.
Properly matched and assembled components will seat without tapping. If a part is
tapped, it or the tool can fly out with explosive force.
N e v e r s i t o r s t a n d i n fr o n t o f a t i r e a n d
r i m a s s e m b l y t h a t i s b e i n g i nf l a t e d .
Parts can fly apart with explosive force.
U s e a c l i p - o n c h u c k. Us e i n f l a t i on h os e
lo ng e no u g h t o s ta n d t o s id e o f ti re .
D o no t st a nd in f ro n t o r b a c k o f t ire
a ssem b ly.
29
F o l l o w t i r e a nd r i m m a n u f a c t u r e r s ’ r e c o mme nd ed p roc ed ure s fo r:
•
•
•
•
Failure to do so can result in death or serious injury.
M o u n t in g
D e m o u n t i ng
I n f la t in g
D e fl a t in g
D on ’ t h a m m e r o n r i m s o r c om p o n e n t s
w i t h s t ee l h am mer s .
Steel hammers may damage components
and cause improper fit.
I f n ec e s s ar y t o t a p u n i n f l at ed c o m p o ne nts togethe r, use mallets with faces of:
•
•
•
•
R u bb e r
L ead
P l as t i c
B r as s
S t a n d c l e a r w he n u s i n g a s t e e l c a b l e o r
c h a i n s li n g .
The cable or chain may break. If it does it
can lash out and cause serious injury.
Ne ve r we ld on a tire /rim a ssemb ly.
Heat from welding will cause a sudden rise
in pressure. This may result in a powerful
explosion.
Deflated tires also can catch fire inside the
chamber. Pressure will build up. An explosion may occur.
Mixin g p arts of o n e typ e rim with th o se
o f a n o t h e r i s p o t e n t i a l ly d a n g e r o u s .
Mismatched parts may appear to fit. When
the tire is inflated they can fly apart with
explosive force.
A l w a y s c h e c k D O T c h a r t or m a n u f a c t ur e r f o r a pp r ov a l .
30
N e v e r i n t r o d u c e a fl a m m a b l e s u b s t a n c e
into a tire b efo re, d uring o r after m oun ti ng .
This is unsafe and could result in:
•
•
•
•
Fire
Internal tire damage
Rim damage
Potentially dangerous vapors.
Any of these conditions can cause death or
serious personal injury during mounting
and inflation.
OPERATION
PRECAUTION
REASON FOR PRECAUTION
D o n ’ t u s e u n d e r s iz e d r i m s .
Excessive overload can cause damage to
the tire and rim assembly.
U s e r e co m m e n d ed r i m f o r t i r e . C h e ck
G o o d y e a r c a t a l o g s f or p r o pe r t i r e / r i m
m a t c h in g .
D o n ’t o v e r l o a d o r o v e r i n f l a t e t i r e / r i m
a s s e mbl i e s .
Excessive overload due to undersized rims
can cause damage to the tire and rim assembly.
Ch ec k with yo ur tire a nd rim m an ufac ture r if spe cial o pe rating co n dition s a re
r e q ui r e d .
Nev er ru n a v ehicle on on e tire of a d ual
asse mbly.
This will exceed the carrying capacity of
the single tire and rim. Operating a vehicle in this manner can result in damage to
rim and tire.
Ne ver u se a tu be in a tub eless tire whe re
t h e r im a s s e m b l y i s s u s p e c t e d o f le a k i n g .
Loss of air pressure warns you of a potential
rim failure due to fatigue cracks or other
fractures. This indicator is lost when tubes
are used with leaking rims. Continued use
may cause the rim to burst with explosive
force.
Always in sp ect rims and wheels fo r d ama g e d u r i ng t i r e c h e c k s .
Early detection of rim damage or wear may
prevent an accident.
31
N e ve r mo d i f y a r i m w i t h o u t a p p r o v a l
from th e ma n ufac tu rer.
Modification or heating of the rim or one
of its parts can weaken it. It may not withstand inflation or operation forces.
N e v e r h e a t , w e l d o r b r a z e a r im .
A l w a y s r e m o v e t he t i r e f r o m t h e r i m b e f or e s e r vi c e .
I f v e h ic le w h e e l s h a v e b e e n d e s i g n e d t o
c o n ta in wh e e l c o o la n t, n e v e r o p e ra te
v e h ic le w it h o u t c o o l a n t .
An explosion can occur when a tire is exposed to extreme temperatures from an external source. This can cause death, serious
injury or property damage. Wheel coolant
helps keep operating temperatures down. It
must be used where recommended.
A l w a y s u s e t he m i x a nd a m o u n t o f c o o l an t reco mm en de d by th e m an ufac tu rer.
Don ’t let the brak es become o verheated.
An explosion can occur when a tire is exposed to extreme temperatures from external sources. This can cause death, serious
personal injury or property damage.
Av o id ab use s th at ca n ov erh eat b rak es.
T h e s e i n c l ud e :
•
•
•
•
D r a g g i n g of br a ke s
S p e e d in g
P o o r b r a k e a d j u s t m e nt
Ov e r l o a di n g
C l e a r t h e a r e a i f e xc e s s i ve b r a k e h e a t i s
susp ec ted. Warn ing s in clu de:
The risk of explosion is greatest soon after
the vehicle is stopped.
• T h e s m e ll o f b u r n in g r u b b e r
• T h e s m e ll o f h o t b r a k e s
Wait at least o ne ho ur b efore a pp roa ch i ng m a c hi n e .
Ca refully follo w m an ufa ctu rer’s rec om m e nd a t i o ns f o r :
•
•
•
•
O p e r a t in g p r a c t i c e s
Us e of r e t a r d e r s
B r ak es
B r a k e m a in t e n a n c e
32
SERVICING TIRE AND RIM ON MACHINE
PRECAUTION
REASON FOR PRECAUTION
B l oc k t i r e a n d w h e e l o n op p os i t e s i d e o f
mac hine before placing jac k in p ositio n.
Machine may shift and slip off jack. This
can cause death or serious injury.
P ut h a r dw o o d b l oc k s un de r j a c k.
Machine may shift and slip off jack. This
can cause death or serious injury.
U s e b l o c k s r e g ar d l e s s o f h o w h a r d o r
f i r m g r ou n d a p pe a r s t o be .
Al w a y s c r i b up a ve h i c l e w i t h b l oc k s o r
a j ac k s t an d
Befo re lo ose nin g nu ts o r c la mp s, alwa ys
s e c ur e a t i r e / r i m a s s e m bl y w i t h :
Unsecured assemblies may fall when
fasteners are removed.
• A s l i ng
• Tire h an d ler
• Ot h e r s u pp or t e q ui p me n t
C o n s u l t v e h i c l e m an u f ac t u r er f o r d e t a i l e d i n s t r u ct i o n s o n r e m o v a l o f
t i r e / r i m a s s e m bl i e s .
Don ’t hamm er to drive a tire an d rim assem bly o ver a c ast sp o ke wh ee l.
Failure to fit can indicate distorted or incorrectly assembled components.
D ef l a t e a n d e x am i n e t o d et e r m i n e t h e
rea son for im pro per fit. L oo k fo r disto rt i on or c o mp on e n t s n o t p r op e r l y l oc k e d
o r s ea t ed .
In either case, the assembly could fly apart
if hammered and cause death or serious injury.
33
D o n o t , u n d e r a n y c i r c um s t a n c e s , u s e
a n y t y p e o f h e a t s o u r ce o n a n i n f l at ed
t i r e.
Welding or other heating of an inflated
tire/rim assembly can cause an explosion.
This can cause death, serious injury or
property damage.
Welding or brazing a rim with a deflated tire
can cause damage to the tire. When reinflated, the damaged tire could also explode.
Welding or brazing a rim with no tire is
contrary to recommendations of rim manufacturers. It can cause a structural weakness in the rim. This can also lead to failure
under inflation or service conditions.
34
Demounting Procedures
B e f o re r e m o v i n g a n y r i m o r w h e e l c o m p o n e n t:
• Wear proper personal protective equipment (PPE)
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem to be sure it is not plugged.
Exhaust air from both tires of a dual assembly before working on either.
Failure to follow this procedure may lead to death or serious injury.
35
Demounting Instructions
Semi Drop-Center Rims
Th ree P iece Ty pe TG - TGD - TG F (Gra de rs)
Read safety instructions
(pages 26-35) before proceeding.
Before removing any rim or wheel component:
• Wear proper personal protective
equipment (PPE)
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem
to be sure it is not plugged.
PROCEDURE REQUIRES:
• 2 Goose-necked bead unseating
tools.
• Rubber lubricant.
• Rubber, plastic, lead or brass faced
mallet.
Exhaust air from both tires of a dual
assembly before working on either.
Photo 1
Photo 2
36
After complete deflation, place assembly
on blocks with loose flange side up. Follow
steps in order shown.
3. Stand on sidewall. Use foot to force
flange down along rim base. Pry loose
lock ring. (Photo 3)
1. Drive goose-necked end of two tools
between tire and flange. They should
be about 2-feet (70 cm) apart. (Photo
1)
4. Hold side of flange down with hooked
end of tool. Grab and remove O-ring
from O-ring groove. (Photo 4)
5. Remove side flange. (Photo 5)
2a. Pry both tools outward and sideways
through an arc of about 70º. (Photo 2)
6. Turn tire over.
7. Follow steps 1 and 2 to break tire loose
from fixed flange side of rim.
2b. Leave one tool in position and move
second about 5-inches (13 cm) beyond.
Pry down and out as above.
8. Lift rim base from tire. (Photo 6)
2c. Repeat the process until the entire
bead is unseated.
Photo 3
Photo 5
Photo 4
Photo 6
37
Demounting Instructions
Single Piece Rims
(G ra de rs a nd Sm all F ron t En d L o ade rs)
Read safety instructions
(pages 26-35) before proceeding.
Before working on tire or rim:
• Wear proper personal protective
equipment (PPE)
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem
to be sure it is not plugged.
PROCEDURE REQUIRES:
• 1 goose-neck bead unseating tool
• 3 tire irons
• Rubber lubricant
Exhaust air from both tires of a dual
assembly before working on either.
After complete deflation, place assembly
on blocks with loose flange side up. Follow
steps in order shown.
1. Stand on tire. Use goose-neck tool to
break bead from wheel flange.
2. Lubricate top tire bead and top flange
area on wheel.
3. Insert two tire irons close together
under top bead. (Photo 1)
4. Hold one tire iron down in original position. Hold firmly so it does not fly up
and strike you.
Photo 1
Photo 2
38
5. Work 2nd tire iron around wheel until
bead is completely demounted. (Photo
2)
8. Position 2nd tire iron 12” to right of
first iron.(Photo 4) Force spoon under
bead and over wheel flange.
• Use standing weight to help push
bead into wheel well.
9. Rotate 2nd tire iron 90º. (Photo 5)
Lift 2nd tire iron straight up.
6. Stand tire/wheel assembly up.
10. Hold 1st and 2nd tire irons in one hand
so they form a triangle. Position 3rd tire
iron 12” to left of first iron. Rotate 3rd
tire iron 90º to wheel. (Photo 6) Lift
3rd tire iron straight up.
• Break bead from second wheel
flange.
• Lubricate near tire bead and back
flange area on wheel.
• Pull top of wheel out of tire as far as
possible. Use foot on bottom of
wheel to hold in cocked position.
Tire bead should be in wheel well.
11. Once bead is over flange, finish demounting with one tire iron.
7. Force spoon of tire iron between bead
and wheel flange. (Photo 3) Raise tire
iron until it is straight up. Hold in position.
39
Horizontal Demounting 25” - 49” Diameter Rims
Read safety instructions
(pages 26-35) before proceeding.
After complete deflation, place assembly
on blocks with gutter side up. Follow steps
in order shown.
PROCEDURE REQUIRES:
1. Force pry bars under lock ring from opposite sides. They should be separated
by about 10-inches. Push bars in opposite directions to pry lock ring out.
(Photo1)
• Hydraulic demounting tool
• 2 pry bars
Before removing any rim or wheel component:
NOTE: If lock ring cannot be removed,
unseat bead with lock ring and O-ring
in place.
• Wear proper personal protective
equipment (PPE)
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem
to be sure it is not plugged.
2. Pry the beat seat band back. Insert a pry
bar or screwdriver under O-ring and
pull it from groove. (Photo 2)
Exhaust air from both tires of a dual
assembly before working on either.
Cut through O-ring to be sure a new
one will be used for remounting.
3. Place hook of hydraulic demounting
tool into pry bar pocket. (A continuous lip is provided on some bases.) Adjust the ram adjusting screw so the tool
will remain vertical under pressure.
(Photo 3) In some cases, the pressure
foot may have to be removed to assure
a good fit.
Photo 3
40
Be sure tool is properly seated. If not
properly seated it can fly off with great
force. Always stand away from tool when
it is under pressure.
Take additional bites at 2-foot intervals
until bead is unseated.
6. Use hoist or pry bar to remove bead
seat band. (Photo 5)
4. Stand away from assembly and activate
hydraulic pump to apply pressure. If
necessary, release pressure and readjust
ram adjusting screw. Depress flange
1/2” - 3/4” (13-19 mm). Use a screwdriver to slip a nut (or similar object)
between flange and lip of beat seat.
7. Remove flange.
8. Turn assembly over. Use procedure to
unseat bead on back.
9. Use hoist to lift rim base from tire.
10. Remove back flange.
Keep fingers clear at all times.
NOTE: When the bead is difficult to
loosen, use two hydraulic demounting
tools.
Release pressure slowly. Check to make
sure the nut (or other spacer) will not
slip out. If not securely positioned, it
can become a projectile and cause serious injury.
When using two tools, be careful not to
bend flange or damage butt weld.
5. Move tool 2-feet around rim for second
bite.
Also, work around the tire several times.
Each time, make a slightly greater push.
Block with larger objects.
Do not use tool near flange butt weld.
(Photo 4)
Photo 4
Photo 5
41
Horizontal Demounting 51” and Larger HDT Rims
Read safety instructions
(pages 26-35) before proceeding.
After complete deflation, place assembly
on blocks with gutter side up. (Photo 1)
Follow steps in order shown.
PROCEDURE REQUIRES:
1. Stand inside rim. Use 2 pry bars and
carefully remove lock ring. Start at split
and work tools around the ring. (Photo
2 and Photo 3)
• Hydraulic demounting tool
• 2 pry bars
Before removing any rim or wheel component:
2. Insert a pry bar or screwdriver under Oring and pull it from groove. (Photo 4)
• Wear proper personal protective
equipment (PPE)
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem
to be sure it is not plugged.
Cut through O-ring to be sure a new
one will be used for remounting.
3. Start 30-degrees from flange butt weld.
Place hooks of hydraulic demounting
tool under bead seat band. Adjust the
ram adjusting screw so the tool will remain vertical under pressure. (Photo 5)
Exhaust air from both tires of a dual
assembly before working on either.
Photo 1
Photo 2
Photo 4
Photo 3
42
Be sure tool is properly seated. If not
properly seated it can fly off with great
force. Always stand away from tool when
it is under pressure to avoid risk of serious injury.
Do not use tool within 12” (30cm) of
flange butt weld.
4. Stand away from assembly and activate
hydraulic pump to apply pressure. If
necessary, release pressure and readjust
ram adjusting screw. Depress flange
3/4” -1” (19-25mm). Use a screwdriver
to slip a nut (or similar object) between
flange and lip of bead seat. (Photo 6)
Stand clear when using a cable or chain
sling. It can snap and lash out.
Keep fingers clear at all times.
8. Turn assembly over. Use procedure described to unseat bead on back.
Take additional bites at 2- to 3-foot intervals until bead is unseated.
6. Use hoist or pry bar to remove bead
seat band.
7. Remove flange.
Release pressure slowly. Check to make
sure the nut (or other spacer) will not slip
out. If not securely positioned, it can become a projectile and may cause serious
injury.
9. Use hoist to lift rim base from tire
(Photo 7)
10. Use hoist to lift and remove back
flange. (Photo 8)
5. Move tool 2- to 3-feet (60-90 cm)
around rim for second bite.
43
Vertical Demounting Tires on a Machine
Be sure tool is properly seated. If not
properly seated it can fly off with great
force. Always stand away from tool when
it is under pressure to avoid risk of death
or serious injury.
Read safety instructions
(pages 26-35) before proceeding.
PROCEDURE REQUIRES:
• Hydraulic demounting tool (Foot
activated model is recommended –
Photo 1)
• Pry bar
2. Stand away from assembly and activate
hydraulic pump to apply pressure. If
necessary, release pressure and readjust
ram adjusting screw. Depress flange
3/4” (19mm). Place end of pry bar between flange and lip of bead seat band.
Before placing jack in position, block tire and
wheel on other side of vehicle.
Always use hardwood blocks under jack, or
steel stand.
Keep fingers clear at all times.
Release pressure.
Jack may slip. Always crib up vehicle with
blocks, or stand.
3. Move tool 2-feet around rim for second
bite.
Before removing any rim or wheel component:
Do not use tool near flange butt weld.
• Wear proper personal protective
equipment (PPE).
Take additional bites at 2-foot intervals
until bead is unseated.
• Remove the valve core. (Photo 1)
4. Use pry bar to remove lock ring. Start
near split. (Photo 3)
• Exhaust all air from the tire.
5. Insert a pry bar or screwdriver under Oring and pull it from groove. (Photo4)
Cut through O-ring to be sure a new
one will be used for remounting.
• Run a piece of wire through the stem
to be sure it is not plugged.
Exhaust air from both tires of a dual assembly before working on either.
6. Insert pry bar under flange and pry bead
seat band loose. (Photo 5) Support
band on thigh. With assistance, lower
it to ground. Roll out of way. (Photo 6)
Tire and wheel components are heavy. To
avoid back and foot injuries, two people
should lower components.
7. With assistance, remove flange. Carefully lower it to ground. Roll out of way.
1. Place hook of hydraulic demounting
tool into pry bar pocket. (A continuous lip is provided on some bases.) Adjust ram adjusting screw so tool will
remain perpendicular to tire under
pressure (Photo 2)
44
Stand clear when using a cable or chain
sling. It can snap and lash out.
8. Unseat back tire bead. Use hydraulic
tool. If insufficient clearance, use
shorty ram between vehicle frame and
back flange. (Photo 7)
10. With assistance, remove back flange.
9. Use boom truck and sling or tire handler to remove tire.
45
Demounting Tube-Type Off-The-Road Tires
Read safety instructions
(pages 26-35) before proceeding.
1. Unseat beads as described for the size
assembly involved.
Before moving any rim or wheel component:
2. Before removing tire from rim, be sure
valve will clear gutter section.
• Wear proper personal protective
equipment (PPE).
• Remove the valve core.
• Exhaust all air from the tire.
• Run a piece of wire through the stem
to be sure it is not plugged.
3. Remove flap from tire. Use tool with a
rounded end to pry out and away from
beads.
NO TE : If necessary, use a tire spreader to
spread the beads. A small auto jack can be
used as a spreader.
Exhaust air from both tires of a dual
assembly before working on either.
4. Remove the tube. Be careful not to pull
on valve stem or enlarge any areas of
damage.
Inflation Procedures for Proper Mounting
After Tire & Rim Assembly Has Been Placed on Machine
During mounting, all off-the-road tires
must be inflated, deflated, and reinflated.
This procedure has two purposes.
• Grader tires inflate to 50 PSI (3.50
Bar)
• Less than 29” rim diameter tires
inflate to 75 PSI (5.25 Bar)
• Larger than 29” rim diameter tires
inflate to 90 PSI (6.25 Bar)
First, it helps assure that the beads are
seated properly. Beads must seat against rim
flanges and be in compression on tapered
bead seats.
Failure to seat the beads can cause bead
durability problems. In tubeless tires, it can
also allow air leakage under the beads.
Second, it removes buckles and uneven
stress from flaps and tubes.
Air pressure is the only positive method to
fully seat off-the-road tire beads. Operating
a tire will not seat an improperly mounted
tire. It will result in damage to the beads
and shortened tire life.
Initial inflation varies with rim size:
46
Mounting Off-The-Road Tires
On Type T - TL - TLD - TGD and TGF Rims
(Tubeless-type. See page 60 for additional instructions for tube and flap insertion.)
Read safety instructions
(pages 26-35) before proceeding.
7. Stand on flange to position it below
both grooves in the rim base. Snap lock
ring into (upper) lock ring groove.
(Photo 3 –next page)
1. Before mounting:
• Clean all rim components. Remove
rust and dirt. Lock ring and O-ring
grooves must be clean and rust free
for proper seating and seal. (Photo 1)
• Inspect parts for damage. Replace all
cracked, worn, damaged, or severely
rusted components.
• Paint or coat all parts with rust inhibitor.
• Double check to be sure correct
parts are being used.
• Inspect inside of tire. Remove any
foreign matter. Use compressed air
to dry any moisture.
• Be sure the embossed safety bulge on
lock ring is up.
(continued on next page)
2. Install valve spud on rim. Tighten to
proper torque.
Photo 1
3. Place rim on 4”-6” blocks (10-13 cm)
or mounting stand. Fixed flange side
must be down.
4. Lubricate bead seat area on rim and
both tire beads with vegetable lubricant. Use only approved vegetablebased lubricants.
• Lubricate from toe to GG ring on
tire.
Photo 2
• Lubricate moderately, but thoroughly.
5. Place tire over rim base.
6. Place side flange over rim base. (Photo
2)
• Push down as far as possible.
• Make sure flange does not bind on
rim base.
47
8. Lubricate O-ring with vegetable lubricant.
during inflation. Inflation above 10% of
recommended is to be done only after assembly is installed on the machine
9. Lubricate entire O-ring groove area
with vegetable lubricant.
• Always stand away from the rim during inflation.
10. Snap O-ring into place. Place on one
side. Stretch like a rubber band. Seat
on other side. (Photo 4)
• After pressure has reached 3 PSI (.5
Bar), check all around rim for proper
component seating. If necessary, deflate tire and adjust components.
• Do not roll O-ring into place.
• If necessary, push side flange down
with hand tool to expose O-ring
groove.
15. If assembly is ok, inflate to 50 PSI (3.5
Bar).
NO TE : Lock rings must be fully seated in
gutter around the flange.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
12. Insert drive lugs as required.
16. Adjust to proper operating pressure
11. Check components for proper assembly.
13. Place assembly in safety cage. (Photo
5)
Ballasted tires (liquid or dry filled) must
first be seated with air.
NO TE : If no cage is available, some other
approved restraining device must be used
After seating, exhaust air and add ballast. (See pages 68-73 for additional information.)
Photo 3
Photo 4
Photo 5
48
Mounting Bias Off-The-Road Tires on EM Rims
(Tubeless-type. See page 60 for additional instructions for tube and flap insertion.)
Read safety instructions
(pages 26-35) before proceeding.
3. Place back flange on base. (Photo 2)
4. Lubricate tire beads with vegetable lubricant.
1. Before mounting:
• Clean all rim components. Remove
rust and dirt. Lock ring and O-ring
grooves must be clean and rust free
for proper seating and seal. (Photo 1)
• Inspect parts for damage. Replace all
cracked, worn, damaged, or severely
rusted components.
• Paint or coat all parts with rust inhibitor.
• Double check to be sure correct
parts are being used.
• Inspect inside of tire. Remove any
foreign matter. Use compressed air
to dry any moisture.
• Use only approved vegetable-based
lubricants.
• Lubricate from toe to GG ring on
tire.
• Lubricate moderately, but thoroughly.
5. Use tire hoist with sling or tire handler
to lift tire. Place on rim. (Photo 3)
Stand clear when using a cable or chain
sling. It can snap and lash out.
6. Depress tire bead area to ease assembly
of next components. (Photo 4)
2. Place base on 4” - 6” blocks (10-13 cm)
or mounting stand. Gutter side must be
up.
(Continued on next page)
Photo 1
Photo 3
Photo 2
Photo 4
49
7. Place front flange over rim base.
(Photo 5)
Typical Heavy Duty Driver
Application
8. Place bead seat band on rim base.
Be sure driver pockets in bead seat
band and base are in line (if present).
Band will bind if cocked even slightly.
If it becomes wedged, DO NOT
HAMMER INTO PLACE! Lift, and
lower it correctly. If necessary, use a
rubber, lead, plastic or brass-faced mallet and tap lightly upward. (Photo 6)
Align driver pockets in bead seat
band and base.
Photo 5
Insert driving slug into driver
pocket on base.
Photo 6
Make sure all parts are properly
aligned before inflation.
View of final assembly.
50
9. Lubricate O-ring with vegetable lubricant.
• After pressure has reached 5 PSI (.5
Bar), check all around rim for proper
component seating. If necessary, deflate tire and adjust components.
• Inflation above 10% of recommended is to be done only after assembly is installed on the machine.
10. Lubricate entire O-ring groove area
with vegetable lubricant. (Photo 7)
11. Snap O-ring into place. Place on one
side. Stretch like a rubber band. Seat
on other side. (Photo 8)
Do not inflate tires with 16 ply rating or
less above 75 PSI (5.25 Bar).
12. Start the lock ring in the lock ring
groove. Push or walk it into place.
(Photo 9)
15. If assembly is ok, inflate as follows:
• Tires less than 29” in diameter = 75
PSI (5.25 Bar)
• Tires 29” and larger in diameter = 90
PSI (6.25 Bar)
13. Place drive key in pockets as required.
14. Place assembly in safety cage.
NOTE: If no cage is available, some other
approved restraining device must be used
during inflation.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
• Always stand away from the rim
during inflation.
16. Adjust to proper operating pressure.
Photo 7
Photo 9
Photo 8
51
Mounting Radial Off-The-Road Tires on EM Rims
Read safety instructions
(pages 26-35) before proceeding.
2. Place base on 4” - 6” blocks (10-13 cm)
or mounting stand. Gutter side must be
up.
1. Before mounting:
3. Lubricate tire beads with vegetable lubricant. ( Photo 4).
• Clean all rim components. Remove
rust and dirt. Lock ring and O-ring
grooves must be clean and rust free
for proper seating and seal. (Photo 1
and Photo 2)
• Inspect parts for damage. Replace all
cracked, worn, damaged, or severely
rusted components.
• Paint or coat all parts with rust inhibitor. (Photo 3)
• Double check to be sure correct
parts are being used.
• Inspect inside of tire. Remove any
foreign matter. Use compressed air
to dry any moisture.
• Use only approved vegetable-based
lubricants.
• Lubricate from toe to GG ring on
tire.
• Lubricate moderately, but thoroughly.
4. Lubricate the following areas on the
rim:
• Back rim base knurled area.
• Front O-ring groove area.
5. Lubricate components: (Photo 5)
• Bead seat band knurled area
• O-ring
Photo 1
Photo 3
Photo 2
Photo 4
52
6. Place back flange on rim base.
Typical Heavy Duty Driver
Application
7. Use cable sling or tire handler to lift
tire. Place on rim. (Photo 6)
Stand clear when using a cable or chain
sling. It can snap and lash out.
8. Depress tire bead area to ease assembly
of next components (Photo 7–next
page)
9. Place front flange over rim base.
Align driver pockets in bead seat
band and base.
10. Place bead seat band on rim base.
Be sure driver pockets in bead seat
band and base are in line (if present).
Band will bind if cocked even slightly.
If it becomes wedged, DO NOT
HAMMER INTO PLACE! Lift, and
lower it correctly. If necessary, use a
rubber, lead, plastic or brass-faced mallet and tap lightly upward.
Insert driving slug into driver
pocket on base.
(Continued on next page)
Photo 5
Make sure all parts are properly
aligned before inflation.
Photo 6
View of final assembly.
53
• Always stand away from the rim
during inflation.
• After pressure has reached 5 PSI (.5
Bar), check all around rim for proper
component seating. (Photo 9) If
necessary, deflate tire and adjust
components.
11. Snap O-ring into place. Place on one
side. Stretch like a rubber band. Seat
on other side.
12. Start the lock ring in the lock ring
groove. Push or walk it into place.
(Photo 8)
13. Place drive key in pockets as required.
15.Inflation above 10% of recommended
is to be done only after assembly is installed on the machine.
NO TE: If tire is to be inflated horizontally,
support rim above ground level. This allows
bottom bead to pilot (self-center) onto
bead seat taper.
• Tires 25” and larger in diameter = 90
PSI (6.25 Bar)
• If recommended operating pressure
is higher than 90 PSI, inflate to operating pressure.
If tire is to be inflated vertically, support
both tread and rim during inflation. This
prevents excessive bead to rim eccentricity.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
14.Place assembly in safety cage.
NOTE: If no cage is available, some other
approved restraining device must be used
during inflation.
Do not run tire until pressure has been
adjusted to operating pressure.
Photo 7
Photo 9
Photo 8
54
Mounting Radial Off-The-Road Tires on Single Piece Rims
Read safety instructions
(pages 26-35) before proceeding.
3. Lubricate wheel flanges, wheel well
and tire bead with vegetable lubricant.
1. Before mounting:
• Use only approved vegetable-based
lubricants.
• Lubricate moderately, but thoroughly.
• Clean wheel. Use wire brush to remove rust and dirt.
• Inspect wheel for damage. Do not
use cracked, worn, damaged, or severely rusted wheels.
• Paint or coat wheel with rust inhibitor.
• Inspect inside of tire. Remove any
foreign matter. Use compressed air
to dry any moisture.
4. Hook tire bead over C-clamp. This prevents slippage.
5. Use tire iron to hook bead onto wheel.
(Photos 2, this page, and 3, next page)
Be sure bead is slipping into wheel well.
6. Place tire iron between top bead and
wheel. Push down to force bead below
wheel flange.
2. Attach a small C-clamp to wheel
flange. This will keep bead from slipping around wheel flange during
mounting. (Photo 1)
7. Place vice grips on wheel flange to hold
top bead start position.
• Be sure vice grips are firmly attached
to wheel. (Photo 4)
• Lubricate 2nd bead 90° on both
sides of vice grips.
8. Start 90° on either side of vice grips.
Walk iron around top bead to hook
onto wheel.
(Continued on next page)
Photo 1
Photo 2
55
9. Place one tire iron across wheel. Use
2nd iron as lever to help hook final
bead section onto wheel. (Photo 5)
• After pressure has reached 5 PSI (.5
Bar), check all around wheel for
proper seating. If necessary, deflate
tire and adjust fit.
• Inflation above 10% of recommended is to be done only after assembly is installed on the machine
10.Place assembly in safety cage.
NOTE: If no cage is available, some other
approved restraining device must be used
during inflation.
11. If assembly is ok, inflate to working
pressure
• Always stand away from the wheel
during inflation.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
Photo 3
Photo 5
Photo 4
56
Mounting Tires on a Machine
(Tubeless-type. See page 60 for additional instructions for tube and flap insertion.)
Read safety instructions
(pages 26-35) before proceeding.
• Use only approved vegetable-base
lubricants.
• Lubricate from toe to GG ring on
tire.
• Lubricate moderately, but thoroughly.
4. Use tire boom or tire handler to lift
tire. Place on rim. (Photo 2)
1. Before mounting:
• Clean all rim components. Remove
rust and dirt. Lock ring and O-ring
grooves must be clean and rust free
for proper seating and seal. (Photo 1)
• Inspect parts for damage. Replace all
cracked, worn, damaged, or severely
rusted components.
• Paint or coat all parts with rust inhibitor.
• Double check to be sure correct
parts are being used.
• Inspect inside of tire. Remove any
foreign matter. Used compressed air
to dry any moisture.
2. Place back flange on rim base.
Stand clear when using a cable or chain
sling. It can snap and lash out.
5. Use boom to position front flange on
base. (Photo 3–next page)
(Continued on next page)
3. Lubricate tire beads with vegetable lubricant.
Photo 2
Photo 1
57
6. Use boom to position bead seat band
on rim base. (Photo 4)
12. Place drive key in pockets as required.
13.An approved restraining device must
be used during inflation.
Be sure driver pockets in bead seat
band and base are in line (if present).
• Always stand away from assembly
during inflation.
• After pressure has reached 5 PSI (.5
Bar), check all around rim for proper
component seating. If necessary, deflate tire and adjust components.
Band will bind if cocked even slightly.
If it becomes wedged, DO NOT
HAMMER INTO PLACE! Remove
from rim and position it correctly. If
necessary, use a rubber, lead, plastic
or brass-faced mallet and tap lightly
upward.
15. If assembly is ok, inflate as recommended.
7. Lubricate O-ring with vegetable lubricant.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
8. Use boom to hold rim components out
of way while installing O-ring.
9. Lubricate entire O-ring groove area
with vegetable lubricant.
16. Adjust to proper operating pressure.
10. Snap O-ring into place. Place on one
side. Stretch like a rubber band. Seat
on other side. (Photo 5)
11. Start the lock ring in the lock ring
groove. Push or walk it into place.
(Photo 6)
Photo 4
Photo 3
58
Typical Heavy Duty Driver
Application
Align driver pockets in bead seat
band and base.
Photo 5
Insert driving slug into driver
pocket on base.
Make sure all parts are properly
aligned before inflation.
Photo 6
View of final assembly.
59
Mounting Tube-Type Off-The-Highway Tires
Read safety instructions
(pages 25-35) before proceeding.
5. When ready to inflate, place assembly
in safety cage.
Rim preparation and component installation procedures are the same as tubeless.
NOTE: If no cage is available, some other
approved restraining device must be used
during inflation.
The tube is installed in tire before it is
placed on the rim.
• Always stand away from the rim
during inflation.
• After pressure has reached 5 PSI (.5
Bar), check all around rim for proper
component seating. If necessary, deflate tire and adjust components.
1. Inspect casing inside and out for breaks,
bruises and nails.
• Remove any foreign matter inside
the tire.
• Use compressed air to dry any moisture.
Inflation above 10% of recommended is to
be done only after assembly is installed on
the machine.
2. Stand tire vertically.
Do not inflate tires with 16 ply rating or
less above 75 PSI (5.25 Bar).
3. Place tube in casing.
• Start at bottom.
• Add air as tube is worked into tire.
This will hold it in place and prevent wrinkles.
6. If assembly is ok, inflate as follows:
• Tires less than 29” in diameter = 75
PSI (5.25 Bar)
• Tires 29” and larger in diameter = 90
PSI (6.25 Bar)
4. Insert flap.
• Be sure it is properly centered.
• Be sure it is free of wrinkles.
• Rotate tire as the flap is worked in.
Part being inserted is always at bottom.
• If necessary, use a dry lubricant (such
as soapstone) on flap and tube.
• If necessary, use a spreader or car
jack to spread beads.
N O TE : Air inflation equipment should
have a filter to remove moisture. This prevents corrosion inside the tire. Check filter frequently to be sure it functions
properly.
7. Completely deflate tire. This removes
buckles and uneven stresses from tube
and flap.
8. Reinflate to proper operating pressure.
60
SECTION III
Tire Selection for Expected
Service Conditions
All off-the-road (OTR) tires are subject to
the demands imposed by:
occurs because tread volume decreases as
tread elements are spaced further apart.
The greater the spacing, the better the tire
can dig in. But with less rubber on the
ground, the tread wears faster.
• heavy loads
• less than desirable operating conditions
To minimize compromises, Goodyear offers
a variety of off-the-road-tires with choices
of:
All require:
• High carcass strength to hold the inflation pressure necessary to carry
great loads and resist impact damage.
• Tread and sidewalls constructed rubber to help resist cuts and bruises.
• Tread patterns designed for high
traction to help transmit high engine horsepower.
• Flotation capabilities in soft underfoot conditions.
• tread design
• non-skid (tread) depth
• tread rubber compounds
for customers to select.
Tire Selection Criteria
There are four major areas to evaluate to
determine the best tire for an earthmover:
• Will it fit?
• Will it carry the load?
• Will it work in the underfoot conditions?
• Does it meet TMPH/WCF requirements?
Some operations, however, require different tire construction features for the job
site conditions. For example, operations
with long haulage cycles need more heat
resistant tread. Sharp rock service demands
extra tread depth to minimize cutting. Soft
underfoot or muddy conditions call for better traction.
OTR equipment manufacturers supply
technical data needed to determine tire
loading. These include:
Unfortunately, improvements in one area
of a tire’s performance often result in compromise.
• Empty and loaded vehicle weight.
• Load distribution by axle.
Increased tread depth typically results in reduced heat resistance. Heat is detrimental
to tire life. Loads or speeds may have to be
reduced to minimize heat generation. Otherwise, the tire may suffer structural damage and lose service life.
Equipment manufacturers typically deliver
their vehicles with a base tire. This base
tire is suitable for standard loads and inflations. Users, however, typically want to
carry larger loads to achieve maximum productivity. To carry heavier loads, larger or
higher ply rated tires must be used.
Similarly, improved traction is usually
gained at the expense of tread wear. This
61
Higher vs. Lower Inflation Pressure
Equipment manufacturers recommend
optional tires sizes and ply ratings for
different loading and operating conditions.
However, other considerations can affect
the tire choice.
Usually, you have two choices to carry a
given load:
1) a smaller size tire with a higher ply rating and inflation pressure; or
Factors involved in tire selection include:
2) a larger tire which will carry the load at
a lower inflation pressure.
• Material density. The weight per cubic
yard (cubic meter) varies greatly.
• Optional equipment can add substantial weight. It can also affect
weight distribution.
• Equipment modifications can affect
weight and its distribution. This is especially true of modifications by users.
• As equipment ages, it tends to become heavier when empty. Thus,
empty weight and distribution will
change over time.
If possible, the tire with a lower inflation
pressure should be selected. As a general
rule, lower inflation pressure offers these
advantages:
•
•
•
•
•
•
Increased tread wear.
Reduced cut and impact potential.
Improved repairability.
Improved retreadability.
Reduced rim and wheel breakage.
Reduced vehicle maintenance and
repair costs.
• Less road maintenance required.
Because of these factors, it is necessary to
estimate the actual operational tire loads.
An appropriate tire can then be selected
using recommended load and inflation tables.
Remember, however, that inflation supports and carries the load. If the weight demands high inflation pressure, the use of
lower inflation pressure is not an option.
The Tire and Rim Association (T&RA)
publishes suggested maximum inflation
recommendations for OTR tires.
Vehicle clearance must be considered.
While it may be necessary to estimate
wheel loads, actual load data is extremely
desirable. This can be obtained through an
on-site load study.
Goodyear has a sizeable history of tire load
data for a wide range of equipment. This
information is available to users to help in
their selection of OTR tires.
62
Ton Mile Per Hour (TMPH/TKPH) Requirement
Tires on OTR vehicles generate and buildup heat. There is a definite relationship between the heat generated and:
•
•
•
•
calculated from the time the vehicle first
moves until the shift finishes.
The formula gives a number called the Job
T M P H ( T K P H) .
Load
Speed
Travel distance
Improper inflation pressure
All Goodyear earthmover tires have a
TMPH/TKPH rating. These ratings are
available from any Goodyear OTR sales or
service department.
Excessive heat can lead to premature tire
wear.
The Job TMPH/TKPH must be known for
each wheel position. Tire selection can
then be based on:
The TMPH formula calculates the rate of
work tires can perform and stay within a
safe temperature range.
• A size and ply rating which will not
be overloaded.
• A type or design with a
TMPH/TKPH rating equal to the
job requirement.
Simply stated, the TMPH formula is:
Average Tire Load (short tons)
X Average Shift Speed (MPH)
S a m p l e T M PH c a l c u l a t i o n :
Similarly, the Ton Kilometer Per Hour
(TKPH) formula is:
Conditions:
Average Tire Load (metric tons)
X Average Shift Speed (KPH)
• Empty vehicle tire load = 20,000
pounds (10.0 tons)
• Loaded vehicle tire load = 34,000
pounds (17.0 tons)
• Number of Hours Worked = 8.0
hours
• The shift hauls 15 loads
• Each haul is 9.0 miles, round trip.
N O TE : Mines using computer dispatch
systems must use Average Hourly Speed
rather than average shift speed.
The Average Tire Load is calculated:
Empty Tire Load + Loaded Tire Load
2
Calculation:
The Average Tire Load must be obtained
for tires on each axle of a vehicle.
Average Tire Load =
10 Tons + 17 Tons
2
The Average Shift Speed is found by:
RTD X NTS
HW
Average Tire Load =
27 Tons = 13.5 Tons
2
where RTD = Round Trip Distance
NTS = Number of Trips Per Shift
HW = Number of Hours Worked
Average Shift Speed =
9 Miles Per Trip X 15 Trips Per Shift
8.0 Hours Worked Per Shift
The number of hours worked is the actual
number of vehicle operation hours. It is
63
• Each haul is 14 kilometers, round
trip.
Average Shift Speed =
135 Miles
8.0
= 16.9 MPH
Calculation:
J o b T M PH
Average Tire Load =
9 Metric Tons + 15 Metric Tons
2
13.5 Tons X 16.9 MPH = 228 TMPH
Conclusion:
Average Tire Load =
To av oid h eat pro blem s tires mu st h ave
a TMP H rating of 22 8 or h igh er.
24 Metric Tons = 12 Metric Tons
2
If the tires on the machine are rated less
than 228:
Average Shift Speed =
14 Kilometers Trip X 15 Trips Per Shift
8.0 Hours Worked Per Shift
• reduce speed
• reduce load
• Change to tires with a higher
TMPH rating
Average Shift Speed =
420 Kilometers = 26.25 KPH
8.0
NO TE : Each tire position on the machine
must be calculated and considered.
J ob T K P H
Formula Limitation:
12.0 Tons X 26.25 KPH = 315 TKPH
Tests have shown that the TMPH formula
does not apply:
NO TE : TKPH = TMPH X 1.46
• When tires are loaded 20% above
their capacity.
• On hauls of more than 20 miles.
Conclusion:
To av oid h eat pro blem s tires mu st h ave
a TKP H ratin g of 31 5 o r h igh er.
For haul lengths in excess of 20 miles one
way, consult a Goodyear OTR representative.
If the tires on the machine are rated less
than 315:
• reduce speed
• reduce load
• Change to tires with a higher TKPH
rating
S a m p l e T K P H c a l c u l a t i o n:
Conditions:
• Empty vehicle tire load = 9,000 kilos
(9.0 metric tons)
• Loaded vehicle tire load = 15,000
kilos (15.0 metric tons)
• Number of Hours Worked - 8.0
hours
NO TE : Each tire position on the machine
must be calculated and considered.
• The shift hauls 15 loads.
64
F o r m u l a L i m it a t io n :
• On hauls of more than 32 kilometers.
Tests have shown that the TKPH formula
does not apply.
• For haul lengths in excess of 32 kilometers one way, consult a Goodyear
OTR representative.
• When tires are loaded 20% above
their capacity.
The Work Capability Factor (WCF)
Goodyear dozer and loader tires are used in
dig and load service. They are normally selected from the TRA 5 MPH/10 KPH tables. Tire heat build-up in this type of
operation is not a factor.
Average Tire Load (metric tons)
X Maximum Average Speed (KPH)
The Average Tire Load is calculated:
Empty Tire Load + Loaded Tire Load
2
Operators sometimes use loaders as transport machines. When the haul distance exceeds 50 feet (15 meters), the operation is
termed load and carry. This type of service
can involve speeds above 5 MPH (10
KPH). Longer hauls and rapid work cycles
also are common.
Tire load data should be the actual loads, if
possible. If these are not known, the manufacturer’s specifications can be used.
The Maximum Average Speed is found by:
Round Trip Distance
X Maximum Cycles per Hour
Dozer and loader tires are thicker and
stronger than other OTR designs. Heat will
build up faster in these designs.
Sample WCF calculation (English Units):
Tire heat build-up is a function of work the
tire is doing.
Conditions:
• Empty vehicle tire load = 15.0 tons
• Loaded vehicle tire load = 30.0 tons
• Maximum cycles per hour = 35
• Each haul is 800 feet (.152 miles),
round trip.
The Work Capability Factor (WCF)
provides a way to select tires that can handle the work.
All Goodyear dozer and loader tires have a
WCF. These ratings are available from any
Goodyear OTR sales or service department.
Calculation:
Average Tire Load =
The formula to determine a machine’s
WCF requirement focuses on its front
wheels. These carry substantially more
weight.
15 Tons + 30 Tons
2
Average Tire Load =
The WCF formula is:
45 Tons = 22.5 Tons
2
Average Tire Load (short tons)
X Maximum Average Speed (MPH)
Max. Average Speed =
Similarly, the Metric WCF formula is:
65
.15 Miles X 35 Trips
1 Hour
Average Tire Load =
14 Metric Tons + 28 Metric Tons
2
5.25 MPH
WCF
Average Tire Load =
22.5 Tons
X 5.25 MPH
42 Metric Tons = 21 Metric Tons
2
119.7 = 120 WCF
Max. Average Speed =
Conclusion:
.25 KM X 35
1 Hour
To av oid h eat pro blem s tires mu st h ave
a WCF of 11 9 o r h igh er.
8.75 = KPH
If the tires on the machine are rated less
than 120:
•
•
•
•
WCF
21.0 Tons
X 8.75 KPH
reduce speed.
reduce load.
reduce number of cycles.
Changes to tires with a higher WCF
rating.
183.75 = 184 WCF
Conclusion:
To av oid h eat pro blem s tires mu st h ave
a WCF of 18 4 o r h igh er.
F o r m u l a L i m it a t io n :
Tests have shown that the WCF formula
does not apply:
If the tires on the machine are rated less
than 184:
• When tires are loaded more than
15% above their rated capacity.
• On hauls of more than 2000 feet.
• reduce speed
• reduce load
• Change to tires with a higher WCF
For haul lengths in excess of 2000 feet one
way, consult a Goodyear OTR representative.
F o r m u l a L i m it a t io n :
S amp le WCF c alcu lation (metric units):
Tests have shown that the WCF formula
does not apply:
Conditions:
• When tires are loaded more than
15% above their rated capacity.
• On hauls of more than 600 meters.
• Empty vehicle tire load = 14.0 metric
tons
• Loaded vehicle tire load = 28.0 metric
tons
• Maximum cycles per hour = 35
• Each haul is 250 Meters (.25 kilometers), round trip.
For haul length in excess of 600 meters one
way, consult a Goodyear OTR representative.
Calculation:
66
WCF Field Applications
Job Conditions
The WCF can be used to determine maximum speeds and cycles for tires. This can
help operators adjust operating conditions
for:
Load capacity and TMPH/TKPH (or
WCF) ratings tell whether a tire can handle the job. They are not the only tire selection criteria, however.
• Existing tires where changeover is
impractical.
• New tires where size or equipment
limitations restrict selection.
Other site and operational factors that
have to be considered include:
1) Environmental conditions such as:
• Heavy rain
• Heavy snow
• Wide ranges in ambient temperatures
For example:
Conditions:
• Empty Front Tire Load = 30,000
pounds (15 tons)
• Loaded Front Tire Load = 60,000
pounds (30 tons)
2) Availability of capable, trained personnel.
3) Length of time the project will last.
15 tons + 30 tons =
2
• Are permanent haul roads feasible?
• Is a haul road maintenance program
feasible?
45 tons
2
= 22.5 tons average load
4) Length of work day.
• One way haul length = 400 feet
(800 feet round trip)
• Tire on loader: 33.25-35 (L-5) WCF
= 115
To determine maximum speed use the
formula:
• Daylight only operation provides visibility needed to avoid tire hazards.
• One or two shift operation allows
more tire cool-down time.
Goodyear earthmover tire sales engineers
receive continuous training on tire
applications. They can provide knowledgeable advice on tire selection.
115 WCF = 5.11 MPH
22.5 tons
To determine maximum cycles per hour use
the formula:
5.11 MPH X 5280 Ft (mile) = Cycles
800 Feet
26908.8 = 33.7 = 33 Cycles/Hour
800
67
Ballasted Tires
Increasing the load on the drive axle offers
many advantages:
•
•
•
•
•
•
•
Tubeless tires can be ballasted. Calcium
chloride solution will not harm rims if a
minimum of 75% fill is used.
Improved traction
Increased drawbar pull
Less slippage
Less pressure loss
Less tread wear
Less bounce
Less fuel consumption
A corrosion-proof gauge should be used to
check inflation pressures.
The valve must be in the highest position
when pressure is checked. This gives the
most accurate reading.
Mixing the Calcium Chloride Solution
The simplest way to add weight is to partially fill the tires with liquid.
The amount of calcium chloride needed to
prevent freezing varies with the temperature.
No less than 75% of the tire’s volume
should be filled with liquid. A 100% fill
can cause an unsafe pressure rise under
load.
Sp . Gra vi ty @ Ca C1 2/ Wa te r
62 º F / 18º C L bs / G a l
K g/ L
1.000
1.050
1.100
1.150
1.218
1.250
A solution of calcium chloride and water is
recommended for liquid filling. It offers:
• Additional weight (up to 50% over
plain water.
• It is not harmful to rubber.
• It is plentiful and low in cost.
• It is an effective antifreeze solution.
0.0
0.7
1.5
2.3
3.5
4.2
0.00
.08
.18
.28
.42
.50
F r e e z es B e l o w
ºF
ºC
+32 0
+21 -6
+7
-14
-10
-23
-30
-34
-42
-41
The tables on pages 70 - 73 show how
much fill is needed for different sized tires.
The solution strength will provide antifreeze protection to -30º F (-34º C). The
total weight gain in the right column is important for tire loading calculations.
Special Considerations For
Ballasted Tires
Before adding ballast, tires must be seated
with air. Inflate:
The amount of CaCl2/Water needed for
other sized tires can be easily calculated.
The volume of the tire must be known.
Then use the formula:
• Grader tires = 50 PSI (3.5 Bar)
• Tires less than 29” in diameter = 75
PSI (5.25 Bar)
• Tires 29” and larger in diameter = 90
PSI (6.25 Bar)
3/4 Vol. (in cu. in.) = Gal Water
269.6
The 269.6 divisor is established by:
After seating, exhaust air and add ballast.
(See page 46 for additional information.)
Volume of Gal. Water = 231 cu. in.
Swell Factor
= 38.6 cu. in.
Tubes filled with calcium chloride must be
equipped with special sealed-in base valves.
These prevent separation of the rubber
valve base and valve metal.
Vol of 1 Gal. H2O + 3.5 Lbs. CaCl2=
269.6 cu. in.
68
Swell factors will vary with the amount of
CaCl2 added. Other swell factors are available from any Goodyear OTR Sales or
Service office.
Weight can be found by:
Weight of Water = Gal. X 8.3
+ Weight of CaCl2 = Gal. X 3.5
Ballast Weight
Liquid Ballast Tables
The following conditions apply;
1) One gallon water = 231 cu. in. = 8.35 pounds
2) Ca Cl2 is added at 3.5 pounds per U.S. Gallon.
3) Quantities shown fill 75% of tire volume.
4) All quantities are rounded to nearest .5 Gallon, Liter, Pound or Kilogram.
SIZE
15.5-25
15.5R25
17.5-25
17.5-25
17.5-25
17.5-25
17.5R25
17.5R25
17.5R25
17.5R25
17.5R25
600/65R25
20.5-25
20.5-25
20.5-25
20.5R25
20.5R25
20.5R25
650/65R25
23.5-25
23.5-25
23.5-25
23.5R25
23.5R25
23.5R25
750/65R25
23/90-25
26.5-25
26.5-25
26.5-25
26.5-25
26.5-25
26.5R25
26.5R25
29.5-25
29.5-25
29.5-25
29.5-25
29.5-29
29.5-35
VOLUME
DESIGN
SGL DL-2A
GP-2B
HRL D/L-3A
SGL DL-2A
SMO D/L-5B
SMO D/L-5C
AS 3A
GP-2B
RL-5K
RL-5S
SG 2B
GP-3D
HRL E/L-3A
SGL EL-2A
SXT LDR
GP-4B AT
RL-5K
RT-3B
GP-3D
HRL E/L-3A
SGL EL-2A
SHRL XT DL
GP-4B AT
RL-5K
RT-3B
GP-3D
SMO-5C
SHRL
SHRL DL
SM0 D/L-5C
SMO D/L-5D
SXT DL(HRL DL)
RL-5K HI-STAB
RT-3B
HRL D/L-3A
SHRL XT DL
SMO D/L-5A
SXT DL(HRL DL)
SHRL
SHRL 8
H2O Required
CU. IN. US Gal
12761
15500
18872
17973
15154
15154
17325
20236
17325
17325
17325
29568
27499
27535
22938
28875
26960
28875
34650
39002
33564
33888
41072
37205
40425
51975
30839
43428
51559
40610
40610
42804
48780
57750
64884
63987
61798
61798
71333
74521
CaCl2
Liter
35.5
43.0
52.5
50.0
42.0
42.0
48.0
56.5
48.0
48.0
48.0
82.5
76.5
76.5
64.0
80.5
75.0
80.5
96.5
108.5
93.5
94.5
114.5
103.5
112.5
144.5
86.0
121.0
143.5
113.0
113.0
119.0
135.5
160.5
180.5
178.0
172.0
172.0
198.5
207.5
134.5
163.0
198.5
189.5
159.5
159.5
182.5
213.0
182.5
182.5
182.5
311.5
289.5
290.0
241.5
304.0
284.0
304.0
365.0
410.5
353.5
357.0
432.5
392.0
425.5
547.5
324.5
457.5
543.0
427.5
427.5
451.0
513.5
608.0
683.5
674.0
651.0
651.0
751.0
784.5
69
Req’d.
Pounds
Kgs
124.5
151.0
184.0
175.0
147.5
147.5
168.5
197.0
168.5
168.5
168.5
288.0
268.0
268.0
223.5
281.0
262.5
281.0
337.5
380.0
327.0
330.0
400.0
362.5
393.5
506.0
300.5
423.0
502.0
395.5
395.5
417.0
475.0
562.5
632.0
623.0
601.5
601.5
694.5
725.5
56.5
68.5
83.5
79.5
67.0
67.0
76.5
89.5
76.5
76.5
76.5
130.5
121.5
121.5
101.5
127.5
119.0
127.5
153.0
172.5
148.5
149.5
181.5
164.5
178.5
229.5
136.5
192.0
227.5
179.5
179.5
189.0
215.5
255.0
286.5
282.5
273.0
273.0
315.0
329.0
Wt. Added
Pounds
Kgs
419.0
509.0
619.5
590.0
497.5
497.5
568.5
664.5
568.5
568.5
568.5
970.5
902.5
904.0
753.0
948.0
885.0
948.0
1137.5
1280.5
1102.0
1112.5
1348.0
1221.5
1327.0
1706.0
1012.5
1425.5
1692.5
1333.0
1333.0
1405.0
1601.5
1895.5
2130.0
2100.5
2028.5
2028.5
2341.5
2446.0
190.0
231.0
281.0
267.5
225.5
225.5
258.0
301.5
258.0
258.0
258.0
440.0
409.5
410.0
341.5
430.0
401.5
430.0
516.0
581.0
500.0
504.5
611.5
554.0
602.0
774.0
459.5
646.5
767.5
604.5
604.5
637.5
726.5
860.0
966.0
953.0
920.0
920.0
1062.0
1109.5
SIZE
VOLUME
DESIGN
H2O Required
CU. IN. US Gal
CaCl2
Liter
Req’d.
Pounds
Kgs
29.5R25
29.5R25
29.5R25
29.5R25
29.5R25
875/65R29
29.5R29
33.25-29
33.25-35
33.25R29
35/65-33
35/65-33
35/65-33
35/65-33
875/65R33
875/65R33
37.25-35
37.25-35
40.5/75R39
41.25/70-39
45/65R39
1150/65R39
45/65-45
45/65-45
1150/65R45
52/80-57
52/80-57
GP-2B
RL-4K
RL-4K HI-STABILITY
RL-5K
RL-5K HI-STAB
GP-4D
RL-5K
SHRL 8
SHRL 8
RT- 3A
NDL D/L-5/15C
NRL D/L-4A
NRL D/L-5A
NSM D/L-5B
RL-4K HI-STABILITY
RL-5K HI-STAB
SHRL 8
SXT DL(HRL DL)
RT-3A+
NRL D/L-5A
RL-5K
RL-5K HI-STAB
NDL D/L-5/15C
NRL D/L-5A
RL-5K HI-STAB
DRL 4/15C
HRL D/L-4G
71079
75075
71749
63266
62102
75075
75075
66528
50427
100993
71933
89687
77285
71933
98175
86625
139409
98106
179025
148100
173250
170940
170524
180452
190575
340102
340102
748.5
790.5
755.5
666.0
654.0
790.5
790.5
700.5
531.0
1063.5
757.5
944.5
814.0
757.5
1034.0
912.0
1468.0
1033.0
1885.0
1559.5
1824.5
1800.0
1795.5
1900.5
2007.0
3581.5
3581.5
692.0
731.0
698.5
616.0
604.5
731.0
731.0
648.0
491.0
983.5
700.5
873.5
752.5
700.5
956.0
843.5
1357.5
955.0
1743.0
1442.0
1687.0
1664.5
1660.5
1757.0
1855.5
3311.5
3311.5
314.0
331.5
317.0
279.5
274.0
331.5
331.5
294.0
222.5
446.0
317.5
396.0
341.5
317.5
433.5
382.5
616.0
433.0
790.5
654.0
765.0
755.0
753.0
797.0
841.5
1502.0
1502.0
197.5
209.0
199.5
176.0
173.0
209.0
209.0
185.0
140.5
281.0
200.0
249.5
215.0
200.0
273.0
241.0
388.0
273.0
498.0
412.0
482.0
475.5
474.5
502.0
530.0
946.0
946.0
70
Wt. Added
Pounds
Kgs
2333.5
2464.5
2355.0
2077.0
2038.5
2464.5
2464.5
2184.0
1655.5
3315.0
2361.5
2944.0
2537.0
2361.5
3222.5
2843.5
4576.5
3220.5
5876.5
4861.5
5687.0
5611.5
5597.5
5923.5
6256.0
11164.5
11164.5
1058.5
1118.0
1068.0
942.0
924.5
1118.0
1118.0
990.5
751.0
1503.5
1071.0
1335.5
1151.0
1071.0
1461.5
1290.0
2076.0
1461.0
2665.5
2205.0
2579.5
2545.5
2539.0
2687.0
2837.5
5064.0
5064.0
EARTHMOVER TIRES
Bias Construction – Haulage Service
HRR-1A (E-1)
HRL-3A (E-3)
SRB-7A (E-7)
Hard Rock Rib tire for the
steer axles. Three wide ribs
help give a smooth ride and
straight-ahead tracking while
lateral tie bars and multiple
breakers help stabilize the
tread to reduce side slippage.
Elliptical lateral tread lugs and
a stabilizing center bar help
provide a sure-footed grip.
Our maximum flotation mobility tire. It has a wide face and
even wearing rib tread design
that is for use in soft, fine
grain sand. It combines minimum sinkage, adequate traction, and minimizes
heel-and-toe effect for
enhanced performance in all
wheel positions.
HRL-4B (E-4)
MRL-4B (E-4)
A 150 level tire for the most
severe mine, quarry and construction work. The deep tread
and massive center rib provide long wear in tough environments.
A 150 level all position tire for
severe rock service operations where TMPH/TKPH is not
excessive. The extra tread
depth, relatively flat tread face,
and a center riding rib help
provide long wear.
71
EARTHMOVER TIRES
Bias Construction – Haulage & Scraper Service
HRL E/L-3A (E-3)
SGL E/L-2A (E-2)
HRL-3F (E-3)
The wide base version of our
popular HRL-3A provides excellent traction in both rough
and soft underfoot conditions.
Provides excellent traction in
soft soil conditions. Tapered
tread bars and an open center
helps force mud and dirt out
of the tread as the tire turns.
Provides high traction and
mobility for a scraper tire. Its
tapered tread bars are exceptionally effective in soft underfoot conditions. A grooved
centerline provides more biting edges and helps resist
heat build-up.
SHRL 8 (E-3)
SHRL (E-3)
Excellent traction in both
rough and soft underfoot conditions. Nylon carcass and
multiple breakers under the
tread helps stand up to heavy
off road hauling
Wide base tire helps provide
excellent traction in both
rough and soft underfoot conditions. Multiple breakers
under the tread to help stand
up to heavy off road hauling.
72
EARTHMOVER TIRES
Bias Construction – Dozer/Loader Service
SGL D/L-2A
(L-2)
HRL D/L-3A
(L-3)
SHRL D/L
(L-3)
SHRL XT DL
(L-4)
Provides excellent
traction in soft soil
conditions. Tapered
tread bars and an
open center help force
mud and dirt out of
the tread as the tire
turns.
Heavy tread lugs deliver good traction
while extra tough, cut
resistant shoulders
help provide protection in rough environments.
Angled lug tire for use
on front end loaders
and dozers. Heavy
driving bars and extra
tough cut resistant
shoulders help provide protection
against job site hazards.
Extra-tread tire with
durable tread compounds. Heavy undertread and bold
shoulder buttresses
for enhanced durability in severe rock service.
NRL D/L-4A
(L-4)
DRL 4/15C
(L-4)
HRL D/L-4G
(L-4)
A general purpose low
profile (65 aspect
ratio) tire built to help
wear, traction, and
toughness. A 150 level
tread depth provides
long wear. Multiple
steel belts result in a
wider, flatter footprint
that help extend tread
life.
Half-trac design for
severe operation.
Steel breakers to aid
cut resistance and
toughness.
Long wear provided
by the massive lugs
and tough tread.
Enhanced cut and impact resistance from
the steel breakers.
73
EARTHMOVER TIRES
Bias Construction – Dozer/Loader Service
NRL D/L-5A (L-5)
NDL D/L-5/15C (L-5)
SXT DL (L-5)
A general purpose low profile
(65 aspect ratio) tire, built to
help wear, traction, and toughness. A 250 level tread depth
helps provide long wear in severe rock service applications.
Multiple steel belts aid tread
life.
A deep tread, low profile (65
aspect ratio) tire for underground operations. A 250 level
tread depth and a 15:1 solid to
void ratio help provide extra
long wear. Multiple steel belts
under the tread help promote
longer wear and increase penetration resistance.
This is a 250 tread level tire
for front end loaders. The wide
flat tread helps provide excellent wear and stability. The
extra thick sidewall helps resist cuts.
SMO D/L-5A,
5B,5C,5D (L-5S)
NSM D/L-5B (L-5S)
A 250 level smooth tread of
Goodyear’s ultra abrasion resistant compound helps deliver the maximum wear in
severe underground operations.
A smooth tread low profile (65
aspect ratio) tire built to help
deliver long wear and toughness in severe service operations. A 250 level tread depth
and an abrasion resistant
compound helps provide long
wear. Multiple steel belts aid
tread life.
74
EARTHMOVER TIRES
Bias Construction – Grader Service
RGB-1A (G-1)
SGG-2A (G-2)
An ideal tire for the
front wheels of power
graders and all wheels
of drawn graders.
Continuous ribs, deep
tread grooves, and
strong, stable construction help the operator make clean
accurate blade cuts.
An all purpose tire for
graders which must
operate in many types
of environments. Double-pitch, overlapping
tread bars help provide enhance traction
on soft surfaces.
HRL E/L-3A
(G-3)
SHRL XT DL
(L-4)
Heavy tread lugs help
deliver good traction
while extra tough, cut
resistant shoulders
aid maximum protection in rough environments.
Extra-tread tire in a
23.5-25 size with a
tough tread. Heavy
under-tread and bold
shoulder buttresses
for enhanced toughness in severe rock
service.
SGL E/L-2A
(G-2)
Excellent traction in
soft soil conditions.
Tapered tread bars
and an open center
help force mud and
dirt out of the tread as
the tire turns.
SXT DL (L-5)
Super-extra tread in a
235-25 size for motor
graders. Wide flat
tread helps provide
excellent wear and
mobility. Extra thick
sidewall helps resist
cuts.
75
RKG-3A (G-3)
Massive lugs and
thick sidewalls help
give excellent performance and toughness in severe
pioneering work. The
tread lugs are angled
for enhanced forward
and back traction over
rough or soft surfaces.
EARTHMOVER TIRES
Bias Construction – Mine Service
SMO-5A, 5B, 5C, 5D
(L-5S)
Smooth super extra tread for
underground mine vehicles
operating in severe environment. The extra thick sidewalls
help resist cuts and snags.
UMS-3A
General purpose design for
medium size underground
mine equipment. Tire has a
tough casing and helps provide excellent traction with a
abrasion resistant tread.
SMO D/L-5A, 5-B, 5-C,
5-D (L-5S)
A 250 level smooth tread of
Goodyear’s ultra abrasion resistant compound helps delivers excellent wear in severe
underground operations.
EARTHMOVER TIRES
Bias Construction – Port & Container Service
ELV-3A (IND 3)
ELV-4/5A (IND-4) ELV-4B (IND-4)
ELV-5D (IND-5)
Excellent tire with
tough casing and
thick sidewalls for
general purpose applications.
Enhanced wear in
severe applications
due to the unique
tread design having a
high solid to void ratio
footprint. Triple tread
construction for enhanced stability.
Smooth extra tread for
superior wear and to
help maximum
resistance and related
loss of service life.
Extra tread tire for
long wear and low
cost per hour of operation. Good traction in
poor underfoot conditions provided by the
massive lug design.
76
EARTHMOVER TIRES
Radial Construction – Scraper Service
RL-2+ (E-3+T)
RL-3 (E-3)
RL-3J (E-3)
Unique tire for use in both soft
underfoot conditions and
moderately severe operations.
Provides good forward and
lateral traction
Standard 100 level tread depth
helps in high speed operations in moderate to severe
environments. Hefty shoulders
help provide excellent forward
traction.
All purpose 100 level scraper
tire with enhanced forward
and lateral traction. Added
sidewall cut protection provided by the extended sidewall buttressing.
RT-3A (E-3)
RT-3A+ (E-3+)
Unique geometric lug pattern
helps provide even pressure
distribution, increases mobility and optimizes traction and
treadwear.
Wide lugs for smooth, vibration free ride. Buttressed
shoulder lugs are self cleaning, helps extend treadlife and
resist sidewall cutting.
77
EARTHMOVER TIRES
Radial Construction – ADT Service
GP-2B (E-3)
GP-3D (E-3T)
TL-3A+ (L-3+)
For articulated dumps, it offers superb traction and excellent mobility. A zig-zag center
rib helps to deliver long tread
life.
Centerline riding lugs offer
good lateral traction, long
wear and a smooth ride. 65
Series profile helps deliver
high flotation, enhanced stability and reduced ground
pressure.
Wide open lug pattern for enhanced traction and ride. Enhanced groove design for
excellent self cleaning even in
muddy conditions.
RL-2+ (E-3+T)
GP-4B AT (E-4)
GP-4D (E-4)
Unique tire for use in both soft
underfoot conditions and
moderately severe operations.
Provides good forward and
lateral traction
Its non-directional tread design offers superb forward
and backward traction along
with enhanced mobility. A zigzag center rib helps to deliver
long tread life.
The open face tread design
and wide shoulder grooves
are self cleaning for maximum
traction. The interlocking lug
design also helps enhance lateral traction.
78
EARTHMOVER TIRES
Radial Construction – Haulage Service
GP-2B (E-3)
RL-3 (E-3)
RL-3+ (E-3+)
RL-3J (E-3)
Non-directional tread
design helps provide
excellent traction and
mobility. Solid center
rib offers improved
ride.
Standard 100 level
tread depth helps resist heat build up in
high speed operations.
Hefty shoulders helps
provide excellent forward traction
A 125 level tire for high
speed haulage operations in medium to severe rock conditions.
Extra tread depth helps
cut protection.
An all purpose tire for
bottom and end
dumps, its tread design delivers excellent
forward and lateral
traction. A 100 level
tire allows for high
speed operations for
enhanced productivity.
RL-4B (E-4)
RL-4H (E-4)
RL-4J (E-4)
RL-4L (E-4)
This 150 level tire with
a flat tread radius provides enhanced traction and treadwear in
severe rock conditions. Sidewall protection aided by the
advanced shoulder
buttress.
A 150 level haulage
tire for moderate to
severe rock conditions. The non-directional tread helps offer
excellent treadwear.
An all purpose 150
level high speed
haulage tire. Extended
sidewall reinforcement
helps provide added
cut protection. Enhanced forward and
lateral traction.
Enhanced 150 level
on/off road traction
tire with a high tear
tough tread.
79
EARTHMOVER TIRES
Radial Construction – Haulage Service
RL-4M+ (E-4)
RT-4A (E-4)
RT-4A+ (E-4)
Aggressive extra deep tread
tire for enhanced traction
and long even wear. Buttressed shoulder lugs are
self-cleaning and helps provide extended tread life and
resist sidewall cutting. The
submerged center rib enhances late life tread wear.
This 150 level tire has a
unique geometric lug pattern
which helpfs provide even
pressure distribution, increases mobility and optimizes traction and tread wear.
This rugged tread design
helps provide long, even wear.
The buttressed shoulder lugs
resist sidewall cutting.
This open face tread design
and wide shoulder grooves
are self-cleaning for enhanced traction. The high
tensile steel cord ply helps
provides outstanding toughness and cut resistance.
EARTHMOVER TIRES
Radial Construction – Dozer/Loader Service
AS-3A (L-3)
GP-2B (L-3)
RT-3B (L-3)
This 100 level tire has multiple
groove edges to help provide
superior traction on all surfaces. Specially placed blades
enhance traction on snow and
ice.
Its non-directional tread offers
superb forward and backward
traction along with excellent
mobility. 100 level tire for use
in high THPH applications. A
zig-zag center rib helps to deliver long tread life.
This 115 level tire has a large
belt wire to help provide superior resistance to rock cuts
and penetrations. Large shoulder grooves for excellent self
cleaning and a wide tread
width for enhanced traction
and mobility.
80
EARTHMOVER TIRES
Radial Construction – Dozer/Loader Service
GP-3D (L-3)
RL-2+ (L-3+)
TL-3A+ (L-3+)
Centerline riding lugs offer
good lateral traction, long
wear and a smooth ride. 65
Series profile helps deliver
high flotation, improved stability and reduced ground pressure.
A 125 level tire for loaders that
operate in rough conditions.
The thicker tread helps the tire
wear longer and offer greater
cut resistance than 100 level
tires. Its non-directional tread
helps deliver good forward
and lateral traction.
Wide open lug pattern for enhanced traction and ride. Enhanced groove design for
excellent self cleaning in the
muddy conditions.
GP-4D (L-4)
RL-4K (L-4)
RT-5C (L-5)
The open face tread design
and wide shoulder grooves
are self cleaning for enhanced
traction. The interlocking lug
design helps increase lateral
traction. High tensile steel
cord ply helps to provide outstanding toughness and cut
resistance.
Extra tread 150 level tire for
quarry operations. Excellent
load and carry capability from
the radial construction and
tough tread.
A non-directional heavy duty
tire for abrasive operating conditions. The open face tread design and wide shoulder
grooves are self cleaning for
excellent traction.
81
EARTHMOVER TIRES
Radial construction - Loader/Underground Mine Service
RL-5K (L-5)
A 250 level tire for front end
loaders that operate in very
severe rock conditions above
or below the ground. Wide
shoulder slots provide enhanced traction.
SM-5A (L-5S)
RL-5S (L-5S)
A 250 level tire with a smooth
tread design that helps reduce
lug tearing. It is long wearing
and excellent for hard rock
quarry and underground mine
service.
RL-5K 08/08 (L-5)
Super extra tread design for
severe service. Steel belts help
provide cut and impact resistance.
EARTHMOVER TIRES
Radial Construction – Mobile Crane Service
MC-1A (E-1)
GP-2B (E-3)
AT-2A (E-3)
Tread design optimizes treadwear and minimizes noise and
vibration. Good for on/off
highway application and for
high speed service.
Solid center rib offers enhanced ride and fuel economy.
The non-directional tread design provides enhanced traction and mobility.
On and off road design for mobile crane service. It combines
lateral and circumferential
grooves to help provide enhanced traction in both wet
and dry conditions.
82
EARTHMOVER TIRES
Radial Construction – Grader Service
SG-2B (G-2)
AS-3A (G-3)
RT-3B (G-3)
The SG-2B is a 100 level
grader tire with excellent traction and flotation on soft underfoot conditions. Radial
carcass helps provide lower
running temperatures and enhanced fuel economy.
This 100 level tire has multiple
groove edges to help provide
superior traction on all surfaces. Specially placed blades
enhance traction on snow and
ice.
This 115 level tire has a large
belt wire for superior resistance to rock cuts and penetrations. Large shoulder grooves
for excellent self cleaning and
a wide tread width for enhanced traction and mobility.
RL-2F (G-2)
GP-2B (G-3)
RL-2+ (G-3+)
A 100 level tire for high speed
operation in soft underfoot soil
conditions. Directional tread is
self cleaning and provides enhanced forward traction.
This non-directional tread offers superb forward and backward traction along with
enhanced mobility. A zig-zag
center rib helps to deliver long
tread life.
A 125 level tire for graders
that operate in rough conditions. The thicker tread helps
wear longer and offer greater
cut resistance than 100 level
tires. The non-directional tread
helps deliver good forward
and lateral traction.
83
SECTION IV
Load and Inflations
For Goodyear
Off-the-Road Tires
Index:
Conventional Sizes ............................................................................87-102
Wide Base Sizes ..............................................................................103-115
65 Series Sizes.................................................................................116-117
Metric Sizes .............................................................................................118
Underground Mine Service...............................................................119-121
Drive Away .......................................................................................122-127
84
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) MAXIMUM SPEED COMPACTOR SERVICE
BIAS
7.50-15NHS
6.00-16
7.50-16NHS
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
45
325
3460
1570
2300
1040
3620
1640
50
350
3700
1680
2450
1110
3860
1750
55
400
3900(6)
1770(6)
2600
1180
4080(6)
1850(6)
60
425
4100
1860
2750
1250
4280
1940
65
450
4300
1950
2900
1320
4500
2040
70
475
4500
2040
3000
1360
4680(8)
2120(8)
75
525
4680
2120
3100
1410
4880
2210
80
550
4860
2200
3200(6)
1450(6)
5080
2300
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
11
75
1050
475
1100
500
1320
600
2600
1180
15
100
1230
560
1280
580
1570
710
3090
1400
18
125
1430
650
1480
670
1760
800
3530
1600
22
150
1570
710
1650
750
1980
900
3860
1750
25
175
1710
775
1760
800
2150
975
4300
1950
29
200
1870
850
1930
875
2340
1060
4540
2060
33
225
1980
900
2090
950
2540
1150
4940
2240
36
250
2090
950
2200
1000
2680
1215
5200
2360
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
11
75
1230
560
1280
580
1570
710
3090
1400
15
100
1480
670
1520
690
1870
850
3640
1650
18
125
1650
750
1760
800
2090
950
4080
1850
22
150
1870
850
1930
875
2340
1060
4540
2060
25
175
2040
925
2090
950
2600
1180
5070
2300
29
200
2200
1000
2270
1030
2760
1250
5360
2430
33
225
2340
1060
2470
1120
3000
1360
5840
2650
36
250
2470
1120
2600
1180
3310
1500
6170
2800
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
11
75
1820
825
1870
850
2270
1030
4410
2000
15
100
2150
975
2200
1000
2680
1215
5360
2430
18
125
2470
1120
2540
1150
3090
1400
6010
2725
22
150
2680
1215
2830
1285
3420
1550
6780
3075
25
175
3000
1360
3090
1400
3750
1700
7390
3350
29
200
3200
1450
3310
1500
4080
1850
8050
3650
33
225
3420
1550
3530
1600
4300
1950
8540
3875
36
250
3640
1650
3860
1750
4670
2120
9090
4125
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
9.00-15
9.00-16
11.00-16
16.00-16
85
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
9.00-15
9.00-16
11.00-16
16.00-16
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
9.00-15
9.00-16
11.00-16
16.00-16
85
575
5040
2290
3370
1530
5260
2390
90
625
5200(10)
2360(10)
3500
1590
5440(10)
2470(10)
95
650
5380
2440
3600
1630
5600
2540
100
675
5540
2510
3700
1680
5780
2620
105
725
5700
2590
3800
1720
5940
2690
110
750
5860(12)
2650(12)
3820(8)
1730(8)
6100(12)
2770(12)
125
850
4200(10)
1910(10)
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
12.00R20NHS
BIAS
7.50-20NHS
BIAS
PSI
KPA
LBS
80
550
9900*
98
675
11700
102
700
12000
105
725
12300
109
750
12800
112
775
12800
116
800
13200
120
825
13600**
123
850
13900
127
875
13900
131
900
14300
4500*
5300
5450
5600
5800
5800
6000
6150**
6300
6300
6500
6700
KPA
675
700
725
750
775
800
825
850
875
900
925
950
PSI
LBS
98
6000
KG
2722
KPA
500
PSI
73
102
6150
2790
76
525
105
6400
2903
80
550
109
112
116
120
123
127
131
134
6950L
6950L
7150 L
7400 L
7400L
7600(16)L
83
87
91
94
98
102
105
109
112
116
2903L
575
2994L
600
2994L
625
3084L
650
3153L
675
3153L
700
3243L
725
3357L
775
800
4125L
4125L
4250(16)L
7850(12)
8050
8250
8550
8550(14)
8800
9100L
10.00-20ML
LBS
8050
8250
8550(12)
8800
8800
9100
9350(14)
9650
9900
9900
10200(16)L
8550
8800
9100(12)
9350
9350
9650
9900(14)
10200
10470
10750(16)
9900(12)
10200
10500
10700(14)
11000
11400
11700
12000(16)
12300
12300
86
KG
3650
KG
3875
KG
4500(12)
LBS
LBS
3750
4000
4625
3875(12)
4125(12)
4750
3450
4000
4250
4875(14)
3530(12)
4000
4250
5000
3650
4125
4375
5150
30 MPH50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
PSI
KPA
40
275
44
300
47
325
51
350
54
375
58
400
3750
4250(14)
4500(14)
5300
62
425
3875
4375
4625
5450(16)
65
450
10.00-20ML
LBS
3860
4080(10)
4300
4400
4680(12)
4800
4940
5200(14)
12.00-20NHS
LBS
4800
5080
5360
5520
5840(14)
6000
6150
6400(16)
KG
KG
1750
2180
1850(10)
2300
L Permafoam inflation or special rim required.
1950
2430
2000
2500
2120(12)
2650(14)
2180
2725
2240
2800
2360(14)
2900(16)
3875(14)
4500
4750
5600
69
475
5360
2430
4000
4500
4875(16)
5600
73
500
5520(16)
2500(16)
3447(16)L
750
7600
3450
3357L
9100L
141
975
15200
6900
145
1000
15700
7100
975
6800L
7600
3350
141
6800L
7400
3250
15200***
6900***
6600L
7150
KG
138
138
950
6400L
LBS
12.00-20NHS
14800
KG
9.50-20NHS
11.00-20NHS
134
925
9350(16)L
120
825
149
1025
4625(16)L
12800L
5800L
12800L
5800L
13200L
6000L
13600(20)L 15200(28)L
6150(20)L
6900(28)L
LOAD LIMITS AT COLD INFLATION PRESSURES
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
PSI
KPA
LBS
KG
22
150
3740
1700
25
175
4080
1850
29
200
4400
2000
33
225
4680(10)
2120(10)
PSI
KPA
LBS
KG
LBS
KG
26
180
2920
1325
3460
1570
29
200
3020
1370
3690
1675
32
220
3150
1430
3890
1765
36
250
3550(6)
1610(6)
4210
1910
41
280
3780
1715
4495
2040
44
300
3935(8)
1785(8)
4660(10)
2125(10)
48
330
3980
1800
4915
2230
51
350
4365
1980
5070(12)
2300(12)
54
375
4560(10)
2070(10)
BIAS
14.00-20ML
PSI
KPA
LBS
KG
40
275
5620
2575
45
310
6020
2725
50
345
6400
2900
55
380
6770(G)
3075(G)
60
415
7120
3250
65
450
7470
3350
70
485
7800(H)
3550(H)
75
515
8120
3650
80
550
8430
3875
85
585
8740(J)
4000(J)
90
620
9040
4125
95
655
9320
4250
BIAS
14.00-20NHS
PSI
KPA
LBS
KG
40
275
6600(12)
3000(12)
44
300
6950
3150
47
325
7400
3350
51
350
7600
3450
54
375
8050(16)
3650(16)
58
400
8250
3750
62
425
8550
3875
65
450
8800
4000
69
475
9100(20)
4125(20)
73
500
9370
4250
76
525
9650
4375
80
550
9920(24)
4500(24)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
69
475
13200
6000
44
300
8550
3875
73
500
13900
6300
47
325
8800
4000
76
525
14300
6500
51
350
9350
4250
80
550
14800
6700
54
375
9650(10)
4375(10)
83
575
14800
6700
87
600
15200
6900
91
625
15700(18)
7100(18)
94
650
16100
7300
98
675
16500
7500
102
700
16500(20)
7500(20)
105
725
17100
7750
109
750
17600L
8000L
PSI
KPA
LBS
KPA
11
75
2600
1180
15
100
3090
1400
18
125
3530
1600
22
150
3970
1800
25
175
4300
1950
33
225
4940
2240
36
250
5360(12)
2430(12)
BIAS
13.00-20TG
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD INDUSTRIAL TRACTOR SERVICE
BIAS
10.5-20MPT
12.5-20MPT
50 MPH (80 KM/H) MAXIMUM SPEED OFF-THE-ROAD MINING AND LOGGING SERVICE
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
87
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
14.00-20NHS
13.00-20TG
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
14.00-20
L Permafoam inflation or special rim required.
29
200
4670(10)
2120(10)
100
690
9610(L)
4375(L)
123
850
18700(24)L
8500(24)L
LOAD LIMITS AT COLD INFLATION PRESSURES
55 MPH (90 KM/H) MAXIMUM SPEED HAULAGE SERVICE
RADIAL
14.00R20/21
16.00R20/21
PSI
KPA
LBS
KG
LBS
KG
55
375
6410
2900
8770
3975
60
400
6860
3100
9390
4250
65
450
7300
3300
9990
4525
70
475
7720(G)
3500(G)
10560
4800
75
525
8120
3675
11110
5050
80
550
8510
3850
11650
5275
85
575
8890(H)
4025(H)
12160
5525
90
625
9260
4200
12660
5750
95
650
9610
4350
13150
5975
100
700
9960(J)
4525(J)
13630(L)
6175(L)
105
725
10300
4675
14090
6400
PSI
KPA
LBS
KG
LBS
KG
65
450
8250
3750
10500
4750
69
475
8550*
3875*
11000*
5000*
73
500
8800
4000
11400
5150
76
525
9100
4125
11700
5300
80
550
9350
4250
12000
5450
83
575
9650
4375
12300
5600
87
600
10200
4625
12800
5800
91
625
10500
4750
13200
6000
94
650
10700
4850
13900
6300
98
675
11000
5000
14300
6500
102
700
11400**
5175**
14800**
6700**
PSI
KPA
LBS
KG
LBS
KG
76
525
13200
6000
17600
8000
80
550
13600*
6150*
18200*
8250*
83
575
14300
6500
18700
8500
87
600
14800
6700
19300
8750
91
625
15200
6900
19800
9000
94
650
15700
7100
20400
9250
98
675
16100
7300
21500
9750
102
700
16500
7500
22000
10000
105
725
17100
7750
22700
10300
109
750
17100
7750
22700
10300
112
775
17600
8000
23400
10600
PSI
KPA
LBS
KG
LBS
KG
11
75
3530
1600
4940
2240
15
100
4080
1850
5840
2650
18
125
4670
2120
6780
3075
22
150
5200
2360
7390
3350
25
175
5680
2575
8270
3750
29
200
6170
2800
8820
4000
33
225
6610
3000
9370
4250
36
250
7170
3250
10200
4625
PSI
KPA
LBS
KG
LBS
KG
11
75
4080
1850
6010
2725
15
100
4940
2240
7170
3250
18
125
5510
2500
8050
3650
22
150
6170
2800
9090
4125
25
175
6780
3075
9920
4500
29
200
7380
3350
10750
4875
33
225
7830
3550
11350
5150
36
250
8270
3750
12350
5600
PSI
KPA
LBS
KG
LBS
KG
11
75
6010
2725
7830
3530
15
100
7170
3250
9370
4250
18
125
8050
3650
10750
4875
22
150
9090
4125
12020
5450
25
175
9920
4500
12790
5800
29
200
10750
4875
13890
6300
33
225
11350
5150
15210
6900
36
250
12350
5600
16090
7300
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD SERVICE
RADIAL
14.00R20/21
16.00R20/21
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SERVICE
RADIAL
14.00R20/21
16.00R20/21
88
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
16.00-20
24-20.5
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
16.00-20
24-20.5
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
16.00-20
24-20.5
110
750
10620
4825
14540(M)
6600(M)
115
800
1960(L)
4975(L)
116
800
18200
8250
24000
10900
120
825
18700**
8500**
24700**
11200**
LOAD LIMITS AT COLD INFLATION PRESSURES
55 MPH (90 KM/H) MAXIMUM SPEED HAULAGE SERVICE
RADIAL
14.00R21
16.00R21
PSI
KPA
LBS
KG
LBS
KG
65
450
7300
3310
9990
4530
70
480
7830(G)
3550(G)
10560
4790
75
520
8250
3740
11110
5040
80
550
8670
3930
11650
5280
85
590
9090(H)
4125(H)
12160
5520
90
620
9460
4290
12660
5740
95
660
9830
4460
13150
5960
100
690
10200(J)
4625(J)
13900(L)
6300(L)
105
720
10470
4750
14350
6500
110
760
10740
4880
14800(M)
6700(M)
115
790
11000(L)
5000(L)
PSI
KPA
LBS
KG
LBS
KG
40
275
8800
4000
5520
2500
44
300
9350
4250
5680
2575
47
325
9650(16)
4375(16)
6000
2725
51
350
10200
4625
6150
2800
54
375
10500
4750
6600(14)
3000(14)
58
400
11000(20)
5000(20)
6800
3075
62
425
65
450
69
475
73
500
76
525
80
550
6950
3150
7150(16)
3250(16)
7390
3350
7610
3450
7830
3550
8050(20)
3650(20)
PSI
KPA
LBS
KG
69
475
11000
5000
73
500
11400
5150
76
525
11700
5300
80
550
12000
5450
83
575
12300
5600
87
600
12300
5600
91
625
12800
5800
94
650
13200
6000
98
675
13600(16)
6150(16)
102
700
13600
6150
105
725
13900
6300
109
750
14300L
6500L
PSI
KPA
LBS
KG
LBS
KG
11
75
4940
2240
6390
2900
15
100
5840
2650
7610
3450
18
125
6780
3075
8820
4000
22
150
7390
3350
9650
4375
25
175
8270
3750
10750
4875
29
200
8820
4000
11350
5150
33
225
9370
4250
12350
5600
36
250
10200
4625
13230
6000
PSI
KPA
LBS
KG
LBS
KG
11
75
7830
3550
10200
4625
15
100
9370
4250
12020
5450
18
125
10750
4875
13890
6300
22
150
12020
5450
15210
6900
25
175
12790
5800
17090
7750
29
200
13890
6300
18190
8250
33
225
15210
6900
19290
8750
36
250
16090(12)
7300(12)
20940
9500
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
16.00-21NHS
12.00-24NHS
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
12.00-24NHS
89
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
24-21
27.25-21
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
24-21
27.25-21
L Permafoam inflation or special rim required.
83
575
112
775
14800L
6700L
116
800
14800L
6700L
120
825
15200(20)L
6900(20)L
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
12.00R24NHS
PSI
KPA
LBS
KG
65
450
6400
2900
69
475
6600*
3000*
73
500
6950
3150
76
525
7150
3250
80
550
7400
3350
83
575
7850
3550
87
600
8050
3650
91
625
8250
3750
94
650
8550
3875
98
675
8800
4000
102
700
8800**
4000**
105
725
9100
4125
109
750
9350L
4250L
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
29
200
4080
1850
18
125
3200
1450
3740
1700
33
225
4400
2000
22
150
3520(6)
1600(6)
4180(6)
1900(6)
36
250
4800
2180
25
175
3860
1750
4540(8)
2060(8)
40
275
5200
2360
29
200
4180(8)
1900(8)
4940
2240
44
300
5520
2500
33
225
47
325
5840
2650
36
250
51
350
6150
2800
40
275
54
375
6600*
3000*
5200(10)
2360(10)
5520
2500
5840(12)
2650(12)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
76
525
10700
4875
36
250
7400
3350
51
350
9350
4250
44
300
9350(8)
4250(8)
80
550
11400*
5150*
40
275
7850
3550
54
375
9900
4500
47
325
9900
4500
83
575
11700
5300
44
300
8050
3650
58
400
10500
4750
51
350
10500
4750
87
600
12000
5450
47
325
8550(8)
3875(8)
62
425
11000
5000
54
375
10700(10)
5000(10)
91
625
12300
5600
51
350
94
650
12800
5800
98
675
13200
6000
102
700
13600
6150
105
725
13900
6300
109
750
14300L
6500L
112
775
14300L
6500L
116
800
14800L
6700L
120
825
15200**L
6900**L
65
450
11400
5150
58
400
11400
5150
69
475
12000
5450
62
425
11700
5300
73
500
12300
5600
65
450
12000(12)
5600(12)
76
525
12800
5800
69
475
12300
5600
80
550
13200*
6000*
73
500
12800
5800
76
525
13200(14)
6000(14)
80
550
13600
6150
83
575
13900
6300
87
600
19300(16)
6500(16)
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
RADIAL
13.00R24TG
BIAS
12.00-24TG
13.00-24TG
90
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
12.00R24NHS
BIAS
12.00-24TG
RADIAL
13.00R24TG
BIAS
13.00-24TG
L Permafoam inflation or special rim required.
112
775
9650L
4375L
116
800
9900***L
4500***L
131
900
16100***L
7300***L
55 MPH (90 KM/H) HIGHWAY SERVICE
LOAD LIMITS AT COLD INFLATION PRESSURES
PSI
KPA
LBS
KG
65
450
8150
3700
70
475
8620
3910
75
525
9070
4110
80
550
9500
4310
85
575
9930
4500
90
625
10340
4690
95
650
10730
4870
100
700
11400(J)
5150(J)
105
725
11700
5300
110
750
12000
5450
PSI
KPA
LBS
KG
55
380
7560
3430
60
410
7960
3610
65
450
8340
3780
70
480
8820(H)
4000(H)
75
520
9070
4110
80
550
9410
4270
85
590
9920(J)
4500(J)
90
620
10090
4580
95
660
10410
4720
100
690
11000(L)
5000(L)
PSI
BIAS
KPA
14.00-24/25NHS LBS
KG
PSI
RADIAL
KPA
14.00R24/25NHS LBS
KG
51
350
8550
3875
65
450
8800
4000
54
375
8800(16)
4000(16)
69
475
9100*
4125*
58
400
9350
4250
73
500
9650
4375
62
425
9650
4375
76
525
9900
4500
65
450
9900
4500
80
550
10200
4625
69
475
10200(20)
4625(20)
83
575
10500
4750
73
500
10500
4750
87
600
11000
5000
76
525
10700
4875
91
625
11400
5150
80
550
11000(24)
5000(24)
94
650
11700
5300
83
575
11400
5150
98
675
12000
5450
87
600
11700
5300
102
700
12300**
5600**
91
625
12000
5450
105
725
12300
5600
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
22
150
5080
2300
29
200
4940
2240
25
175
5520
2500
33
225
5360
2430
29
200
5840
2650
36
250
5840
2650
33
225
6150(10)
2800(10)
40
275
6150
2800
36
250
6800(12)
3075(12)
44
300
6600
3000
40
275
7150
3250
47
325
7150
3250
44
300
7600
3450
51
350
7400
3350
47
325
7850
3550
54
375
8050*
3650*
51
350
8050(16)
3650(16)
76
525
15700
7100
47
325
12000
5450
76
525
14800
6700
80
550
16100
7300
51
350
12300(10)
5600(10)
80
550
15200*
6900*
83
575
16500
7500
54
375
13200
6000
83
575
15700
7100
87
600
17100
7750
58
400
13600
6150
87
600
16500
7500
91
625
17600
8000
62
425
13900(12)
6300(12)
91
625
17100
7750
94
650
18200
8250
65
450
14300
6500
94
650
17600
8000
98
675
18200
8250
69
475
14800
6700
98
675
17600
8000
102
700
18700(20)
8500(20)
73
500
15200
6900
102
700
18200
8250
105
725
19300
8750
76
525
15700
7100
105
725
18700
8500
109
750
19300
8750
80
550
16100(16)
7300(16)
109
750
19300
8750
112
775
19800
9000
116
800
20400
9250
112
775
19800
9000
116
800
20400
9250
RADIAL
14.00R24
(385/95R24)
50 MPH (80 KM/H) HIGHWAY SERVICE
BIAS
14.00-24/25ML
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
91
25 MPH (40 KM/H) MAXIMUM SPEED ROAD TRACTOR AND GRADER SERVICE
BIAS
14.00-24TG
RADIAL
14.00R24TG
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
PSI
BIAS
KPA
14.00-24/25NHS LBS
KG
PSI
BIAS
KPA
14.00-24TG
LBS
KG
PSI
RADIAL
KPA
14.00R24/25NHS LBS
KG
L Permafoam inflation or special rim required.
115
800
12300(L)
5600(L)
131
900
13270(M)
6000(M)
94
650
12300(28)
5600(28)
109
750
12800
5800
120
825
20900**
9500**
141
975
13930(N)
6300(N)
112
775
13200
6000
116
800
13600***
6150***
123
850
20900(24)
9500(24)
141
975
22700(28)L
10300(28)L
131
900
22000***L
10000***L
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
16.00-24
18.00-24
BIAS
20-24
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
40
275
9650
4375
12300(16)
5600(16)
29
200
9370(12)
4250(12)
44
300
10200(16)
4625(16)
13200
6000
33
225
47
325
10700
4875
13900
6300
36
250
10750(14)
4875(14)
51
350
11000
5000
14300(20)
6500(20)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
22
150
6600
3000
25
175
5680
2525
PSI
KPA
LBS
44
300
14780
54
375
11700
5300
15200
6900
58
400
12000(20)
5450(20)
15700
7100
25
175
7150
3250
29
200
6400
2900
29
200
7600
3450
33
225
6950
3150
33
225
8050(12)
3650(12)
36
250
7400
3250
36
250
8800
4000
40
275
8050
3650
40
275
9350
4250
44
300
8550
4875
44
300
9900(16)
4500(16)
47
325
9100
4125
51
350
9650
4375
47
325
15700(12)
51
350
16100
54
375
17100
58
400
17600
62
425
18200(16)
65
450
18700
69
475
19300
62
425
16100(24)
7300(24)
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
BIAS
16.00-24TG
92
RADIAL
16.00R24TG
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
16.00-24TG
KG
6700
7100(12)
7300
7750
8000
8250(16)
8500
8750
54
375
10200*
4625*
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
16.00-25
RADIAL
16.00R25
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
40
275
9650
4375
65
450
11400
5150
44
300
10200
4625
69
475
12000*
5450*
46
325
10700
4875
73
500
12300
5600
51
350
11000
5000
76
525
12800
5800
54
375
11700
5300
80
550
13200
6000
58
400
12000(20)
5450(20)
83
575
13900
6300
62
425
12300
5600
87
600
14300
6500
65
450
12800
5800
91
625
14800
6700
69
475
13200(24)
6000(24)
94
650
15200
6900
73
500
13900
6300
98
675
15700
7100
76
525
14300
6500
102
700
16100**
7300**
80
550
14300
6500
83
575
14800(28)
6700(28)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
69
475
19300
8750
116
800
26800
12150
76
525
19300
8750
73
500
19800
9000
120
825
26800
12150
80
550
19800*
9000*
76
525
20400
9250
123
850
27600
12500
83
575
20400
9250
80
550
21500(20)
9750(20)
127
875
27600(32)
12500(32)
87
600
21500
9750
83
575
22000
10000
131
900
28300
12850
91
625
22000
10000
87
600
22000
10000
134
925
29100
13200
94
650
22700
10300
91
625
22700
10300
138
950
29100
13200
98
675
23400
10600
94
650
23400(24)
10600(24)
141
975
30000(36)
13600(36)
102
700
24000
10900
98
675
24000
10900
145
1000
30000
13600
105
725
24700
11200
102
700
24700
11200
149
1025
30900
14000
109
750
25400
11500
105
725
24700
11200
109
750
25400(28)
11500(28)
112
775
26000
11800
116
800
26800
12150
32000(40)L
14500(40)L
120
825
26800**
12150**
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
16.00-25
93
RADIAL
16.00R25
L Permafoam inflation or special rim required.
112
775
26000
11800
94
650
16100(32)
7300(32)
Continued
131
900
29100***
13200***
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
18.00-25
RADIAL
18.00R25
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
40
275
12300(16)
5600(16)
65
450
14800
6700
44
300
13200
6000
69
475
15700*
7100*
47
325
13900
6300
73
500
16100
7300
51
350
14300(20)
6500(20)
76
525
16500
7500
54
375
15200
6900
80
550
17100
7750
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
25
175
8550
3875
36
250
9650
4375
29
200
9100(12)
4125(12)
40
275
10500
4750
33
225
9900
4500
44
300
11000
5000
36
250
11000(16)
5000(16)
47
325
11700
5300
51
350
12300*
5600*
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
69
475
25400(20)
11500(20)
116
800
34200
15500
76
525
24700
11200
73
500
26000
11800
120
825
35300
16000
80
550
26000*
11800*
76
525
26800
12150
123
850
35300(36)
16000(36)
83
575
26800
12150
80
550
27600(24)
12500(24)
127
875
36400
16500
87
600
27600
12500
83
575
28300
12850
131
900
36400
16500
91
625
28300
12850
58
400
15700
7100
83
575
17600
8000
62
425
16100(24)
7300(24)
87
600
18200
8250
65
450
16500
7500
91
625
18700
8500
69
475
17100
7750
94
650
19300
8750
73
500
17600(28)
8000(28)
98
675
19800
9000
76
525
18200
8250
102
700
20400**
9250**
80
550
18700
8500
83
575
19300(32)
8750(32)
94
650
30000(28)
13600(28)
98
675
30900
14000
102
700
32000
14500
105
725
32000
14500
109
750
33100(32)
15000(32)
112
775
33100
15000
102
700
30900
14000
105
725
32000
14500
109
750
33100
15000
112
775
33100
15000
116
800
34200
15500
120
825
35300**
16000**
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
BIAS
18.00-25
RADIAL
18.00R25
94
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
18.00-25
RADIAL
18.00R25
For 18.00-25 Sand Service loads and inflations see page 97
87
600
29100
13200
134
925
37500
17000
94
650
29100
13200
91
625
30000
13600
138
950
37500(40)
17000(40)
98
675
30000
13600
102
700
21500(40)
9750(40)
Continued
131
900
37500***
17000***
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
21.00-25
BIAS
22-25
RADIAL
21.0R25
54
375
19300(24)
8750(24)
58
400
19800
9000
62
425
20900(28)
9500(28)
65
450
21500
9750
69
475
22000
10000
73
500
22700(32)
10300(32)
73
500
20900
9500
51
350
18700
8500
36
250
9660(16)
4380(16)
76
525
22000
10000
80
550
22700
10300
83
575
23400
10600
87
600
24000
10900
91
625
25400
11500
94
650
26000
11800
98
675
26800
12150
102
700
27600**
12500**
123
850
34200
15500
80
550
35300
16000
30000
13600
44
300
15350
7025
87
600
35300
16000
127
875
34200
15500
83
575
36400(28)
16500(28)
30900
14000
47
325
16100
7350
91
625
36400
16500
131
900
35300
16000
87
600
37500
17000
32000(30)
14500(30)
51
350
16850
7675
94
650
37500
17000
134
925
35300
16000
91
625
37500
17000
32000
14500
54
375
17600(16)
8000(16)
98
675
38600
17500
138
950
36400
16500
94
650
38600(32)
17500(32)
33100
15000
141
975
36400
16500
98
675
39700
18000
34200
15500
145
1000
37500
17000
102
700
40800
18500
35300(36)
16000(36)
149
1025
37500
17000
105
725
41900(36)
19000(36)
152
1050
38600(44)
17500(44)
109
750
43000
19500
112
775
43000
19500
36
250
13850
6375
80
550
33100*
15000*
120
825
33100
15000
78
525
34200
15500
29100
13200
40
275
14600(12)
6700(12)
83
575
34200
15500
102
700
39700
18000
105
725
40800
18500
109
750
41900
19000
112
775
4300
19500
116
800
44100
20000
120
825
45400**
20600**
11
75
4940
2240
6390
2900
15
100
5840
2650
7610
3450
18
125
6610
3000
8540
3875
22
150
7390
3350
9650
4375
25
175
8050
3650
10470
4750
29
200
8820
4000
11350
5150
33
225
9370
4250
12020
5450
36
250
9920
4500
12790
5800
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
40
275
16100
7300
25
175
7940(12)
3600(12)
65
450
19800
9050
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
116
800
33100
15000
73
500
33100(24)
15000(24)
PSI
KPA
LBS
KG
LBS
KG
44
300
17100
7750
29
200
47
325
17600
8000
33
225
69
475
20400*
9250*
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
61X18.00-25
95
BIAS
21.00-25
23/90-25
BIAS
22-25
RADIAL
21.00R25
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
1800-25
2100-25
116
800
44100
20000
120
825
45400(40)
20600(40)
131
900
48100***
21800***
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
18.00-33
21.00-35
RADIAL
18.00R33
21.00R33
21.00R35
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
40
275
14300
6500
19300
8750
65
450
17100
7750
22000
10000
22700
10300
44
300
15200
6900
19800
9000
69
475
17600*
8000*
22700*
10300*
23400*
10600*
47
325
16100
7300
20900
9500
73
500
18700
8500
24000
10900
24700
11200
51
350
16500
7500
22000
10000
76
525
19300
8750
24700
11200
25400
11500
54
375
17600
8000
22700
10300
80
550
19800
9000
25400
11500
26000
11800
58
400
18200
8250
24000
10900
83
575
20400
9250
26000
11800
26800
12150
62
425
18700(24)
8500(24)
24700(28)
11200(28)
87
600
21500
9750
27600
12500
28300
12850
65
450
19300
8750
25400
11500
91
625
22000
10000
28300
12850
29100
13200
69
475
19800
9000
26000
11800
94
650
22700
10300
29100
13200
30000
13600
73
500
20400(28)
9250(28)
26800(32)
12150(32)
98
675
23400
10600
30000
13600
30900
14000
76
525
21500
9750
27600
12500
102
700
24000**
10900**
30900**
14000**
32000**
14500**
80
550
22000
10000
28300(36)
12850(36)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
69
475
29100
13200
38600
17500
76
525
29100
13200
37500
17000
38600
73
500
30000
13600
39700
18000
80
550
30000*
13600*
38600*
17500*
39700*
76
525
30900
14000
40800
18500
83
575
30900
14000
39700
18000
40800
80
550
32000(24)
14500(24)
41900
19000
87
600
32000
14500
40800
18500
41900
83
575
33100
15000
43000(28)
19500(28)
91
625
33100
15000
41900
19000
43000
87
600
33100
15000
44100
20000
94
650
34200
15500
43000
19500
44100
91
625
34200
15500
45400
20600
98
675
35300
16000
44100
20000
45400
94
650
35300(28)
16000(28)
46700(32)
21200(32)
102
700
36400
16500
45400
20600
46700
98
675
36400
16500
46700
21200
105
725
36400
16500
46700
21200
48100
102
700
36400
16500
48100
21800
109
750
37500
17000
48100
21800
49400
105
725
37500
17000
49400
22400
112
775
38600
17500
49400
22400
50700
109
750
38600(32)
17500(32)
50700(36)
23000(36)
116
800
39700
18000
50700
23000
52000
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
96
BIAS
18.00-33
21.00-35
RADIAL
18.00R33
21.00R33
21.00R35
KG
17500
18000*
18500
19000
19500
20000
20600
21200
21800
22400
23000
23600
83
575
22700(32)
10300(32)
120
825
40800**
18500**
52000**
23600**
53600**
24300**
87
600
22700
10300
120
825
40800(36)
18600(36)
53600(42)
24000(42)
91
625
23400(36)
10600(36)
131
900
43000***
19500***
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
24.00-35
BIAS
24.00-43
BIAS
18.00-49
21.00-49
97
RADIAL
24.00R35
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
40
275
24700
11200
65
450
36400
16500
40
275
18200
8250
23400
10600
65
450
29100
13200
44
300
26000
11800
69
475
27500(36)
17000(36)
44
300
19300
8750
24000
10900
69
475
30000*
13600*
47
325
26800
12150
73
500
38600
17500
47
325
20400
9250
25400
11500
73
500
30900
14000
51
350
28300
12850
76
525
39700
18000
51
350
20900
9500
26800
12150
76
525
32000
14500
54
375
29100
13200
80
550
40800
18500
54
375
22000
10000
28700
12500
80
550
34200
15500
58
400
30900(30)
14000(30)
83
575
41900(42)
19000(42)
58
400
22700
10300
29100
13200
83
575
35300
16000
62
425
32000
14500
87
600
43000
19500
62
425
23400(24)
10600(24)
30000
13600
87
600
36400
16500
65
450
33100
15000
91
625
44100
20000
65
450
24700
11200
30900
14000
91
625
37500
17000
69
475
34200(36)
15500(36)
94
650
45400(48)
20600(48)
69
475
25400
11500
32000
14500
94
650
38600
17500
73
500
34200
15500
76
525
35300
16000
80
550
36400
16500
83
575
37500(42)
17000(42)
73
500
26000(28)
11800(28)
33100(32)
15000(32)
98
675
39700
18000
76
525
26800
12150
34200
15500
102
700
40800**
18500**
80
550
27600
12500
34200(36)
15500(36)
83
575
28300(32)
12850(32)
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
PSI
KPA
LBS
69
475
49400
22400
37500
17000
46700
21200
76
525
48100
73
500
50700
23000
38600
17500
48100
21800
80
550
50700*
76
525
52000(30)
23600(30)
39700
18000
49400
22400
83
575
53600
80
550
53600
24300
40800(24)
18500(24)
50700
23000
87
600
55100
83
575
55100
25000
41900
19000
52000
23600
91
625
56800
87
600
56800
25750
41900
19000
53600
24300
94
650
58400
91
625
58400
26500
43000
19500
55100
25000
98
675
60000
94
650
58400(36)
26500(36)
44100(28)
20000(28)
55100(32)
25000(32)
102
700
61500
98
675
60000
27250
45400
20600
56800
25750
105
725
64000
102
700
61500
28000
46700
21200
58400
26500
109
750
64000
105
725
64000
29000
46700
21200
60000
27250
112
775
66000
109
750
64000(42)
29000(42)
48100(32)
21800(32)
60000(36)
27250(36)
116
800
66000
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
24.00-35
18.00-49
21.00-49
RADIAL
24.00R35
KG
21800
23000*
24300
25000
25750
26500
27250
28000
29000
29000
30000
30000
120
825
68000**
30750**
131
900
74000***
33600***
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
24.00-49
27.00-49
RADIAL
24.00R49
27.00R49
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
47
325
32000
14500
39700
18000
65
450
34200
15500
43000
19500
51
350
34200
15500
41900
19000
69
475
36400*
16500*
44100*
20000*
54
375
35300
16000
43000
19500
73
500
37500
17000
45400
20600
58
400
36480(30)
16500(30)
45400
20600
76
525
38600
17500
48100
21800
62
425
37500
17000
46700(36)
21200(36)
80
550
40800
18500
49400
22400
65
450
39700
18000
48100
21800
83
575
41900
19000
50700
23000
69
475
40800(36)
18500(36)
49400
22400
87
600
43000
19500
52000
23600
73
500
41900
19000
50700(42)
23000(42)
91
625
44100
20000
55100
25000
76
525
43000
19500
52000
23600
94
650
45400
20600
56800
25750
80
550
44100
20000
53600
24300
98
675
46700
21200
58400
26500
83
575
45400(42)
20600(42)
55100(48)
25000(48)
102
700
48100**
21800**
60000**
27250**
87
600
46700
21200
91
625
48100
21800
94
650
48100(48)
21800(48)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
69
475
58400
26500
71500
32500
76
525
58400
26500
71500
73
500
60000
27250
74000
33500
80
550
60000*
27250*
74000*
76
525
61500(30)
28000(30)
76000
34500
83
575
61500
28000
76000
80
550
64000
29000
78500
35500
87
600
64000
29000
78500
83
575
66000
30000
80500(36)
36500(36)
91
625
66000
30000
82500
87
600
68000
30750
82500
37500
94
650
68000
30750
85500
91
625
69500
31500
85500
38750
98
675
69500
31500
85500
94
650
71500(36)
32500(36)
88000
40000
102
700
71500
32500
88000
98
675
71500
32500
88000(42)
40000(42)
105
725
74000
33500
91000
102
700
74000
33500
91000
41250
109
750
76000
34500
93500
105
725
76000
34500
93500
42500
112
775
78500
35500
96500
109
750
76000(42)
34500(42)
93500
42500
116
800
80500
36500
99000
112
775
123
850
82700(48)
37500(48)
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
24.00-49
98
27.00-49
RADIAL
24.00R49
27.00R49
KG
32500
33500*
34500
35500
37500
38750
38750
40000
41250
42500
43750
45000
96500(48)
43750(48)
120
825
82500**
37500**
99000**
45000**
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
30.00-51
33.00-51
RADIAL
30.00R51
33.00R51
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
40
275
44100
20000
52000
23600
65
450
52000
23600
60000
27250
44
300
46700
21200
53600
24300
69
475
55100*
25000*
64000*
29000*
47
325
49400
22400
56800
25750
73
500
56800
25750
66000
30000
51
350
50700
23000
60000
27250
76
525
58400
26500
68000
30750
54
375
53600
24300
61500
28000
80
550
61500
28000
71500
32500
58
400
55100
25000
64000
29000
83
575
64000
29000
74000
33500
62
425
56800
25750
66000
30000
87
600
66000
30000
76000
34500
65
450
60000
27250
69500
31500
91
625
68000
30750
78500
35500
69
475
61500
28000
71500
32500
94
650
69500
31500
80500
36500
73
500
64000(46)
29000(46)
74000(50)
33500(50)
98
675
71500
32500
82500
37500
76
525
64000
29000
76000
34500
102
700
74000**
33500**
85500**
38750**
80
550
66000(52)
30000(52)
78500
35500
78500(58)
35500(58)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
69
475
88000
40000
104500
47500
76
525
88000
40000
102000
46250
73
500
91000
41250
107500
48750
80
550
91000*
41250*
107500*
48750*
76
525
93500
42500
110000
50000
83
575
93500
42500
110000
50000
80
550
96500
43750
113500
51500
87
600
99000
45000
113500
51500
83
575
99000
45000
117000
53000
91
625
100000
46250
117000
53000
87
600
102000
46250
120000
54500
94
650
104500
47500
120000
54500
91
625
104500
47500
120000
54500
98
675
107500
48750
123500
56000
94
650
107500(46)
48750(46)
123500(50)
56000(50)
102
700
110000
50000
128000
58000
98
675
110000
50000
128000
58000
105
725
113500
51500
132500
60000
102
700
113500
51500
128000
58000
109
750
117000
53000
132500
60000
105
725
113500
51500
132500
60000
112
775
120000
54500
139000
63000
109
750
117000(52)
53000(52)
135500(58)
61500(58)
116
800
120000
54500
139000
63000
120
825
123500**
56000**
143500**
65000**
PSI
KPA
LBS
11
75
24700
15
100
29100
18
125
33100
22
150
37500
25
175
40800
29
200
44100
33
225
46700
36
250
50700
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
30.00-51
99
33.00-51
RADIAL
30.00R51
33.00R51
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
36.00-51
KG
11200
13200
15000
17000
18500
20000
21200
23000
83
575
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
36.00-51
40.00-57
RADIAL
36.00R51
39/90R53
37.00R57
40.00R57
44/95R57
45R57
100
46/90R57
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
40
275
61500
28000
80500
36500
65
450
74000
33500
74000
33500
82500
37500
93500
42500
96500
43750
93500
42500
99000
45000
44
300
66000
30000
85500
38750
69
475
78500*
35500*
78500*
35500*
85500*
38750*
99000*
45000*
102000
46250
99000*
45000*
104500*
47500*
47
325
69500
31500
88000
40000
73
500
80500
36500
80500
36500
88000
40000
102000
46250
104500
47500
102000
46250
107500
48750
51
350
71500
32500
91000
41250
76
525
82500
37500
82500
37500
91000
41250
107500
48750
110000
50000
107500
48750
113500
51500
54
375
76000(42)
34500(42)
96500
43750
80
550
85500
38750
85500
38750
96500
43750
110000
50000
113500
51500
110000
50000
117000
53000
58
400
78500
35500
99000
45000
83
575
88000
40000
88000
40000
99000
45000
113500
51500
117000
53000
113500
51500
120000
54500
62
425
80500
36500
102000
46250
87
600
91000
41250
91000
41250
102000
46250
117000
53000
120000
54500
117000
53000
123500
56000
65
450
82500(50)
37500(50)
107500
48750
91
625
93500
42500
93500
42500
104500
47500
120000
54500
123500
56000
120000
54500
128000
58000
69
475
85500
38750
110000(60)
50000(60)
94
650
96500
43750
96500
43750
107500
48750
123500
56000
128000
58000
123500
56000
132500
60000
73
500
88000
40000
113500
51500
98
675
99000
45000
99000
45000
110000
50000
128000
58000
132500
60000
128000
58000
135500
61500
76
525
91000(58)
41250(58)
117000
53000
102
700
102000**
46250**
102000**
46250**
113500**
51500**
132500**
60000**
135500**
61500**
132500**
60000**
139000**
63000**
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
69
475
128000(42)
58000(42)
161000
73000
76
525
123500
56000
123500
56000
132500
60000
161000
73000
161000
73000
165500
75000
73
500
128000
58000
165500
75000
80
550
128000*
58000*
128000*
58000*
135500*
61500*
165500*
75000*
165500*
75000*
171000*
77500*
76
525
132500
60000
171000
77500
83
575
132500
60000
132500
60000
139000
63000
171000
77500
171000
77500
176500
80000
80
550
139000
63000
176500
80000
87
600
139000
63000
139000
63000
143500
65000
176500
80000
176500
80000
182000
82500
83
575
143500
65000
182000
82500
91
625
143500
65000
143500
65000
147500
67000
182000
82500
182000
82500
187500
85000
87
600
143500(50)
65000(50)
182000
82500
94
650
147500
67000
147500
67000
152000
69000
187500
85000
187500
85000
193000
87500
91
625
147500
67000
187500
85000
98
675
152000
69000
152000
69000
156500
71000
193000
87500
193000
87500
198500
90000
94
650
153000
69000
193000(60)
87500(60)
102
700
156500
71000
156500
71000
161000
73000
198500
90000
198500
90000
204000
92500
98
675
156500(58)
71000(58)
198500
90000
105
725
161000
73000
161000
73000
165500
75000
204000
92500
204000
92500
209400
95000
102
700
105
725
204000
92500
109
750
165500
75000
165500
75000
171000
77500
209400
95000
209400
95000
215000
97500
204000(68)
92500(68)
112
775
165500
75000
165500
75000
176500
80000
215000
97500
215000
97500
220500
100000
5 MPH (10 KM/H) OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
36.00-51
40.00-57
RADIAL
36.00R51
39/90R53
37.00R57
40.00R57
45R57
46/90R57
Consult manufacturer for operating recommentations.
80
550
83
575
120000(68)
54500(68)
105
725
109
750
135500
61500
139000
63000
116
800
171000
77500
171000
77500
176500
80000
220500
100000
220500
100000
220500
100000
120
825
176500**
80000**
176500**
80000**
182000**
82500**
220500**
100000**
220500**
100000**
227000**
103000**
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
15.5-25
17.5-25
RADIAL
15.5R25
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
25
175
5680(8)
2575(8)
6800
3075
40
275
6150
2800
29
200
6150
2800
7400
3350
44
300
6600
3000
33
225
6600
3000
8050(12)
3650(12)
47
325
6950
3150
36
250
7150(12)
3250(12)
8550
3875
51
350
7400
3350
40
275
44
300
47
325
51
350
54
375
58
400
8800
4000
54
375
7850*
3550*
9350(16)
4250(16)
58
400
8050
3650
9900
4500
62
425
8550
3875
10200
4625
65
450
8800
4000
10700
4875
69
475
9350
4250
11000(20)
5000(20)
73
500
9650
4375
76
525
9900**
4500**
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
22
150
4300(8)
1950(8)
5200
2360
25
175
4400
2000
25
175
4800(10)
2180(10)
5680
2575
29
200
4800
2180
29
200
5200
2360
6400(12)
2900(12)
33
225
5200
2360
33
225
5520
2580
6600(14)
3000(14)
36
250
5680
2575
36
250
5840(12)
2650(12)
6950
3150
40
275
6150
2800
40
275
44
300
47
325
7400(16)
3350(16)
44
300
6600*
3000*
7850
3550
8050(20)
3650(20)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
33
225
8800
4000
10500
4750
29
200
6600
3000
80
550
13900
36
250
9350(8)
4250(8)
11000
5000
33
225
7150
3250
83
575
14300
40
275
9900
4500
11700
5300
36
250
7600
3450
87
600
14800
44
300
10500
4750
12300
5600
40
275
8250
3750
91
625
15200
47
325
10700(10)
4875(10)
12800
5800
44
300
8800
4000
94
650
15700**
51
350
11400
5150
13600(12)
6150(12)
47
325
9350
4250
54
375
11700
5300
13900
6300
51
350
9900
4500
62
425
65
450
69
475
73
500
76
525
80
550
83
575
15200
6900
58
400
11000
5000
15700
7100
62
425
11400
5150
16100(16)
7300(16)
65
450
12000
5450
16500
7500
69
475
12300
5600
17100
7750
73
500
12800*
5800*
17600
8000
76
525
13600
6150
18200(20)
8250(20)
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
BIAS
15.5-25
101
17.5-25
RADIAL
15.5R25
5 MPH (10KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
15.5-25
17.5-25
RADIAL
15.5R25
KG
6300
6500
6700
6900
7100**
58
400
12300(12)
5600(12)
14800(14)
6700(14)
54
375
10500
4750
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
17.5R25
PSI
KPA
LBS
KG
40
275
7400
3350
44
300
7850
3550
47
325
8250
3750
51
350
8800
4000
54
375
9100*
4125*
58
400
9650
4375
62
425
10200
4625
65
450
10500
4750
69
475
11000
5000
73
500
11400
5150
76
525
12000**
5450**
RADIAL
17.5R25
PSI
KPA
LBS
KG
29
200
6800
3075
33
225
7400
3350
36
250
8050
3650
40
275
8550
3875
44
300
9100*
4125*
47
325
9650
4375
51
350
10200
4625
54
375
10700
4875
58
400
11400
5150
62
425
12000**
5450**
65
450
12300
5600
RADIAL
17.5R25
PSI
KPA
LBS
KG
25
175
5200
2360
29
200
5680
2575
33
225
6400
2900
36
250
6800
3075
40
275
7400
3350
44
300
8050*
3650*
BIAS
17.5R25
PSI
KPA
LBS
KG
29
200
8050
3650
33
225
8800
4000
36
250
9350
4250
40
275
10200
4625
44
300
10700
4850
47
325
11700
5300
54
375
12800
5800
58
400
13200
6000
62
425
13600
6150
65
450
14300
6500
PSI
KPA
LBS
80
550
16500
83
575
17100
87
600
17600
91
625
18200
94
650
18700**
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATE DUMP SERVICE
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
102
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
KG
7500
7750
8000
8250
8500**
51
350
12300
5600
116
800
22000***
10000***
69
475
14800
6700
73
500
15700*
7100*
76
525
16100
7300
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
20.5R25
PSI
KPA
LBS
KG
40
275
9650
4375
44
300
10500
4750
47
325
11000
5000
51
350
11700
5300
54
375
12300*
5600*
58
400
12800
5800
62
425
13600
6150
65
450
14300
6500
69
475
14800
6700
73
500
15200
6900
76
525
16100**
7300**
RADIAL
20.5R25
PSI
KPA
LBS
KG
29
200
8800
4000
33
225
9650
4375
36
250
10500
4750
40
275
11000
5000
44
300
12000
5450
47
325
12800*
5800*
51
350
13200
6000
54
375
13900
6300
58
400
14800
6700
62
425
15200
6900
65
450
16100**
7300**
RADIAL
20.5R25
PSI
KPA
LBS
KG
25
175
6950
3150
29
200
7600
3450
33
225
8550
3825
36
250
9100
4125
40
275
9650
4375
44
300
10200*
4625*
PSI
KPA
LBS
KG
PSI
KPA
LBS
29
200
10500
4750
80
550
22000
33
225
11400
5150
83
575
22700
36
250
12300
5600
87
600
24000
40
275
13200
6000
91
625
24700
44
300
13900
6300
94
650
25400**
47
325
14800
6700
54
375
16500
7500
58
400
17600
8000
62
425
18200
8250
65
450
19300
8750
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATED DUMP SERVICE
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
103
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
20.5R25
KG
10000
10300
10900
11200
11500**
51
350
15700
7100
69
475
19800
9000
73
500
20900*
9500*
76
525
21500
9750
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
20.5-25
PSI
KPA
LBS
KG
25
175
9100
4125
29
200
9900(12)
4500(12)
33
225
10700
4875
36
250
11400
5150
40
275
12000(16)
5450(16)
44
300
12800
5800
BIAS
20.5-25
PSI
KPA
LBS
KG
22
150
6950
3150
25
175
7850(12)
3550(12)
29
200
8250
3750
33
225
8800(16)
4000(16)
36
250
9350
4250
40
275
9900(20)
4500(20)
PSI
KPA
LBS
33
225
13900
36
250
14800(12)
40
275
15700
44
300
16500
47
325
17100
51
350
18200(16)
47
325
13200(20)
6000(20)
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
20.5-25
KG
6300
6700(12)
7100
7500
7750
8250(16)
54
375
18700
8500
58
400
19300
8750
62
425
20400
9250
65
450
20900(20)
9500(20)
69
475
21500
9750
73
500
22000
10000
76
525
22700(24)
10300(24)
104
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
23.5R25
PSI
KPA
LBS
KG
40
275
12300
5600
44
300
13200
6000
47
325
14300
6500
51
350
14800
6700
54
375
15700*
7100*
58
400
16500
7500
62
425
17100
7750
65
450
18200
8250
69
475
18700
8500
73
500
19800
9000
76
525
20400**
9250**
RADIAL
23.5R25
PSI
KPA
LBS
KG
29
200
11000
5000
33
225
12000
5450
36
250
13200
6000
40
275
13900
6300
44
300
14800
6700
47
325
16100*
7300*
51
350
16500
7500
54
375
17600
8000
58
400
18700
8500
62
425
19300
8750
65
450
20400**
9250**
RADIAL
23.5R25
PSI
KPA
LBS
KG
25
175
8800
4000
29
200
9900
4500
33
225
10700
4875
36
250
11700
5300
40
275
12300
5600
44
300
13200*
6000*
PSI
KPA
LBS
KG
PSI
KPA
LBS
29
200
13200
6000
80
550
28300
33
225
14300
6500
83
575
29100
36
250
15700
7100
87
600
30000
40
275
17100
7750
91
625
30900
44
300
18200
8250
94
650
32000**
47
325
19300
8750
54
375
21500
9750
58
400
22700
10300
62
425
23400
10600
65
450
24700
11200
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATED DUMP SERVICE
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
105
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
23.5R25
KG
12850
13200
13600
14000
14500**
51
350
20400
9250
69
475
25400
11500
73
500
26800*
12150*
76
525
27600
12500
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
23.5-25
PSI
KPA
LBS
KG
25
175
11700(12)
5300(12)
29
200
12800
5800
33
225
13600(16)
6150(16)
36
250
14300
6500
40
275
15200
6900
BIAS
23.5-25
PSI
KPA
LBS
KG
22
150
8800(12)
4000(12)
25
175
9650
4375
29
200
10500(16)
4750(16)
33
225
11400
5150
36
250
12000(20)
5450(20)
PSI
KPA
LBS
KG
PSI
KPA
LBS
33
225
17600(12)
8000(12)
80
550
30000(28)
36
250
18700
8500
83
575
30900
40
275
19800
9000
87
600
32000
44
300
20900(16)
9500(16)
91
625
32000(32)
47
325
22000
10000
94
650
33100
44
300
16100(20)
7300(20)
47
325
17100
7750
51
350
17600(24)
8000(24)
54
375
24000(20)
10900(20)
102
700
34200(36)
58
400
24700
11200
105
725
35300
25 MPH (40 KM/H) MAXIMUM SPEED OFF-THE-ROAD TRACTOR AND GRADER SERVICE
5 MPH (10 KM/H) MAXIMUM OFF-THE-ROAD SLOW SPEED SERVICE
BIAS
23.5-25
106
KG
13600(28)
14000
14500
14500(32)
15000
51
350
23400
10600
98
675
34200
15500
15500(36)
16000
62
425
26000
11800
109
750
36400
16500
65
450
26800
12150
112
775
36400(40)
16500(40)
69
475
27600(24)
12500(24)
73
500
28300
12850
76
525
29100
13200
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
26.5R25
BIAS
26.5-25
PSI
KPA
LBS
KG
PSI
KPA
LBS
40
275
15700
7100
25
175
14800
44
300
16500
7500
29
200
16100
47
325
17600
8000
33
225
17100
51
350
18700
8500
36
250
18200(20)
54
375
19800*
9000*
40
275
19300
58
400
20900
9500
44
300
20400(24)
62
425
21500
9750
47
325
20900(26)
65
450
22700
10300
51
350
22000(28)
107
BIAS
26.5-25
76
525
25400**
11500**
6700
7300
7750
8250(20)
8750
9250(24)
9500(26)
10000(28)
PSI
KPA
LBS
KG
29
200
13900
6300
33
225
15200
6900
36
250
16500
7500
40
275
17600
8000
44
300
18700
8500
47
325
19800*
9000*
51
350
20900
9500
54
375
22000
10000
58
400
23400
10600
62
425
24000
10900
65
450
25400**
11500**
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
29
200
16500
7500
80
550
35300
16000
33
225
22000(14)
33
225
18200
8250
83
575
36400
16500
36
250
24000
36
250
19800
9000
87
600
37500
17000
40
275
25400
40
275
20900
9500
91
625
39700
18000
44
300
26800
44
300
22700
10300
94
650
40800**
18500**
47
325
27600
47
325
24000
10900
51
350
25400
11500
116
800
46700***
21800***
54
375
30000
54
375
26800
12150
58
400
28300
12850
62
425
29100
13200
65
450
30900
14000
69
475
32000
14500
73
500
33100*
15000*
76
525
34200
15500
58
400
30900(24)
62
425
32000
65
450
33100(26)
69
475
34200(28)
73
500
35300
76
525
36400
80
550
37500(32)
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
26.5R25
73
500
24700
11200
KG
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATED DUMP SERVICE
RADIAL
26.5R25
69
475
23400
10600
KG
10000(14)
10900
11500
12150
12500
51
350
29100(20)
13200(20)
13600
14000(24)
14500
15000(26)
15500(28)
16000
16500
17000(32)
continued
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
29.5R25
BIAS
29.5-25
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
40
275
18700
8500
25
175
17600
8000
44
300
20400
9250
29
200
19300
8750
47
325
21500
9750
33
225
20400
9250
51
350
22700
10300
36
250
22000(22)
10000(22)
54
375
24000*
10900*
40
275
23400
10600
58
400
25400
11500
44
300
24000
10900
62
425
26000
11800
47
325
25400(28)
11500(28)
65
450
27600
12500
51
350
26800
12150
69
475
28300
12850
54
375
27600
12500
73
500
30000
13600
58
400
29100(34)
13200(34)
76
525
30900**
14000**
PSI
KPA
LBS
KG
29
200
16500
7500
33
225
18200
8250
36
250
19800
9000
40
275
20900
9500
44
300
22700
10300
47
325
24000*
10900*
51
350
25400
11500
54
375
26800
12150
58
400
28300
12850
62
425
29100
13200
65
450
30900**
14000**
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
58
400
34200
15500
33
225
26800
12150
62
425
35300
16000
36
250
28300(16)
12850(16)
65
450
37500
17000
40
275
30000
13600
69
475
38600
17500
44
300
32000
14500
73
500
39700*
18000*
47
325
33100(22)
15000(22)
76
525
41900
19000
51
350
35300
16000
80
550
43000
19500
54
375
36400
16500
83
575
44100
20000
58
400
37500
17000
87
600
45400
20600
62
425
38600(28)
17500(28)
91
625
46700
21200
65
450
40800
18500
94
650
49400**
22400**
69
475
41900
19000
PSI
KPA
LBS
KG
11
75
8540
3875
15
100
10200
4625
18
125
11680
5300
22
150
12790
5800
25
175
14330
6500
29
200
15210
6900
33
225
16530
7500
36
250
17640
8000
PSI
KPA
LBS
11
75
10470
15
100
12350
18
125
13890
22
150
15650
25
175
17090
29
200
18190
33
225
19840
36
250
20940
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATED DUMP SERVICE
RADIAL
29.5R25
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
108
RADIAL
29.5R25
BIAS
29.5-25
40 MPH (65 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
29.5-25
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD SAND SERVICE
BIAS
29.5-25
KG
4750
5600
6300
7100
7750
8250
9000
9500
73
500
43000
19500
116
800
56800***
25750***
76
525
44100(34)
20000(34)
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
26.5R29
BIAS
26.5-29
29.5-29
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
40
275
16500
7500
25
175
15700
7100
18700
8500
44
300
17600
8000
29
200
17100
7750
20400
9250
47
325
18700
8500
33
225
18200
8250
22000
10000
51
350
19800
9000
36
250
19300
8750
23400(22)
10600(22)
54
375
20900*
9500*
40
275
20400(22)
9250(22)
24700
11200
58
400
22000
10000
44
300
21500
9750
26000
11800
62
425
23400
10600
47
325
22700(26)
10300(26)
26800(28)
12150(28)
65
450
24000
10900
51
350
69
475
25400
11500
54
375
73
500
26000
11800
58
400
28300
12850
29100
13200
30900(34)
14000(34)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
58
400
30000
13600
33
225
24000
10900
28300
62
425
30900
14000
36
250
25400
11500
30900
65
450
33100
15000
40
275
26800
12150
32000
69
475
34200
15500
44
300
28300
12850
34200
73
500
35300*
16000*
47
325
30000
13600
35300(22)
76
525
36400
16500
51
350
30900
14000
37500
80
550
38600
17500
54
375
32000(22)
14500(22)
38600
83
575
39700
18000
58
400
33100
15000
39700
87
600
40800
18500
62
425
34200
15500
41900(28)
91
625
41900
19000
65
450
35300(26)
16000(26)
43000
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
26.5R29
109
BIAS
26.5-29
29.5-29
KG
12850
14000
14500
15500
16000(22)
17000
17500
18000
19000(28)
19500
76
525
27600**
12500**
94
650
43000**
19500**
69
475
37500
17000
44100
20000
73
500
38600
17500
45400
20600
76
525
39700(30)
18000(30)
46700(34)
21200(34)
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
29.5R29
33.25R29
BIAS
33.25-29
33.5-33
37.5-33
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
40
275
20400
9250
24700
11200
25
175
22700
10300
25400
11500
30900
14000
44
300
21500
9750
26800
12150
29
200
24700
11200
27600
12500
33100
15000
47
325
22700
10300
28300
12850
33
225
26800
12150
29100
13200
35300
16000
51
350
24000
10900
30000
13600
36
250
28300
12850
30900
14000
37500
17000
54
375
25400*
11500*
30900*
14000*
40
275
30000(26)
13600(26)
33100
15000
39700(30)
18000(30)
58
400
26800
12150
33100
15000
44
300
30900
14000
35300
16000
41900
19000
62
425
27600
12500
34200
15500
47
325
33100(32)
15000(32)
36400(32)
16500(32)
44100(36)
20000(36)
65
450
29100
13200
36480
16500
51
350
69
475
30000
13600
37500
17000
54
375
73
500
32000
14500
38600
17500
58
400
38600
17500
45500
20600
39700
18000
48100
21800
40800(38)
18500(38)
49400(42)
22400(42)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
58
400
36400
16500
44100
20000
33
225
35300
16000
44
300
45400
20600
33
225
46700
62
425
37500
17000
46700
21200
36
250
37500
17000
47
325
48100
21800
36
250
49400
65
450
39700
18000
48100
21800
40
275
38600(20)
17500(20)
51
350
49400
22400
40
275
52000
69
475
40800
18500
50700
23000
44
300
40800
18500
54
375
52000
23600
44
300
55100
73
500
43000*
19500*
52000*
23600*
47
325
43000
19500
58
400
53600
24300
47
325
56800
76
525
44100
20000
53600
24300
51
350
45400(26)
20600(26)
62
425
56800(32)
25750(32)
51
350
60000
80
550
45400
20600
56800
25750
54
375
46700
21200
65
450
58400
26500
54
375
61500(30)
83
575
46700
21200
58400
26500
58
400
48100
21800
69
475
60000
27250
58
400
64000
87
600
49400
22400
60000
27250
62
425
50700
23000
73
500
61500
28000
62
425
68000
91
625
50700
23000
61500
28000
65
450
52000(32)
23600(32)
76
525
64000(38)
29000(38)
65
450
69500(36)
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
110
RADIAL
29.5R29
33.25R29
BIAS
33.25-29
BIAS
33.5-33
BIAS
37.5-33
KG
21200
22400
23600
25000
25750
27250
28000(30)
29000
30750
31500(36)
76
525
33100**
15000**
40800**
18500**
94
650
52000**
23600**
64000**
29000**
80
550
66000
30000
69
475
71500
32500
83
575
66000
30000
73
500
74000
33500
87
600
68000(44)
30750(44)
76
525
76000(42)
34500(42)
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
BIAS
29.5-35
33.25-35
RADIAL
33.25R35
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
25
175
20400
9250
24700
11200
40
275
26800
12150
29
200
22000
10000
26800
12150
44
300
28300
12850
33
225
24000
10900
28300
12850
47
325
30900
14000
36
250
25400
11500
30900
14000
51
350
32000
14500
40
275
26800
12150
32000
14500
54
375
34200*
15500*
44
300
28300
12850
34200
15500
58
400
35300
16000
47
325
30000(28)
13600(28)
35300(32)
16000(32)
62
425
37500
17000
51
350
30900
14000
37500
17000
65
450
38600
17500
54
375
32000
14500
38600
17500
69
475
40800
18500
58
400
33100(34)
15000(34)
39700(38)
18000(38)
73
500
41900
19000
62
425
65
450
69
475
73
500
76
525
41900
19000
76
525
44100**
20000**
43000
19500
44100
20000
45400
20600
46700(50)
21200(50)
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
58
400
48100
21800
33
225
30900
14000
37500
62
425
50700
23000
36
250
33100
15000
39700
65
450
53600
24300
40
275
35300
16000
41900(20)
69
475
55100
25000
44
300
37500
17000
44100
73
500
56800*
25750*
47
325
38600
17500
46700
76
525
58400
26500
51
350
40800
18500
49400(26)
80
550
61500
28000
54
375
41900
19000
50700
83
575
64000
29000
58
400
44100
20000
53600
87
600
66000
30000
62
425
45400(28)
20600(28)
55100
91
625
68000
30750
65
450
46700
21200
56800(32)
94
650
69500**
31500**
69
475
48100
21800
58400
73
500
49400
22400
60000
76
525
50700(34)
23000(34)
61500(38)
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
33.25R35
111
BIAS
29.5-35
33.25-35
KG
17000
18000
19000(20)
20000
21200
22400(26)
23000
24300
25000
25750(32)
26500
27250
28000(38)
102
700
74000(50)
33500(50)
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
37.25R35
37.5R39
BIAS
37.25-35
37.5-39
PSI
KPA
LGS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
40
275
32000
14500
35300
16000
25
175
30000
13600
33100
15000
44
300
34200
15500
37500
17000
29
200
32000
14500
35300
16000
47
325
36400
16500
39700
18000
33
225
34200
15500
37500
17000
51
350
38600
17500
41900
19000
36
250
36400
16500
40800
18500
54
375
40800*
18500*
44100*
20000*
40
275
38600(30)
17500(30)
43000
19500
58
400
43000
19500
46700
21200
44
300
40800
18500
45400
20600
62
425
45400
20600
48100
21800
47
325
43000(36)
19500(36)
47000(36)
21200(36)
65
450
46700
21200
50700
23000
51
350
44100
20000
49400
22400
69
475
49400
22400
52000
23600
54
375
46800
21200
50700
23000
73
500
50700
23000
55100
25000
58
400
48100(42)
21800(42)
53600(44)
24300(44)
76
525
52000**
23600**
56800**
25750**
62
425
65
450
69
475
55100
25000
56800
25750
58400(52)
26500(52)
PSI
KPA
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
58
400
58400
26500
61500
28000
33
225
45400
20600
44
300
58400
62
425
60000
27250
66000
30000
36
250
48100
21800
47
325
61500
65
450
64000
29000
68000
30750
40
275
50700
23000
51
350
64000
69
475
66000
30000
71500
32500
44
300
53600
24300
54
375
68000
73
500
68000*
30750*
74000*
33500*
47
325
56800
25750
58
400
69500
76
525
71500
32500
76000
34500
51
350
58400
26500
62
425
71500
80
550
74000
33500
78500
35500
54
375
61500(30)
28000(30)
65
450
74000(36)
83
575
76000
34500
82500
37500
58
400
64000
29000
69
475
76000
87
600
78500
35500
85500
38750
62
425
66000
30000
73
500
78500
91
625
80500
36500
88000
40000
65
450
68000(36)
30750(36)
76
525
82500
94
650
82500**
37500**
91000**
41250**
69
475
69500
31500
80
550
82500(44)
73
500
71500
32500
83
575
85500
76
525
74000(42)
33500(42)
87
600
88000
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
112
RADIAL
37.25R35
37.5R39
BIAS
37.25-35
BIAS
37.5-39
KG
26500
28000
29000
30750
31500
32500
33500(36)
34500
35500
37500
37500(44)
38750
40000
91
625
91000
41250
94
650
93500(52)
42500(52)
LOAD LIMITS AT COLD INFLATION PRESSURES
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD HAULAGE SERVICE
RADIAL
40.5/75R39
BIAS
37.5-51
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
40
275
39700
18000
25
175
37500
17000
44
300
41900
19000
29
200
39700
18000
47
325
45400
20600
33
225
43000
19500
51
350
48100
21800
36
250
45400
20600
54
375
49400*
22400*
40
275
48100
21800
58
400
52000
23600
44
300
50700
23000
62
425
55100
25000
47
325
53600(36)
24300(36)
65
450
56800
25750
51
350
55100
25000
69
475
60000
27250
54
375
58400
26500
73
500
61500
28000
58
400
60000(44)
27250(44)
76
525
64000**
29000**
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
58
400
71500
32500
44
300
64000
29000
66000
30000
107500
48750
128000
58000
128000
58000
135500
61500
62
425
74000
33500
47
325
66000(34)
30000(34)
69500
31500
113500
51500
132500
60000
135500
61500
139000
63000
65
450
78500
35500
51
350
69500
31500
74000
33500
117000
53000
139000
63000
139000
63000
147500
67000
69
475
80500
36500
54
375
71500
32500
76000
34500
123500(40)
56000(40)
143500
65000
147500
67000
152000
69000
73
500
82500*
37500*
58
400
74000
33500
78500
35500
128000
58000
152000(44)
69000(44)
152000(44)
69000(44)
161000(44)
73000(44)
76
525
88000
40000
62
425
78500
35500
82500
37500
132500
60000
156000
71000
156500
71000
165500
75000
80
550
91000
41250
65
450
80500
36500
85500(36)
38750(36)
135500(48)
61500(48)
161000
73000
161000
73000
171000
77500
83
575
93500
42500
69
475
82500(42)
37500(42)
88000
40000
139000
63000
165000
75000
165500
75000
176500
80000
87
600
96500
43750
73
500
85500
38750
91000
41250
143500(54)
65000(54)
171000
77500
171000
77500
182000
82500
91
625
99000
45000
76
525
88000
40000
93500
42500
147500
67000
176500
80000
176500
80000
187500
85000
94
650
102000**
46250**
80
550
91000
41250
93500(44)
42500(44)
152000
69000
182000(60)
82500(60)
182000(60)
82500(60)
193000
87500
5 MPH (10 KM/H) MAXIMUM SPEED OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
40.5/75R39
113
BIAS
41.25/70-39
37.5-51
49/75-51
49.5-57
50/80-57
52/80-57
83
575
87
600
94
650
102
700
156500(62)
71000(62)
187500
85000
187500
85000
198500
90000
161000
73000
187500
85000
193000
87500
204000(68)
92500(68)
171000(68)
77500(68)
193000(68)
87500(68)
198500(68)
90000(68)
176500(74)
80000(74)
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) MAXIMUM OFF-THE-ROAD SLOW SPEED SERVICE
RADIAL
25/55R25
550/65R25
(22/65R25)
600/65R25
25/65R25
650/65R25
114
750/65R25
(30/65R25)
775/65R29
(800/65R29)
30/65R29
875/65R29
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
58
400
17600
8000
16500
7500
19300
8750
19800
9000
22000
10000
30000
13600
33100
14500
30900
14000
40800
18500
62
425
18700
8500
17600
8000
19800
9000
20400
9500
23400
10600
30900
14000
34200
15500
32000
14500
43000
19500
65
450
19300
8750
18200
8250
20900
9500
21500
9750
24000
10900
33100
15000
35300
16000
34200
15500
44100
20000
69
475
20400*
9250*
18700*
8500*
21500*
9750*
22700*
10300*
25400*
11500*
34200*
15500*
37500*
17000*
35300*
16000*
46700*
21200*
73
500
76
525
80
550
83
575
87
600
91
625
19800
9000
22700
10300
23400
10600
26000
11800
35300
16000
38600
17500
36400
16500
48100
21800
20400
9250
23400
10600
24000
10900
26800
12150
36400
16500
39700
18000
37500
17000
49400
22400
20900
9500
24000
10900
25400
11500
28300
12850
37500
17000
40800
18500
38600
17500
52000
23600
22000
10000
24700
11200
26000
11800
29100
13200
38600
17500
41900
19000
39700
18000
53600
24300
22700
10300
26000
11800
26800
12150
30000
13600
39700
18000
44100
20000
40800
18500
55100
25000
23400**
10600**
26800**
12150**
27600**
12500**
30900**
14000**
41900**
19000**
45400**
20600**
41900**
19000**
56800**
25750**
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
KG
LBS
29
200
8550
3875
8800
4000
9900
4500
13200
6000
15700
7100
16100
7300
19300
33
225
9350
4250
9650
4375
10700
4875
14300
6500
17100
7750
17600
8000
20900
36
250
10200
4625
10500
4750
11700
5300
15700
7100
18200
8250
18700
8500
22700
40
275
10700
4875
11000
5000
12300
5600
17100
7750
19800
9000
20400
9250
24700
44
300
11700
5300
12000
5450
13200
6000
18200
8250
20900
9500
21500
9750
26000
47
325
12300*
5600*
12800*
5800*
14300*
6500*
19300*
8750*
22000*
10000*
22700*
10300*
27600*
51
350
12800
5800
13600
6150
15200
6900
20400
9250
23400
10600
24000
10900
29100
54
375
13600
6150
13900
6300
15700
7100
21500
9750
24700
11200
25400
11500
30900
58
400
14300
6500
14800
6700
16500
7500
22700
10000
26000
11800
26800
12150
32000
62
425
15200**
6900**
15700**
7100**
17600**
8000**
23400**
10600**
27600**
12500**
28300**
12850**
34200**
30 MPH (50 KM/H) MAXIMUM SPEED OFF-THE-ROAD ARTICULATED DUMP SERVICE
RADIAL
600/65R25
25/65R25
650/65R25
750/65R25
(30/65R25)
30/65R29
775/65R29
875/65R29
KG
8750
9500
10300
11200
11800
12500*
13200
14000*
14500
15500**
65
450
69
475
73
500
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) MAXIMUM OFF-THE-ROAD SLOW SPEED SERVICE
PSI
KPA
LBS
KG
LBS
KG
45/65R45
LBS
(1150/65R45) KG
PSI
BIAS
KPA
30/65-29
LBS
KG
35/65-33
LBS
KG
40/65-39
LBS
KG
41.25/70-39
LBS
KG
45/65-45
LBS
KG
50/65-51
LBS
KG
67-51
LBS
KG
RADIAL
875/65R33
(35/65R33)
45/65R39
115
58
400
43000
19500
74000
33500
78500
35500
47
325
28300
12850
39700
18000
52000
23600
66000(34)
30000(34)
71500
32500
93500
42500
156500
71000
62
425
45400
20600
76000
34500
82500
37500
51
350
29100(20)
13200(20)
41900(24)
19000(24)
55100
25000
69500
31500
76000
34500
96500
43750
165500
75000
65
450
46700
21200
80500
36500
85500
38750
54
375
30900
14000
43000
19500
56800
25750
71500
32500
78500
35500
102000
46250
171000
77500
69
475
49400
22400
82500
37500
88000
40000
58
400
32000(24)
14500(24)
44100
20000
60000(30)
27250(30)
74000
33500
82500
37500
104500
47500
176500
80000
73
500
50700*
23000*
88000*
40000*
93500*
42500*
62
425
76
525
52000
23600
91000
41250
96500
43750
65
450
80
550
55100
25000
93500
42500
99000
45000
69
475
83
575
56800
25750
96500
43750
102000
46250
73
500
87
600
58400
26500
99000
45000
104500
47500
76
525
91
625
60000
27250
102000
46250
110000
50000
80
550
94
650
61500**
28000**
104500**
47500**
113500**
51500**
83
575
87
600
91
625
46700
21200
61500
28000
78500
35500
85500(38)
38750(38)
107500
48750
187500
85000
48100(30)
21800(30)
64000
29000
80500
36500
88000
40000
113500
51500
193000(54)
87500(54)
49400
22400
66000
30000
82500(42)
37500(42)
91000
41250
117000(46)
53000(46)
198500
90000
50700
23000
68000(36)
30750(36)
52000(36)
23600(36)
53600
24300
55100
25000
56800
25750
58400(42)
26500(42)
93500
42500
120000
54500
204000
92500
96500(46)
43750(46)
123500
56000
209500
95000
99000
45000
128000
58000
215000
97500
102000
46250
128000(54)
58000(54)
220500
100000
104500
47500
132500
60000
227000
103000
104500
47500
135500
61500
94
650
98
675
107500
48750
139000(62)
63000(62)
110000(58)
50000(58)
LOAD LIMITS AT COLD INFLATION PRESSURES
45 MPH (70 KM/H) REFERENCE SPEED, CRANE SERVICE
RADIAL
650/55R25
RADIAL
555/65R25
RADIAL
445/80R25
525/80R25
605/80R25
116
RADIAL
385/95R24,25
445/95R25
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
LBS
KG
PSI
KPA
LBS
KG
LBS
KG
65
450
13200
6000
65
450
10700
4875
76
525
10500
4750
13600
6150
17600
8000
105
725
11700
5300
13600
6150
69
475
13600
6150
69
475
11000
5000
80
550
11000
5000
14300
6500
18200
8250
109
750
12000
5450
13900
6300
PSI
KPA
LBS
KG
LBS
KG
65
450
8150
3700
70
475
8620
3910
80
550
15200
6900
80
550
12300
5600
91
625
12000
5400
15700
7100
20400
9250
120
825
83
575
15700
7100
83
575
12800
5800
94
650
12300
5600
16100
7300
20900
9500
123
850
87
600
16100
7300
87
600
13200
6000
98
675
12800
5800
16500
7500
21500
9750
127
875
14300
6500
76
525
14300
6500
76
525
12000
5450
87
600
11700
5300
15200
6900
19300
8750
116
800
12300(L)
5600(L)
14800
6700
14800
6700
15200
6900
75
525
9070
4110
80
550
9500
4310
85
575
9930
4500
90
625
10340
4690
73
500
13900
6300
73
500
11700
5300
83
575
11400
5180
14800
6700
18700
8500
112
775
55 MPH (90 KM/H) REFERENCE SPEED, CRANE SERVICE
RADIAL
385/95R24,25
445/95R25
94
650
13900(172E)
6300(172E)
15700
7100
91
625
13600
6150
102
700
13200(170E)
6000(170E)
17100(179E)
7750(179E)
22000(188E)
10000(188E)
131
900
13270(170E)(M)
6000(170E)(M)
16100(177E) (J)
7300(177E) (J)
95
650
10730
4870
100
700
11400(J)
5150(J)
105
725
11700
5300
141
975
13930(N)
6300(N)
110
750
12000
5450
16100(177E) (J)
7300(177E) (J)
115
800
12300(L)
5600(L)
131
900
13270(M)
6000(M)
141
975
13930(N)
6300(N)
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) OFF-THE-ROAD UNDERGROUND MINE SERVICE
117
100
690
4540(12)
2060(12)
105
720
4675
2120
110
760
4800
2175
115
790
4930
2235
120
830
5050
2290
125
860
5175
2345
130
900
5295
2400
135
930
5415(16)
2455(16)
140
970
145
1000
150
1030
LBS 6515
KG 2955
6715
3045
6905
3130
7100
3220
7285
3305
7470
3390
7650(20)
3470(20)
7825
3550
8000
3630
8175
3710
8345
3785
8510(24)
3860(24)
24X12-12NHS
LBS 5260
KG 2385
5420
2460
5580
2530
5740
2605
5900
2675
6050
2745
6200
2810
6350
2880
6450
2925
6600
2995
6750
3060
6900
3130
8.25-15NHS
LBS 5605
KG 2540
5775
2620
5940
2695
6105
2770
6265
2840
6425
2915
6580
2985
6730
3055
6880
3120
7030(16)
3190(16)
36X11-15NHS
(10.00L-15)
LBS 7520
KG 3410
7750
3515
7975
3615
8195
3715
8410(16)
3815(16)
8620
3910
8830
4005
9035
4100
9235
4190
9435
4280
9630(20)
4370(20)
32X15-15NHS
(32X14.50-15)
LBS 8350
KG 3790
8600
3900
8850
4015
9100
4130
9300
4220
9550
4330
9800
4445
10000(20)
4535(20)
10200
4625
10500
4765
10700
4855
10900
4945
35X15-15NHS
(14.50L-15)
LBS 9415
KG 4270
9705
4400
9985
4530
10260
4655
10530
4775
10795
4895
11055
5015
11310(20)
5130(20)
11565
5245
11815
5360
12060
5470
12300
5580
38X16-15NHS
LBS 11500
KG 5215
11810
5355
12150
5510
12485
5665
12815
5810
13140
5960
13455
6105
13770
6245
14075
6385
14380
6520
14675
6655
14970
6790
BIAS
27X9-10NHS
PSI
KPA
LBS
KG
27X15-10NHS
(15L-10)
95
660
4405
2000
L ALL INFLATION PRESSURES ABOVE 150 PSI REQUIRE PERMAFOAM INFLATION/FILL.
Above loads and inflatiaons are for tires only. Please consult your rim manufacturer for their approvals.
L
L
L
PERMAFOAM INFLATION REQUIRED
L
7900(24)
3585(24)
8910(24)
4040(24)
10750(24)
4875(24)
11100(24)
5035(24)
13905(28)
6305(28)
15830(28)
7180(28)
14975(32)
6795(32)
17200(32)
7800(32)
19500(40)
8845(40)
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) OFF-THE-ROAD UNDERGROUND MINE SERVICE
PSI
KPA
LBS
KG
95
660
9350(14)
4250(14)
100
690
9650
4375
105
720
9900
4500
42X13-20 NHS
LBS
KG
10500
4765
10800
4900
11100(16) 11500
5035(16) 5215
12.00-20NHS
LBS
KG
11700
5300
12000(16)
5450(16)
12300
5600
44X18-20NHS
LBS
KG
14300
6485
14700
6670
14.00-20NHS
LBS
16100
7300
50X20-20NHS
LBS
KG
14.00-24NHS
LBS
KG
BIAS
10.00-20NHS
118
120
830
125
860
130
900
135
930
145
1000
150
1030
11800
5350
12100
5490
12300
5580
12600
5715
12900(20) 13200
5850(20) 5985
13500
6125
13700
6215
12800
5800
13200
6000
13600(20) 13900
6150(20) 6300
13900
6500
14300
6500
14800
6700
15200(24)
6900(24)
15200
6900
15200
6895
15600
7075
16000
7260
16400
7440
16800
7620
17200
7800
17600
7985
17900
8120
18300
8300
18700
8480
16600(20)
7500(20)
17100
7750
17600
8000
18200
8250
18700(24) 18700
8500(24) 8500
19300
8750
19800
9000
20400(28)
9250(28)
22500
10200
23200
10500
23900
10800
24500
11100
25200
11400
25800(28) 26400
11700(28) 12000
27100
12300
27700(32)
12600(32)
18200
8250
18700(20)
8500(20)
19300
8750
19800
9000
20400
9250
20900(24) 20900
9500(24) 9500
21500
9750
22000(28)
10000(28)
110
115
760
790
10200(16)
4625(16)
L ALL INFLATION PRESSURES ABOVE 150 PSI REQUIRE PERMAFOAM INFLATION/FILL.
Above loads and inflatiaons are for tires only. Please consult your rim manufacturer for their approvals.
140
970
L
L
L
PERMAFOAM INFLATION REQUIRED
17000(32)
7710(32)
L
21600(48)
9800(48)
16500(28)
7500(28)
20100(32)
9115(32)
21500(36)
9750(36)
22000(32)
10000(32)
28300(48)
12850(48)
30000(36)
13610(36)
25500(48)
11565(48)
LOAD LIMITS AT COLD INFLATION PRESSURES
5 MPH (10 KM/H) OFF-THE-ROAD UNDERGROUND MINE SERVICE
PSI
KPA
LBS
KG
105
725
8250
3750
109
750
8550
3875
112
775
8550
3875
116
800
8800
4000
120
825
9100
4125
123
850
9350
4250
127
875
9350
4250
131
900
9650
4375
134
925
9900
4500
138
950
10200
4625
141
975
10200
4625
145
1000
10500
4750
149
1025
10700
4875
35X15R15NHS
LBS
KG
10200
4625
10500
4750
10700
4875
11000
5000
11400
5150
11700
5300
12000
5450
12000
5450
12300
5600
12800
5800
12800
5800
13200
6000
13200
6000
18300
8300
12.00R20 NHS
LBS
KG
12300
5600
12800
5800
12800
5800
13200
6000
13600**
6150**
13900
6300
13900
6300
14300
6500
14800
6700
15200***
6900***
15200
6900
15700
7100
16100
7300
20000
9075
46X15R20NHS
LBS
KG
15200
6900
15700
7100
16100
7300
16100*** 16500
7300*** 7500
17100
7750
17600
8000
17600
8000
18200
8250
18700
8500
18700
8500
19300
8750
19800
9000
29700
13500
46X18R20NHS
LBS
KG
16100
7300
16500
7500
16500
7500
17100*** 17600
7750*** 8000
18200
8250
18200
8250
18700
8500
19300
8750
19800
9000
19800
9000
20400
9250
20900
9500
31700
14400
14.00R24NHS
LBS
KG
12300
5600
12800
5800
13200
6000
13600***
6150***
17.5R25
LBS
KG
20400
9250
20900
9500
21500
9750
22000***
10000
RADIAL
36X11R15NHS
119
L ALL INFLATION PRESSURES ABOVE 150 PSI REQUIRE PERMAFOAM INFLATION/FILL.
Above loads and inflatiaons are for tires only. Please consult your rim manufacturer for their approvals.
L
L
12500
5675
L
DRIVE AWAY
LOAD AND INFLATION TABLES: ENGLISH
CONVENTIONAL SIZE TIRES
MAXIMUM SPEED — 30 MPH
(MINIMUM INFLATION PRESSURE – 25 PSI)
120
Tire
Size
12.00-20,21 NHS
12.00-24,25 NHS
13.00-24,25 NHS
14.00-20,21 NHS
14.00-24,25 NHS
16.00-21 NHS
16.00-25
18.00-25
18.00-33
18.00-49
21.00-25
21.00-35
21.00-49
24.00-25
24.00-29
24.00-35
24.00-43
24.00-49
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce premature tire failure!
TIRE LOAD LIMITS (POUNDS) AT VARIOUS COLD INFLATION PRESSURES — POUNDS PER SQUARE INCH (PSI)
25
2690
3020
3500
3680
4120
4920
5380
6950
8050
10200
8950
10600
12900
11600
12400
13600
15200
16300
BIAS - 30 MPH
ADD 10 PSI FOR RADIAL
English
30
2990
3360
3880
4100
4580
5460
5980
7750
9000
11400
9950
11800
14300
12900
13800
15100
16900
18100
35
3260
3680
4260
4500
5020
5980
6550
8500
9850
12400
10900
12900
15700
14100
15100
16600
18500
19900
40
3540
3980
4600
4860
5420
6450
7100
9150
10600
13400
11800
14000
17000
15200
16300
17900
20000
21500
45
3780
4260
4920
5200
5800
6950
7600
9800
11400
14400
12600
15000
18200
16300
17500
19200
21400
23000
50
4020
4540
5240
5540
6200
7350
8050
10400
12100
15300
13400
15900
19300
17400
18600
20400
22700
24500
55
4260
4800
5540
5860
6550
7800
8550
11000
12800
16200
14200
16900
20400
18400
19700
21600
24000
25900
60
4480
5040
5820
6150
6850
8200
9000
11600
13500
17000
14900
17700
21500
19300
20700
22700
25300
27200
65
4700
5280
6100
6450
7200
8600
9400
12200
14100
17800
15700
18600
22500
20200
21700
23800
26500
28500
70
4900
5520
6400
6750
7500
8950
9850
12700
14700
18600
16400
19400
23500
21100
22600
24800
27700
29800
75
5100
5740
6650
7000
7850
9350
10200
13200
15400
19400
17000
20200
24500
22000
23600
25800
28800
31000
For Service Notes – See next page.
Contact your Rim Supplier regarding information on Rim Strength.
80
5300
5960
6900
7300
8150
9700
10600
13700
15900
20200
17700
21000
25400
22900
24500
26800
29900
32200
85
5500
6200
7150
7550
8450
10100
11000
14200
16500
20900
18300
21700
26300
23700
25400
27800
31000
33400
90
5680
6400
7400
7800
8700
10400
11400
14700
17100
21600
18900
22500
27200
24500
26200
28800
32100
34500
95
5860
6600
7600
8050
9000
10700
11800
15200
17600
22300
19600
23200
28100
25300
27100
29700
33100
35600
100
6050
6800
7850
8300
9250
11100
12100
15700
18200
23000
20200
23900
29000
26000
27900
30600
34100
36700
DRIVE AWAY
LOAD AND INFLATION TABLES: ENGLISH
CONVENTIONAL SIZE TIRES
MAXIMUM SPEED — 30 MPH
(MINIMUM INFLATION PRESSURE – 25 PSI)
Tire
Size
27.00-33
27.00-49
30.00-51
33.00-51
36.00-51
40.00-57
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce
premature tire failure!
TIRE LOAD LIMITS (POUNDS) AT VARIOUS COLD INFLATION PRESSURES — POUNDS PER SQUARE INCH (PSI)
25
16200
20000
24700
28600
34900
44500
121
BIAS - 30 MPH
ADD 10 PSI FOR RADIAL
English
30
18100
22200
27500
31900
38800
49600
35
19800
24300
30100
34900
42500
54200
40
21400
36300
32500
37700
45900
58600
45
22900
28200
34900
40400
49200
63000
50
24400
30000
37100
43000
52300
67000
55
25800
31700
39200
45400
55300
70500
60
27100
33300
41300
47800
58200
74500
65
28400
34900
43200
50100
61000
78000
70
29700
36500
45200
52300
63500
81500
75
30900
38000
47000
54500
65500
84500
80
32100
39400
48800
56500
69000
88000
85
33200
40900
50600
58600
71500
91000
90
34400
42300
52300
60500
74000
94000
95
35500
43600
54000
62500
76000
97500
Service Notes –
A. Regular Tread Tires
1. Maximum Highway Speeds: Conventional tires – 30 MPH, Wide Base Tires – 20 MPH.
2. Stop for 30 minute cooling period after each 50 miles of driving or 2 hours of sustained operation,
whichever comes first.
3. One hour minimum stop should be observed after each 4 hours of operation.
4. Where Conventional and Wide Base tires are mixed on vehicle, use guidelines specified for Wide Base
tires.
B. Extra Skid Depth and Special Compound Tires
1. Vehicles equipped with extra skid depth tires are not to be driven in transit over the highway unless the
proposed trip is reviewed and approved by the tire manufacturer.
C. Instructions for Use of Drive-Away Table –
1. Determine the load each tire will carry.
2. Using the table, select the inflation pressure shown for the tire load determined. This is the pressure
required for drive-away service.
3. Tire ply rating is ignored when determining drive-away load and pressure conditions.
Contact your Rim Supplier regarding information on Rim Strength.
100
36600
44900
55600
64500
78500
10000
DRIVE AWAY
LOAD AND INFLATION TABLES: ENGLISH
WIDE BASE SIZE TIRES
MAXIMUM SPEED — 20 MPH
(MINIMUM INFLATION PRESSURE – 26 PSI)
122
Tire
Size
15.5-25
17.5-25
20.5-25
23.5-25
26.5-25
26.5-29
29.5-25
29.5-29
29.5-35
33.25-29
33.25-35
33.5-33
33.5-39
37.25-35
37.5-33
37.5-39
37.5-51
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce
premature tire failure!
TIRE LOAD LIMITS (POUNDS) AT VARIOUS COLD INFLATION PRESSURES — POUNDS PER SQUARE INCH (PSI)
25
3740
4460
5960
7600
9550
10200
11500
12300
13400
15100
16400
16500
17800
19800
19800
21300
24100
BIAS - 20 MPH
ADD 10 PSI FOR RADIAL
English
30
4160
4960
6650
8450
10600
11400
12800
13700
14900
16800
18200
18400
19800
22000
22100
23700
26800
35
4540
5440
7250
9250
11600
12400
14000
14900
16300
18400
20000
20100
21600
24100
24200
25900
29300
40
4920
5880
7850
10000
12600
13400
15200
16200
17600
19900
21600
21700
23400
26000
26100
28000
31700
45
5260
6300
8400
10700
13500
14400
16300
17300
18800
21300
23100
23300
25100
27900
28000
30000
34000
50
5600
6700
8950
11400
14300
15300
17300
18400
20000
22700
24600
24800
26700
29600
29800
32000
36100
55
5920
7100
9450
12100
15200
16200
18300
19500
21200
24000
26000
26200
28200
31300
31500
33800
38200
60
6250
7450
9950
12700
16000
17000
19200
20500
22300
25200
27400
27500
29700
33000
33100
35600
40200
65
6550
7800
10400
13300
16700
17900
20200
21500
23400
26500
28700
28900
31100
34500
34700
37300
41200
70
6800
8150
10900
13900
17500
18700
21000
22400
24400
27600
29900
30100
32500
36100
36200
38900
44000
75
7100
8500
11300
14500
18200
19400
21900
23300
25400
28800
31200
31400
33800
37600
37700
40500
45800
80
7400
8800
11800
15000
18900
20200
22800
24200
26400
29900
32400
32600
35100
39000
39200
42100
47600
85
7650
9150
12200
15600
19600
20900
23600
25100
27300
30900
33500
33800
36400
40400
40600
43600
49300
90
7900
9450
12600
16100
20200
21600
24400
26000
28300
32000
34700
34900
37600
41800
42000
45100
51000
95
8150
9750
13000
16600
20900
22300
25200
26800
29200
33000
35800
36000
38800
43100
43300
46500
52600
100
8400
10000
13400
17100
21500
23000
25900
27600
30100
34000
36900
37100
40000
44400
44700
47900
54200
Service Notes –
A. Regular Tread Tires
1. Maximum Highway Speeds: Conventional tires – 30 MPH, Wide Base Tires – 20 MPH.
2. Stop for 30 minute cooling period after each 50 miles of driving or 2 hours of sustained operation, whichever comes first.
3. One hour minimum stop should be observed after each 4 hours of operation.
4. Where Conventional and Wide Base tires are mixed on vehicle, use guidelines specified for Wide Base tires.
B. Extra Skid Depth and Special Compound Tires
1. Vehicles equipped with extra skid depth tires are not to be driven in transit over the highway unless the
proposed trip is reviewed and approved by the tire manufacturer.
C. Instructions for Use of Drive-Away Table –
1. Determine the load each tire will carry.
2. Using the table, select the inflation pressure shown for the tire load determined. This is the pressure
required for drive-away service.
3. Tire ply rating is ignored when determining drive-away load and pressure conditions.
Contact your Rim Supplier regarding information on Rim Strength.
LOAD AND INFLATION TABLES: METRIC
CONVENTIONAL SIZE TIRES
MAXIMUM SPEED — 50 kph
(MINIMUM INFLATION PRESSURE – 1.75 BAR)
123
Tire
Size
12.00-20,21 NHS
12.00-24,25 NHS
13.00-24,25 NHS
14.00-20,21 NHS
14.00-24,25 NHS
16.00-21 NHS
16.00-25
18.00-25
18.00-33
18.00-49
21.00-25
21.00-35
21.00-49
24.00-25
24.00-29
24.00-35
24.00-43
24.00-49
DRIVE AWAY
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce
premature tire failure!
TIRE LOAD LIMITS (KILOGRAMS) AT VARIOUS COLD INFLATION PRESSURES — BAR
1.75
1215
1400
1600
1700
1900
2240
2430
3150
3650
4625
4125
4875
5800
5300
5600
6150
6900
7500
2.00
1320
1500
1750
1850
2060
2430
2650
3450
4000
5000
4375
5300
6300
5800
6150
6700
7500
8000
BIAS - 50 kph
ADD .75 BAR FOR RADIAL
Metric
2.25
1400
1600
1850
1950
2180
2575
2900
3650
4250
5450
4750
5600
6900
6150
6500
7300
8000
8750
2.50
1500
1700
2000
2060
2300
2800
3000
3875
4500
5800
5000
6000
7300
6500
6900
7750
8500
9250
2.75
1600
1800
2060
2180
2430
2900
3250
4125
4875
6150
5300
6300
7750
6900
7300
8000
9000
9750
3.00
1700
1900
2180
2300
2575
3075
3350
4375
5000
6500
5600
6700
8000
7300
7750
8500
9500
10300
3.25
1750
2000
2300
2430
2725
3250
3550
4625
5300
6700
5800
6900
8500
7500
8250
9000
10000
10600
3.50
1850
2060
2430
2575
2800
3350
3650
4750
5600
7100
6150
7300
8750
8000
8500
9250
10300
11200
3.75
1900
2180
2500
2650
3000
3550
3875
5000
5800
7300
6300
7500
9250
8250
8750
9750
10900
11800
4.00
2000
2240
2575
2725
3075
3650
4000
5150
6000
7500
6700
7750
9500
8500
9250
10000
11200
12150
4.25
2060
2300
2750
2800
3150
3750
4125
5300
6150
7750
6900
8250
10000
9000
9500
10600
11800
12500
4.50
2120
2430
2800
2900
3250
3875
4250
5600
6500
8000
7100
8500
10300
9250
9750
10900
12150
12850
4.75
2180
2500
2900
3000
3350
4000
4375
5800
6700
8500
7300
8750
10600
9500
10300
11200
12500
13200
5.00
2300
2575
3000
3150
3450
4125
4500
5800
6900
8750
7500
9000
10900
9750
10600
11500
12850
13600
5.25
2360
2650
3075
3250
3550
4250
4625
6000
7100
9000
7750
9250
11200
10000
10900
11800
13200
14000
5.50
2430
2725
3150
3350
3650
4375
4875
6300
7300
9250
8000
9500
11500
10300
11200
12150
13600
14500
For Service Notes – See next page.
Contact your Rim Supplier regarding information on Rim Strength.
5.75
2430
2800
3250
3350
3750
4500
5000
6300
7500
9500
8250
9750
11800
10600
11500
12500
14000
15000
6.00
2500
2800
3250
3450
3875
4625
5000
6500
7500
9500
8500
10000
12150
10900
11800
12850
14500
15500
6.25
2575
2900
3350
3550
4000
4750
5150
6700
7750
9750
8500
10300
12500
11200
11800
13200
14500
15500
6.50
2650
3000
3450
3650
4125
4875
5300
6900
8000
10000
8750
10600
12500
11500
12150
13600
15000
16000
6.75
2725
3075
3550
3750
4125
5000
5450
7100
8250
10300
9000
10600
12850
11800
12500
13600
15500
16500
7.00
2800
3075
3650
3750
4250
5000
5600
7100
8250
10600
9250
10900
13200
11800
12850
14000
15500
17000
DRIVE AWAY
LOAD AND INFLATION TABLES: METRIC
CONVENTIONAL SIZE TIRES
MAXIMUM SPEED — 50 KPH
(MINIMUM INFLATION PRESSURE – 1.75 BAR)
Tire
Size
27.00-33
27.00-49
30.00-51
33.00-51
36.00-51
40.00-57
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce
premature tire failure!
TIRE LOAD LIMITS (KILOGRAMS) AT VARIOUS COLD INFLATION PRESSURES — BAR
1.75
7500
9250
11200
13200
16000
20600
2.00
8000
10000
12150
14000
17500
21800
124
BIAS - 50 MPH
ADD .75 BAR FOR RADIAL
Metric
2.25
8500
10600
13200
15000
18500
23600
2.50
9250
11200
14000
16000
19500
25000
2.75
9750
11800
14500
17000
20600
26500
3.00
10300
12500
15500
18000
21800
28000
3.25
10600
13200
16000
19000
23000
29000
3.50
11200
13600
17000
19500
23600
30750
3.75
11500
14500
17500
20600
25000
31500
4.00
12150
15000
18500
21200
25750
33500
4.25
12500
15500
19000
21800
26500
34500
4.50
12850
16000
19500
23000
28000
35500
4.75
13200
16500
20000
23600
29000
36500
5.00
13600
17000
21200
24300
29000
37500
5.25
14000
17500
21800
25000
30000
38750
5.50
14500
18000
22400
25750
31500
40000
5.75
15000
18500
22400
26500
32500
41250
6.00
15500
19000
23000
27250
32500
41250
6.25
15500
19500
23600
27250
33500
42500
6.50
16000
19500
24300
28000
34500
43750
6.75
16500
20000
25000
29000
35500
45000
Service Notes –
A. Regular Tread Tires
1. Maximum Highway Speeds: Conventional tires – 50 kph, Wide Base Tires – 30 kph.
2. Stop for 30 minute cooling period after each 50 miles of driving or 2 hours of sustained operation,
whichever comes first.
3. One hour minimum stop should be observed after each 4 hours of operation.
4. Where Conventional and Wide Base tires are mixed on vehicle, use guidelines specified for Wide Base
tires.
B. Extra Skid Depth and Special Compound Tires
1. Vehicles equipped with extra skid depth tires are not to be driven in transit over the highway unless the
proposed trip is reviewed and approved by the tire manufacturer.
C. Instructions for Use of Drive-Away Table –
1. Determine the load each tire will carry.
2. Using the table, select the inflation pressure shown for the tire load determined. This is the pressure
required for drive-away service.
3. Tire ply rating is ignored when determining drive-away load and pressure conditions.
Contact your Rim Supplier regarding information on Rim Strength.
7.00
16500
20600
25750
29000
35500
46250
DRIVE AWAY
LOAD AND INFLATION TABLES: METRIC
WIDE BASE SIZE TIRES
MAXIMUM SPEED — 32 MPH
(MINIMUM INFLATION PRESSURE – 1.75 BAR)
125
Tire
Size
15.5-25
17.5-25
20.5-25
23.5-25
26.5-25
26.5-29
29.5-25
29.5-29
29.5-35
33.25-29
33.25-35
33.5-33
33.5-39
37.25-35
37.5-33
37.5-39
37.5-51
These Loads and Inflations are to be used for Drive
Away Only. They cannot be used for jobsite roading.
DANGER – Operation of vehicles over the road,
ignoring speed limitations and cooling requirements
as noted below, can void tire warranty and induce
premature tire failure!
TIRE LOAD LIMITS (KILOGRAMS) AT VARIOUS COLD INFLATION PRESSURES — BAR
1.75
1700
2060
2725
3450
4375
4625
5300
5600
6150
6900
7500
7500
8250
9000
9000
9750
10900
2.00
1850
2180
3000
3750
4750
5000
5800
6000
6700
7500
8000
8250
8750
9750
9750
10600
11800
BIAS - 32 MPH
ADD .75 PSI FOR RADIAL
Metric
2.25
2000
2360
3150
4000
5000
5450
6150
6500
7100
8000
8750
8750
9500
10600
10600
11200
12850
2.50
2120
2500
3350
4250
5450
5800
6500
6900
7500
8500
9250
9250
10000
11200
11200
12150
13600
2.75
2240
2650
3550
4500
5600
6150
6900
7300
8000
9000
9750
9750
10600
11800
11800
12850
14500
3.00
2360
2800
3750
4750
6000
6500
7300
7750
8500
9500
10300
10300
11200
12500
12500
13200
15000
3.25
2430
2900
3875
5000
6300
6700
7500
8000
8750
10000
10900
10900
11800
12850
13200
14000
16000
3.50
2575
3075
4125
5300
6500
7100
8000
8500
9250
10300
11200
11200
12150
13600
13600
14500
16500
3.75
2650
3150
4250
5450
6900
7300
8250
8750
9500
10900
11800
11800
12850
14000
14000
15000
17000
4.00
2800
3350
4375
5600
7100
7500
8500
9000
10000
11200
12150
12150
13200
14500
14500
16000
18000
4.25
2900
3450
4625
5800
7300
7750
8750
9500
10300
11500
12500
12850
13600
15000
15000
16500
18500
4.50
3000
3550
4750
6000
7500
8000
9250
9750
10600
12150
13200
13200
14000
15500
16000
17000
19000
4.75
3075
3650
4875
6300
7750
8500
9500
10000
10900
12500
13600
13600
14500
16000
16500
17500
20000
5.00
3150
3750
5000
6500
8000
8750
9750
10300
11200
12850
14000
14000
15000
17000
16500
18000
20600
5.25
3250
3875
5150
6700
8250
9000
10000
10600
11500
13200
14500
15000
15500
17000
17000
18500
21200
5.50
3350
4000
5300
6900
8500
9250
10300
10900
11800
13600
14500
14500
16000
17500
17500
19000
21800
5.75
3450
4125
5450
6900
8750
9250
10600
11200
12150
14000
15000
15000
16500
18000
18000
19500
21800
6.00
3550
4250
5600
7100
9000
9500
10900
11500
12500
14000
15500
15500
16500
18500
18500
20000
22400
6.25
3650
4250
5800
7300
9250
9750
11200
11800
12850
14500
16000
16000
17000
19000
19000
20600
23000
6.50
3650
4375
5800
7500
9500
10000
11500
12150
13200
15000
16000
16500
17500
19500
19500
21200
23600
6.75
3750
4500
6000
7750
9750
10300
11500
12500
13600
15000
16500
16500
18000
20000
20000
21200
24300
7.00
3875
4625
6150
7750
9750
10600
11800
12500
13600
15500
17000
17000
18500
20600
20600
21800
25000
Service Notes –
A. Regular Tread Tires
1. Maximum Highway Speeds: Conventional tires – 50 MPH, Wide Base Tires – 32 MPH.
2. Stop for 30 minute cooling period after each 80 miles of driving or 2 hours of sustained operation, whichever comes first.
3. One hour minimum stop should be observed after each 4 hours of operation.
4. Where Conventional and Wide Base tires are mixed on vehicle, use guidelines specified for Wide Base tires.
B. Extra Skid Depth and Special Compound Tires
1. Vehicles equipped with extra skid depth tires are not to be driven in transit over the highway unless the
proposed trip is reviewed and approved by the tire manufacturer.
C. Instructions for Use of Drive-Away Table –
1. Determine the load each tire will carry.
2. Using the table, select the inflation pressure shown for the tire load determined. This is the pressure
required for drive-away service.
3. Tire ply rating is ignored when determining drive-away load and pressure conditions.
Contact your Rim Supplier regarding information on Rim Strength.