•LT (Light Truck) — Metric tire sizing is based on U.S. design standards.
The size designation for LT-Metric tires is the same as for P-Metric tires
except for the letters “LT” that are molded into the sidewall preceding
the size designation. Example: LT235/85R16.
• Temporary spare tires are designed for temporary emergency use only.
Temporary high pressure compact spare tires have the letter “T” or “S”
molded into the sidewall preceding the size designation. Example:
T145/80D18 103M.
• High flotation tire sizing is based on U.S. design standards and it
begins with the tire diameter molded into the sidewall. Example:
31x10.5 R15 LT.
Tire Sizing Chart
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C,
T145/80D18 103M, 31x10.5 R15 LT
P = Passenger car tire size based on U.S. design standards, or
....blank.... = Passenger car tire based on European design standards, or
LT = Light truck tire based on U.S. design standards, or
TorS= Temporary spare tire or
31 = Overall diameter in inches (in)
215, 235, 145 = Section width in millimeters (mm)
65, 85, 80 = Aspect ratio in percent (%)
– Ratio of section height to section width of tire, or
10.5 = Section width in inches (in)
R = Construction code
– "R" means radial construction, or
– "D" means diagonal or bias construction
15, 16, 18 = Rim diameter in inches (in)
Service Description:
95 = Load Index
– A numerical code associated with the maximum load a tire can carry
H = Speed Symbol
– A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions
– The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions (i.e., tire pressure, vehicle
loading, road conditions, and posted speed limits) TIRES
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Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to the safe and satisfactory
operation of your vehicle. Four primary areas are affected by improper
tire pressure:
•Safety and Vehicle Stability
• Economy
• Tread Wear
• Ride Comfort
Safety
WARNING!
• Improperly inflated tires are dangerous and can cause collisions.
• Underinflation increases tire flexing and can result in overheating
and tire failure.
• Overinflation reduces a tire’s ability to cushion shock. Objects on
the road and chuckholes can cause damage that result in tire
failure.
• Overinflated or underinflated tires can affect vehicle handling and
can fail suddenly, resulting in loss of vehicle control.
• Unequal tire pressures can cause steering problems. You could lose
control of your vehicle.
• Unequal tire pressures from one side of the vehicle to the other can
cause the vehicle to drift to the right or left.
• Always drive with each tire inflated to the recommended cold tire
inflation pressure.
Both under-inflation and over-inflation affect the stability of the vehicle
and can produce a feeling of sluggish response or over responsiveness in
the steering.
NOTE:
• Unequal tire pressures from side to side may cause erratic and
unpredictable steering response.
• Unequal tire pressure from side to side may cause the vehicle to drift
left or right.
TIRES
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Fuel Economy
Underinflated tires will increase tire rolling resistance resulting in higher
fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause abnormal wear patterns
and reduced tread life, resulting in the need for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride. Over-inflation
produces a jarring and uncomfortable ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the driver’s side
B-Pillar or rear edge of the driver’s side door.
At least once a month:
•Check and adjust tire pressure with a good quality pocket-type
pressure gauge. Do not make a visual judgement when determining
proper inflation. Tires may look properly inflated even when they are
under-inflated.
• Inspect tires for signs of tire wear or visible damage.
CAUTION!
After inspecting or adjusting the tire pressure, always reinstall the
valve stem cap. This will prevent moisture and dirt from entering the
valve stem, which could damage the valve stem.
Inflation pressures specified on the placard are always “cold tire inflation
pressure”. Cold tire inflation pressure is defined as the tire pressure after
the vehicle has not been driven for at least three hours, or driven less than
1 mile (1.6 km) after sitting for a minimum of three hours. The cold tire
inflation pressure must not exceed the maximum inflation pressure
molded into the tire sidewall.
Check tire pressures more often if subject to a wide range of outdoor
temperatures, as tire pressures vary with temperature changes.
Tire pressures change by approximately 1 psi (7 kPa) per 12°F (7°C) of air
temperature change. Keep this in mind when checking tire pressure
inside a garage, especially in the Winter.
TIRES
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Temperature Grades
The Temperature grades are A (the highest), B, and C, representing
the tire’s resistance to the generation of heat and its ability to dissipate
heat, when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to
degenerate and reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level of perfor-
mance, which all passenger vehicle tires must meet under the Federal
Motor Vehicle Safety Standard No. 109. Grades B and A represent
higher levels of performance on the laboratory test wheel, than the
minimum required by law.
WARNING!
The temperature grade for this tire is established for a tire that is
properly inflated and not overloaded. Excessive speed, under-
inflation, or excessive loading, either separately or in combina-
tion, can cause heat buildup and possible tire failure.
DEPARTMENT OF TRANSPORTATION UNIFORM TIRE QUALITY GRADES24
WHAT YOU MUST DO WHEN MAKING A CLAIM
When making a claim under the terms of this limited warranty you must
present your tire(s), your vehicle, and your original invoice to a partici-
pating BFGoodrich brand tire retailer. BFGoodrich brand tire retailers are
listed in the yellow pages under “Tire Dealers-Retail”. Personal identifi-
cation (i.e. Driver ’s License, Credit Card, etc.) and vehicle registration
may be required.You pay any service charges for normal vehicle and
tire maintenance.
CONDITIONS AND EXCLUSIONS
This limited warranty does not provide compensation for loss of time,
loss of use of vehicle, inconvenience or incidental or consequential
damages.
Tires presented for claim remain the property of the consumer and
BFGoodrich brand accepts no responsibility for loss of, or damage to,
tires which are in the custody or control of a BFGoodrich tire retailer for
the purpose of inspection for warranty adjustment.
In the event of a disputed claim, the consumer must make the tire
available for further inspection. Tires accepted for claim become the
property of Michelin North America Inc.
No BFGoodrich brand representative, employee or retailer has the
authority to make or imply any representation, promise or agreement,
which in any way varies from the terms of this limited warranty. This
limited warranty applies only in the United States and Canada.
SAFETY MAINTENANCE INFORMATION
Read your Tire Owner ’s Manual, the information on the sidewall of your
tires, your vehicle owner ’s manual and vehicle tire information placard
for essential safety and maintenance information.
When service is required:
1. Contact a participating BFGoodrich tire retailer listed in your yellow pages.
2. If additional assistance is needed in locating a BFGoodrich retailer, please call or write to Consumer Relations as listed on page 43.
BFGOODRICH TIRES
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TIRE SPINNING
Do not spin wheels in excess of 35 mph (55 km/h) as indicated on the
speedometer. Excessive speed in a free-running, unloaded tire can cause
it to “explode” from centrifugal force. The energy released by such an
explosion is sufficient to cause serious physical injury or death. Never
allow anyone to stand near or behind the spinning tire.
When in mud, sand, snow, ice or other slippery conditions, do not engage
in excessive wheel spin. Accelerating the motor excessively, particularly
with automatic transmission vehicles, may cause a drive tire that has lost
traction to spin beyond its speed capability. This is also true when
balancing a drive tire/wheel assembly on the vehicle using the vehicle
engine to spin the tire/wheel assembly.
HIGH SPEED DRIVING CAN BE DANGEROUS
Correct inflation pressure is especially important.However, at high
speeds, even with the correct inflation pressure, a road hazard, for
example is more difficult to avoid and if contact is made, has a greater
chance of causing tire damage than at a lower speed. Moreover, driving
at high speed reduces the reaction time available to avoid accidents and
bring your vehicle to a safe stop.
If you see any damage to a tire or wheel, replace it with the spare at
once and visit a participating BFGoodrich Tire Retailer.
Exceeding the maximum speeds shown on the following page for each
type of BFGoodrich tire will cause the tire to build up excessive heat
which can cause tire damage that could result in sudden tire destruction
and rapid air loss. Failure to control a vehicle when one or more tires
experience a sudden air loss can lead to an accident.
In any case, you should not exceed reasonable speeds as indicated by
the legal limits and driving conditions.
BFGOODRICH TIRES
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SPEED RATINGS
Speed Symbols are shown on the sidewall of some BFGoodrich tires. The
following table shows the maximum speed corresponding to the symbol.
*Some V (or VR) rated tires may have a speed capacity greater than
149 mph (240 km/h). Consult your participating BFGoodrich® tire
retailer for maximum speed rating if your vehicle capability exceeds this
speed.
**Z (or ZR) rated tires are designed to use on cars with maximum speed
capabilities in excess of 149 mph (240 km/h).
(W and Y speed ratings are sub-categories of Z).
Consult your BFGoodrich tire retailer for maximum speed capabilities.
Although a tire may be speed-rated, we do not endorse the operation of
any vehicle in an unsafe or unlawful manner. Speed ratings are based on
laboratory tests which relate to performance on the road, but are not
applicable if tires are underinflated, overloaded, worn out, damaged,
altered, improperly repaired, or retreaded. Furthermore, a tire’s speed
rating does not imply that vehicles can be safely driven at the maximum
speed for which the tire is rated, particularly under adverse road and
weather conditions or if the vehicle has unusual characteristics.
BFGoodrich highway passenger tires that do not have a speed symbol on
the sidewall have a maximum speed rating of 105 mph (170 kph). Light
truck highway tires that do not have a speed symbol on the sidewall of
the tire have a maximum speed rating of 87 mph (140 kph).
The speed and other ratings of retreaded tires are assigned by the
retreader and replace the original manufacturer ’s ratings.
NOTE:In order to maintain the speed capability of the vehicle, replace-
ment tires must have speed ratings equal to or higher than those fitted as
original equipment (as indicated on the vehicle tire placard or owner ’s
manual). If tires with lower speed ratings are fitted, the vehicle’s
handling may be affected and the speed capability of the vehicle will be
lowered to the maximum speed capability of the replacement tires as
indicated in the following table.
BFGOODRICH TIRES
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REMEMBER.... High speed driving can be dangerous and may damage
your tires.AND.... When driving at highway speeds, correct inflation
pressure is especially important.
INSPECT YOUR TIRES, DO NOT DRIVE ON A DAMAGED TIRE
OR WHEEL
HAZARDS
Objects in the road, such as potholes, glass, metal, rocks, wood, debris
and the like, can damage a tire and should be safely avoided. Unavoid-
able contact with such objects should prompt a thorough tire inspection.
BFGOODRICH TIRES
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