Temperature
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 performance
which all passenger car 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 is established for a tire that is properly
inflated and not overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in combination, can cause
heat buildup and a possible tire failure.
BRIDGESTONE® - FIRESTONE®80
B.Improper use or operation, including, without limitation: Im-
proper inflation pressure, overloading, tire/wheel spinning, use of
an improper wheel, tire chain damage, misuse, misapplication,
negligence, tire alteration, or for racing or competition purposes.
C. Insufficient or improper maintenance, including, without limita-
tion: Failure to rotate tires as recommended in this manual, wheel
misalignment, worn suspension components, improper tire mount-
ing or demounting, tire/wheel assembly imbalance, or other
vehicle conditions, defects, or characteristics.
D. Contamination or degradation by petroleum products or other
chemicals, fire or other externally generated heat, or water or other
material trapped inside the tire during mounting or inflation.
E. Improper repair. Improper repair voids this Limited Warranty
F. For RFT tires only, improper run-flat or low tire pressure opera-
tion, including, without limitation: Exceeding speed, distance, or
other run-flat/lowpressure operation limitations.
2. Rapid tread wear or wear-out. Original equipment tires have no mileage warranty.
3. Weather/ozone cracking after 4 years from date of tire manufacture.
4. Ride disturbance or vibration after 1/32 inch (0.8mm) of tread wear use.
5. Tires with sealant, balance, or other filler material that was not originally applied or inserted by the tire manufacturer.
6. Tires used in commercial service.
7. Tires purchased and normally used outside the United States and Canada.
8. The cost of applicable federal, state, and local taxes.
9. Failure to follow any of the safety and maintenance recommendations or warnings contained in this manual.
This Limited Warranty is in addition to and/or may be limited by any
other applicable written warranty you may have received concerning
special tires or situations.
BRIDGESTONE® - FIRESTONE®
82