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.
The tire temperature grade is established for a tire that
is properly inflated and not overloaded. Excessive speed, under-
inflation, or excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
DOT Tire Quality Grades (cont'd)
Summary of Contents for 1991 Accord Wagon
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