1992 Honda Accord Owner's Manual - Page 152

1992 Honda Accord Manual

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DOT Tire Quality Grades (cont'd) 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, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and possible tire failure.

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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, underinflation, or
excessive loading, either separately or in combination, can cause
heat buildup and possible tire failure.
DOT Tire Quality Grades (cont'd)