Temperature ; Wheel Replacement; Wheel Alignment and Tire Balance- Page 305

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Temperature 

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 A, B, C

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 for this tire 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.

Wheel Alignment and Tire Balance

The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.

Scheduled wheel alignment and wheel balancing are 
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle vibrating
when driving on a smooth road, your wheels may need 
to be rebalanced.

Wheel Replacement

Replace any wheel that is bent, cracked, or badly rusted 
or corroded. If wheel nuts keep coming loose, the wheel,
wheel bolts and wheel nuts should be replaced. If the
wheel leaks air, replace it (except some aluminum wheels,
which can sometimes be repaired). See your dealer if any
of these conditions exist.

Your dealer will know the kind of wheel you need.