Cadillac 2005 DeVille User Manual download pdf (Page 341)

Temperature – 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.

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. Some aluminum

wheels can sometimes be repaired. See your GM dealer

if any of these conditions exist.

Your GM dealer will know the kind of wheel you need.

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Cadillac 2005 DeVille User Manual Page 341