Chevrolet 2004 Avalanche Specifications download pdf (Page 432)

Traction – AA, A, B, C

The traction grades, from highest to lowest, are AA, A, B,

and C. Those grades represent the tire’s ability to stop on

wet pavement as measured under controlled conditions

on speciﬁed government test surfaces of asphalt and

concrete. A tire marked C may have poor traction

performance. Warning: The traction grade assigned to

this tire is based on straight-ahead braking traction tests,

and does not include acceleration, cornering,

hydroplaning, or peak traction characteristics.

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.

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.

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Chevrolet 2004 Avalanche Specifications Page 432

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