1997 Buick Skylark Owner's Manual - Page 279

Scheduled wheel alignment and wheel balancing are not needed. However, if you notice unusual tire wear or The temperature grades areA (the hghest), B, and C, your vehicle pulling one way or the other, the alignment representing the tire's resistance to the generation of may need to be reset. you notice your vehicle If heat and its ability to dissipate heat when tested under vibrating when driving on a smooth road, your wheels controlled conditions on a specified indoor laboratory may need to be rebalanced. test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire and life, Wheel Replacement excessive temperature can lead to sudden tire failure. Replace any wheel that bent, cracked, or badly rusted is The grade C corresponds to a level performance of or corroded.If wheel nuts keep coming loose, the wheel, which all passenger tires must meet under the car wheel bolts and wheel nuts should be replaced. If the Federal Motor Vehicle Safety Standard 109. Grades No. wheel leaks air, replace (except some aluminum it B andA represent higher levelsof performance on the laboratory test wheel than the minimum required by law.wheels, which can sometimes be repaired). See your Buick dealerif any of these conditions exist. Warning: The temperature grade this tire is for Your dealer will know the kind wheel you need. of established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation,or Each new wheel should have the same load-carrying excessive loading, either separately or in combination, capacity, diameter, width, offset and be mounted the can cause heat buildup and possible tire failure. same way as the onereplaces. it Temperature -- A, B, C Wheel Alignment and Tire Balance If you need to replace any your wheels, wheel bolts of or wheel nuts, replace them only with new GM original The wheels on your vehicle were aligned and balanced equipment parts.This way, you will be sure to have carefully at the factory to give you the longest tire life the right wheel, wheel bolts and wheel nuts for your and best overall performance. Buick model. 6-44