1997 Buick Regal Owner's Manual - Page 321

1997 Buick Regal Manual

Page 321 highlights

Temperature -- A, B, C The temperature grades areA (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 cause the can material of the tire to degenerate and reduce tire life, and excessive temperature canlead 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 levelsof performance on the laboratory test wheel than the minimum requiredby law. Warning: The temperature grade for tire is this established for atire that is properly inflated and not overloaded. Excessive speed,underinflation, or excessive loading, either separately or combination, in can cause heat buildup possible tire failure. and 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 Buick dealer if any of these conditions exist. Your dealer will know the kind of wheel you need. Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces. If you need to replace any of your wheels, wheel bolts or wheel nuts, replace them only with new GM original equipment parts. Thisway, you will be sure to have the right wheel, wheel bolts and wheel nuts for your Buick model. Wheel Alignment and Tire Balance The wheels on your vehicle were aligned and balanced carefully at the factory to giveyou the longest tire life and best overall performance. 6-45

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