1997 Oldsmobile Cutlass Owner's Manual - Page 261
1997 Oldsmobile Cutlass Manual
Page 261 highlights
Temperature -- A, B,C The temperature grades are (the highest), B, and C, A representing the tire's resistance to the generation of heat andits 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 life, and tire excessive temperature can lead to sudden tire failure. The grade C corresponds to a level performance of which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard 109. Grades No. B and A represent higher levelsof performance on the laboratory test wheel than minimum required by law. the Warning: The temperature grade this tire is for established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately in combination, or can cause heat buildup and possible tire failure. 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 ali-gnment may need to be reset. you notice your vehicle If vibrating when driving on a smooth road, your wheels may need to be rebalanced. Wheel Replacement Replace any wheel that bent, cracked, or badly rusted is 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 Oldsmobile retailer if any these conditions exist. of Your retailer will know kind of wheel you need. the Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one replaces. it 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 need to replace any your wheels, wheel bolts of or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your Oldsmobile model.