1998 Oldsmobile Aurora Owner's Manual - Page 301
1998 Oldsmobile Aurora Manual
Page 301 highlights
The gradeC corresponds to a levelof performance which all passenger cartires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels performance on the of laboratory test wheel than the minimum required by law. Warning: The temperature grade for this tire is that established for a tire 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 leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). Seeyour retailer if any of these conditions exist. lour retailer 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 replaceany of your wheels, wheel bolts 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 Aurora model. T' Wheel Alignment and Tire Balance The wheels on your vehicle werealigned 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. 'Y: 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. the If Using the wrong replacement wheels, wheel bolts or wheel nutson your vehicle can be dangerous. It could affect the braking and handling of your vehicle, make your tires lose air and make you lose control.You could have a collision in which you or others could be injured. Always use the correct wheel, wheel bolts and wheel nuts for replacement.