1993 Buick Riviera Owner's Manual - Page 252

Wheel Alignment and Tire Balance w. Wheel Replacement Replace any wheel that is bent, cracked or badly rusted. If wheel nuts keep coming loose, the wheel, wheel bolts, and wheel nuts should be replaced. If the wheel leaks air In most cases, you will not need to have your wheels out, replace it (except some aluminum wheels, which aligned again. However, if you notice unusual tire wear can sometimes be repaired). See your Buick dealer if any of these conditions exist. or your vehicle pulling one way or the other, the Your dealer will know the kind wheel you need. of alignment may need to be reset. If you notice your vehicle vibrating when driving on a smooth road, your Eachnew wheel should have the same load carrying wheels may need to be rebalanced. capacity, diameter, width, offset, and be mounted the same way as the one it replaces. of If you needto replace any your wheels, wheel bolts, GM or wheel nuts, replace them only with new original equipment parts. This way, you will be sure to have the right wheel, .wheel bolts, and wheel nuts for your Buick model. The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. '1250