1993 Buick Riviera Owner's Manual - Page 213

Tighten the wheel nuts firmly in a criss-cross sequence as shown. A CAUTION: Incorrect wheel nuts or improperly tightened wheel nuts can cause the wheel to become loose and even comeoff. This could lead to an accident. Besure to use the correct wheel nuts. If you have to replace them, be sure to get the right kind. Stop somewhere assoon as you can and have the nuts tightened with a torque wrench to 100 ft. Ibs. (140.m). Don't try to put wheel cover on your compact spare a in the tire. It won't fit. Store the.whee1 cover trunk until you have the flattire repaired or replaced.