1997 Chevrolet Cavalier Owner's Manual - Page 285

A CAUTION: Rust or dirt on wheel, or on the parts to which a it is fastened, can make wheel nuts become loose after a time. The wheel could come and cause off an accident. When you change a wheel, remove any rust or dirt from places where thewheel attaches to the vehicle. In anemergency, you can use a cloth or a paper towel to do this; but be wire brush later, if you sure touse a scraper or all off. need to, to get the rust or dirt (See "Changing a Flat Tire" in the Index.) - When It's Time forNew Tires One way to tell when it's is time for new tires to check the treadwear indicators, which will appear when your tires have only 1/16 inch (1.6 mm) or less of tread remaining. You need a new tire any of the following statements if are true: 0 You can see the indicators at three or more places around the tire. 0 You can see cord or fabric showing through the tire's rubber. 0 The tread or sidewall is cracked, cut or snagged deep enough to show cord fabric. or 0 The tire has a bump, bulge or split. 0 The tire has a puncture, cutor other damage that of can't be repaired well because the size or location of the damage.