1997 Pontiac Firebird Owner's Manual - Page 239

~ Rust or dirt on the wheel, or on the parts to which it is fastened, can make the wheel nuts become looseafter a time. The wheel could come off and cause an accident. When you change a wheel, remove anyrust ordirt from the places where the wheel attaches to the vehicle. In an emergency, you can use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if you need to, to get allthe rust or dirt off. Replace the wheel nuts with the rounded end of the nuts toward the wheel. Tighten each nut by hand until the wheel is held againstthe hub. Never use oil or grease on studsor nuts. If you do, the nuts might comeloose. Your wheelcould fall off, causing aserious accident, 5-34