2011 Buick Lucern Owner's Manual - Page 379

8. Remove all wheel nuts and remove the flat tire. { WARNING: Rust or dirt on a wheel, or on the parts to which it is fastened, can make wheel nuts become loose after time. The wheel could come off and cause an accident. When changing a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, use a cloth or a paper towel to do this; but be sure to use a scraper or wire brush later, if needed, to get all the rust or dirt off. See Changing a Flat Tire on page 6 ‑ 88 . 9. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. 6-93