1996 Buick Century Owner's Manual

5. Remove any rust or dirtfrom the wheel bolts,mounting surfaces andspare wheel.Wagon4. Then remove all the wheel nuts and take off the flat tire.Rust or dirt on the wheel, or on the parts towhich it is fastened, can make the wheel nutsbecome loose after a time. The wheel could comeoff and cause an accident. When you change awheel, remove any rust or dirt from the placeswhere the wheel attaches to the vehicle. In anemergency, you can use a cloth or a paper towelto do this; but be sure to use a scraper or wirebrush later, if you need to, to get all the rust ordirt off.5-31