1998 Oldsmobile Silhouette Owner's Manual - Page 351

Tire Inspection and Rotation Tires should be rotated every 6,000 to 8,000 miles (10 000 to 13 000 km). Any time you notice unusual wear, rotate your tires as soon as possible and check wheel alignment. Also crheck for damaged tires or wheels. See "When It's 'Timefor New Tires" and "Wheel Replacement" later in this section for more information. The purpose of regular rotation is to achieve more uniform wear for all tires on the vehicle. The first rotation is the most important. See "Scheduled Maintenance Services" in the Index for scheduled rotation intervals. Don't include the compact spare tire in your tire rotation. After the tires have been rotated, adjust the front and rear inflation pressures as shown on the CertificatiodTire label. Makecertain that all wheel nuts are properly tightened. See "Wheel Nut Torque" in the Index. a Rust or dirt on wheel, or on the parts to which it is fastened, can make wheel nuts becomeloose after a time. The wheel could comeoff and cause an accident. When you change a wheel, remove any rust or dirt from places wherewheel the attaches to the vehicle. In an emergency, can you use a cloth or a paper towel to do this; but be later, if you sure to use a scraper or wire brush need to, to get all the rust or dirt (See off. "Changing a Flat Tire" in the Index.) 1 When rotating your tires, always use the correct rotation pattern shown here. 6-41