1998 Oldsmobile 88 Owner's Manual - Page 266

Tire Inspection and Rotation Tires shouldbe rotated every6,000 to 8,000 miles (10 000 to 13 000 km). Any time you notice unusual as wear, rotate your tires as soon possible and check wheel alignment. Also check 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 rotationis to achieve more uniform wear for all tires on vehicle. The first the 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 front the and rear inflation pressures as shown the on Tire-Loading Information label. Make certain that all wheel nutsare properly tightened. See "Wheel Nut Torque" inthe Index. I Rust or dirton a wheel, or on theparts to which it is fastened, can make wheel become loose nuts after a time. The wheel could comeoff and cause an accident. Whenyou change a wheel, remove any rust or dirt from places where the wheel attaches to the vehicle. In an emergency, you can use a cloth a paper towel to do this;but be or sure to use a scraper or wire brush later, if you need to, to get all the or dirt (See rust off. "Changing aFlat Tire" in the Index.) When rotating your tires, always use correct rotation the pattern shown here. 6-37