1998 Oldsmobile Achieva Owner's Manual - Page 266

NOTICE: (Continued) If your tires have too much (overinflation), air you can get the following: Unusual w a er 0 Tire Inspection and Rotation Tires shouldbe rotated every 6,000 to 8,000 miles (10 OOO to 13 O00 km). Any time you notice unusual w a ,rotate your tires soon as possible and check er as wheel alignment.Also check for damaged tires or wheels. See 'When It's Time for New Tires" and 'Wheel Replacement" laterin 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. Badhandling Rough ride Needless damage from road hazards. When to Check Check your tires once a monthor more. Don't forget yourcompact spare tire. It should be at 60 psi (420 Wa). How to Check Use agood quality pocket-type gage to check tire pressure. You can't tell if your tires are properly inflated simply by looking atthem. Radial tires may look properly inflated even when they're underinflated. Be sure to the valve caps back on the valve put stems. They help prevent leaks by keeping out dirt and moisture. When rotating your tires, always use the correct rotation pattern shown here. - 6-38