1996 Pontiac Grand Prix Owner's Manual - Page 277

When to Check. Check your tires once a month or more. ~ Don? forget your compact spare tire. It should be at 60 psi (420 @a). How to Check Use a good quality pocket-type gage to check tire pressure. You can't tell if your tires awproperly inflated simply by looking at them. Radial tires may look properly inflated even when they're underinflated. Be sure toput the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture. 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. When rotating your tires, always use the correct rotation pattern shown here Don't include the compact spare tire in your tire rotation. .L Tire Inspection and Rotation I Tires should be inspected every 6,000 to 8,000 miles (1.0000 to 13 000 Ian) for any signs of unusual wear. If unusual wear is present, rotate your tires as soon as pos-sible and check wheel alignment. Also check for damaged tires or wheels. See "When It'sTime for New Tires" and "Wheel Replacement" later in this section for more information. ' I I . ' ' 6-50 \