1998 GMC Safari Owner's Manual - Page 306

NOTICE: (Continued) When to Check Check your tires once a month or mQre. Don't forget your compact'sparetire. It should be at 60 psi (420 Ha). How to Check Use a good quality pocket-type gage to check tire pressure. You can't tell i€your tires are properly M a t e d simply bylooking at them, Radial tires may look properly inflated even when they're undminflated.. Be swe to put the vdve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture. when rotating your tires, always use the cmect rotation pattern shown here. 6-44