1994 Pontiac Trans Sport Owner's Manual - Page 232

NOTICE:(Continued) If your tires have too much air (overinflation), you canget: 0 Unusual wear 0 Bad handling Rough ride 0 Needlessdamagefromroad hazards. \ / When to Check Check your tires once a monthor more. Don't forget your compact spare tire. It should be at 60 psi (420 kPa). Tire Inspectionand Rotation To make your tires last longer, have them inspected and rotated at the mileages recommended in the Maintenance Schedule. See "Scheduled Maintenance Services" in the Index. Use this rotation pattern. After the tires have been rotated, adjust the front and rear inflation pressure as shown on the Certification/Tire label. Make certain that all wheel nuts are properly tightened. See "Wheel Nut Torque" in the Index. How to Check Use a good quality pocket-type gage to check tire pressure. Simply looking a t the tires will not tell you the pressure. especially if you have radial tires -which may look properly inflated even if they're underinflated. If your tires have valve caps, be sure to put them back on. They help prevent leaks by keeping out dirt and moisture. 231 ...