1993 Pontiac Trans Sport Owner's Manual - Page 250

on't let anyone tell you that rinflation or overinflatio nght. It's not. If your tires have enough air (underinflation), Tire overloading Bad wear Bad hand1 If your tires (overinflatio When to Check: Check your tires once a month more. or Don't forget your compact spare tire. It should be at 60 psi (420 kPa). How to Check: Use a good quality pocket-type gage to check tire pressure. Simply looking at the tires will not tell the pressure, you especially if you have radial tireswhich may look properly inflated even if they're underinflated . If your tires have valvecaps, be sure to put them back on. They help prevent leaks by keeping out dirt and moisture. Tire inspection and Rotation To make your tires last longer, have them inspected and rotated the at mileages recommended in the MainteIndex under nance Schedule. See the Scheduled MaintenanceSewices. Use this rotation pattern. After the tireshave been rotated, adjust the frontand rear inflation pressure as shown on the Certification/Tire label. al Make certain thatl wheel nuts are properly tightened. See thed e x under I Wheel Nut Torque. Needless damage from r( hazards. 849