1995 Pontiac Bonneville Owner's Manual - Page 247

Inflation Tire Pressure The Tire-Loading Information label which is on the rear edge of the driver's door shows the correct inflation pressures for your tires, when they're cold."Cold" means yourvehicle has been sitting for at least three hours or driven no more than a mile. - NOTICE: Don't let anyone tell you that un'derinflationor overinflation is all right. It's not.If your tires don't have enough air (underinflation] you can get: 0 NOTICE: (Continued) If'your tires have too much air (overinflation), you can get: Unusual wear Bad handling 0 Rough ride Needless damage from road hazards. When to Check Check your tires once a month or more. Don't forget your compact spare tire. It should be at 60 psi (420 P a ) . How to Check Use a good quality pocket-type gage to check tire pressure. Simply looking at 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 sureto put them back on. They help prevent leaks by keeping out dirt and moisture. Too much flexing i Too much heat ' . . . .> '+ ,% :? . .' ' " Tire overloading Bad wear Bad handling Bad fuel economy. NOTICE: (Continued) 6-34