1995 Buick Regal Owner's Manual - Page 239

Inflation - Tire Pressure The Tire-Loading Information label which is inside the trunk lid shows the correct inflation pressures for your tires, when they're cold. "Cold" means your vehicle has been sitting for at least three hours or driven no more thana mile. 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 kPa). How to Check NOTICE: Don't let anyone tell that underinflation or you overinflation is all right. not. If your tires It's don't have enoughair (underinflation) you can get: Too much flexing Too much heat Tire overloading Bad wear Bad handling Bad fuel economy. If your tires have too much (overinflation), air you can get: Unusual wear Bad handling Rough ride Needless damage from road hazards. Use a good quality pocket-type gage to check tire pressure. Simply looking at the tires will not tell you the pressure, especiallyif 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. 6-31