1998 Oldsmobile 88 Owner's Manual - Page 265

NOTICE: (Continued) The Tire-Loading Information label, which is on the rear edgeof the driver's door shows the correct inflation If your tires have much air (overinflation), too pressures for your tires when they're cold. "Cold" you can get the following: means your vehicle has been sitting at least three for Unusual wear 1 hours or driven no more thanmile (1.6 km). Bad handling Rough ride NOTICE: Needless damage from road hazards. Don't let anyone tell that underinflationor you overinflation is all right.It's not. If your tires don't have enoughair (underinflation), you can get the following: Too much flexing Too much heat Tire overloading Bad wear Bad handling Bad fuel economy. NOTICE: (Continued) 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 Wa). How to Check Use a good quality pocket-type gage to check tire pressure. You can't tell if your tires are properly inflated simply by looking at them. Radial tires may look properly inflated even when they're underinflated. Be sure to put valve caps back on the valve the stems. They help prevent leaks by keeping out dirt and moisture. Inflation -- Tire Pressure 6-36