1993 Oldsmobile Achieva Owner's Manual - Page 246

Service & Appearance Care InfIationTiie Pressure The Tire-Loading Information label which is on the rear edgeof the driver's door 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 than a mile. underinflation or overinflation is all right. It's not. If your tires dor't have enough air (underinflation). you can get: Too much flexing Too much heat Tire overloading Bad wear Bad handling Bad fuel economy. If yourtires have too much air (overinflation), you can get: Unusual wear Bad handling Rough ride Needless damage from road hazards. I I When to Check: Check your tires once a month or more. Don't forget your compact spare tire.It should be at60 psi (420 kPa). 244 - 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 valve caps, be sure to put them back on. They help prevent leaks by keeping out dirt and moisture.