1994 Pontiac Firebird Owner's Manual - Page 217

Service and Appearance Care [dation - Tire Pressure The Tire-Loading Information label which is on 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. If your vehicle is equipped with P245/50ZR16 tires and you'll be driving at speeds higher than 100 mph (160 km/h) where it is legal, raise the "cold" inflation pressure of each tire to 35 psi (240 P a ) . When you end this very high speed driving, reduce the "cold" inflation pressures to those listed on the Tire Loading Information label. NOTICE: Don't let anyone tell you that underinflation overinflation is all right. It's not. If your tires don't have enough air (underinflation) you can get: 0 Toomuch flexing Too muchheat Bad wear Bad handling Bad fuel economy. a Tire overloading 0 0 If your tires have too much air (overinflation), you can get: 0 Unusual wear Bad handling Rough ride Needless damage from road hazards. 0 0 .'.. 216