2003 Pontiac Vibe Owner's Manual - Page 296

High Performance Tire (Option) If this vehicle has the optional 17-inch P215/50ZR17 size tires, they are "high performance" tires. High performance tires are designed for very responsive driving on wet or dry pavement, but they may not offer the traction you would like on snow or ice covered roads. You may also notice more road noise with high performance tires and that they tend to wear faster. Also, see "Tire Inspection and Rotation" later in this section or in the Index. For cold weather driving conditions, you may prefer to get tires designed for snow or ice. See your Pontiac dealer for details regarding winter tire availability and proper tire selection. Also, see "Buying New Tires" later in this section or in the Index. NOTICE: Don't let anyone tell you that underinflation or overinflation is all right. It's not. If your tires don't have enough air (underinflation), you can get the following: D Too much flexing D Too much heat D Tire overloading D Bad wear D Bad handling D Bad fuel economy If your tires have too much air (overinflation), you can get the following: D Unusual wear D Bad handling D Rough ride D Needless damage from road hazards Inflation -- Tire Pressure The Tire-Loading Information label, which is in your glove compartment, 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 1 mile (1.6 km). 6-51