2003 Buick Rendezvous Owner's Manual - Page 367

Inflation - Tire Pressure The Certificationrrire label, which is on the rear edge of 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 1 mile (1.6 km). 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: If your tires have too much air (overinflation), you can get the following: Unusual wear Badhandling Roughride 0 Needless damage from road hazards 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). Too much flexing Too much heat Tireoverloading Bad wear Badhandling Bad fuel economy 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 sureto put the valve caps backon the valve stems. They help prevent leaks by keeping out dirt and moisture. Check Tire Pressure System Your vehicle may have a check tire pressure system that can alert you to a large change in the pressure of one tire. The system won't alert you before you drive that a tire is low or flat. You must begin driving before the system will work properly. 5-56