2003 Buick Century Owner's Manual - Page 275

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: 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 the valve caps back on the valve stems. They help prevent leaks by keeping out dirt and moisture. Too much flexing 0 Too muchheat Tire overloading Bad wear Bad handling Bad fuel economy Tire Pressure Monitor System If your vehicle has the tire inflation monitor system, it can alert you to a large change in the pressure of one If your tires have too much air (overinflation), you can get the following: Unusual wear Bad handling Rough ride Needless damage from road hazards tire. The system "learns" the pressure at each tire throughout the operating speed range of your vehicle. The system normally takes between 45 and 90 minutes of driving to learn the tire pressures. This time may be longer depending on your individual driving habits. Learning need not be accumulated during a single trip. Once learned, the system will remember the tire pressures until the system is recalibrated. After the system haslearned tire pressures with properly inflated tires, the LOW TIRElight will come onif the pressure in one tire becomes 12 psi (83 kPa) lower than the other three tires. Thetire inflation monitor system won't alert you if the pressure in more than one tire low, is if the system is not properly calibrated, orif the vehicleis moving faster than 70 mph (1 10 km/h). 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). 5-58