Cadillac 2009 owner manual Inflation Tire Pressure, When to Check

Inflation - Tire Pressure

Tires need the correct amount of air pressure to operate effectively.

Notice: Do not let anyone tell you that under-inflation or over-inflation is all right. It is not. If your tires do not have enough air (under-inflation), you can get the following:

•Too much flexing

•Too much heat

•Tire overloading

•Premature or irregular wear

•Poor handling

•Reduced fuel economy

If your tires have too much air (over-inflation), you can get the following:

•Unusual wear

•Poor handling

•Rough ride

•Needless damage from road hazards

A vehicle specific Tire and Loading Information label is attached to your vehicle. This label shows your vehicle’s original equipment tires and the correct inflation pressures for your tires when they are cold. The recommended cold tire inflation pressure, shown on the label, is the minimum amount of air pressure needed to support

your vehicle’s maximum load carrying capacity.

For additional information regarding how much weight your vehicle can carry, and an example of the Tire and Loading Information label, see Loading the Vehicle on page 5-31. How you load your vehicle affects vehicle handling and ride comfort. Never load your vehicle with more weight than it was designed to carry.

When to Check

Check your tires once a month or more.

Do not forget to check the pressure of the spare tire. See Spare Tire on page 6-93for additional information.

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