Inflation - Tire Pressure; When To Check - Pontiac 2004 Montana Owner's Manual

Inflation - Tire Pressure
The Certification/Tire label or Tire and Loading
Information label 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). See Loading Your
Vehicle on page 4-33.
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:
•
Too much flexing
•
Too much heat
•
Tire overloading
•
Bad wear
•
Bad handling
•
Bad fuel economy
5-68
If your tires have too much air (overinflation), you
can get the following:
•
Unusual wear
•
Bad handling
•
Rough ride
•
Needless damage from road hazards

When to Check

Check your tires once a month or more.
Also, check the tire pressure of the compact spare tire.
It should be at 60 psi (420 kPa).