Inflation - Tire Pressure - Pontiac Montana SV6 2007 Owner's Manual

UTQGS (Uniform Tire Quality Grading
Standards): A tire information system that
provides consumers with ratings for a tire's
traction, temperature, and treadwear. Ratings are
determined by tire manufacturers using government
testing procedures. The ratings are molded into the
sidewall of the tire. See Uniform Tire Quality
Grading on page 473.
Vehicle Capacity Weight: The number of
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. See Loading
Your Vehicle on page 389.
Vehicle Maximum Load on the Tire: Load on an
individual tire due to curb weight, accessory weight,
occupant weight, and cargo weight.
Vehicle Placard: A label permanently attached to
a vehicle showing the vehicle's capacity weight and
the original equipment tire size and recommended
inflation pressure. See "Tire and Loading
Information Label" under Loading Your Vehicle
on page 389.
466
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