Inflation - Tire Pressure - GMC 2010 Sierra 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 6 94.
Vehicle Capacity Weight
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. See Loading the
Vehicle on page 5 33.
Vehicle Maximum Load on the Tire
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 the
Vehicle on page 5 33.
6-80
The number of
:
Load on
:

Inflation - Tire Pressure

Tires need the correct amount of air pressure to
operate effectively.
Do not let anyone tell you that
Notice:
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