Tire Pressure - GMC Sierra 2500 HD2022 Owner's Manual

348 Vehicle Care
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 0 359.
Vehicle Capacity Weight The number
:
of designated seating positions
multiplied by 68 kg (150 lb) plus the
rated cargo load. See Vehicle Load
Limits 0 220.
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 capacity weight and the original
equipment tire size and recommended
inflation pressure. See Tire and Loading
Information Label under Vehicle Load
Limits 0 220.

Tire Pressure

Tires need the correct amount of air
pressure to operate effectively.
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
Tire overloading and overheating,
which could lead to a blowout.
Premature or irregular wear.
Poor handling.
:
Reduced fuel economy.
Overinflated tires, or tires that have
too much air, can result in:
Unusual wear.
Poor handling.
Rough ride.
Needless damage from road
hazards.
Warning
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity.
For additional information regarding
how much weight the vehicle can carry,
and an example of the Tire and Loading
Information label, see Vehicle Load
Limits 0 220. How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle with
more weight than it was designed to
carry.
When to Check
Check the pressure of the tires once a
month or more.
Do not forget the spare tire, if the
vehicle has one. See Full-Size Spare Tire
0 373 for additional information.