GMC 2008 Sierra 1500 Pickup Owner's Manual page 376

Passenger (P-Metric) Tire
passenger cars and some light duty trucks and
multipurpose vehicles.
Recommended Inflation Pressure
manufacturer's recommended tire inflation pressure
as shown on the tire placard. See Inflation - Tire
Pressure on page 5-65 and Loading Your Vehicle
on page 4-34.
Radial Ply Tire A pneumatic tire in which the
:
ply cords that extend to the beads are laid at
90 degrees to the centerline of the tread.
Rim A metal support for a tire and upon which
:
the tire beads are seated.
Sidewall The portion of a tire between the tread
:
and the bead.
Speed Rating An alphanumeric code assigned
:
to a tire indicating the maximum speed at which
a tire can operate.
Traction The friction between the tire and the
:
road surface. The amount of grip provided.
Tread The portion of a tire that comes into
:
contact with the road.
5-64
A tire used on
:
Vehicle
:
Treadwear Indicators
called wear bars, that show across the tread of a
tire when only 1/16 inch (1.6 mm) of tread remains.
See When It Is Time for New Tires on page 5-73.
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 5-76.
Vehicle Capacity Weight
designated seating positions multiplied by
150 lbs (68 kg) plus the rated cargo load.
See Loading Your Vehicle on page 4-34.
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 Your Vehicle on page 4-34.
Narrow bands, sometimes
:
The number of
:
Load on
: