GMC 2012 Sierra Series Owner's Manual page 461

Passenger (P-Metric) Tire
tire used on passenger cars and
some light duty trucks and
multipurpose vehicles.
Recommended Inflation
Pressure Vehicle
:
manufacturer's recommended
tire inflation pressure as shown
on the tire placard. See Tire
Pressure on page 10 62
andVehicle Load Limits on
page 9 17.
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.
A Sidewall The portion of a tire
: :
between the tread and the bead.
Speed Rating
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.
Treadwear Indicators
bands, sometimes called wear
bars, that show across the tread
of a tire when only 1.6 mm
(1/16 in) of tread remains. See
When It Is Time for New Tires
on page 10 71.
I n f o r ma t i o n P r o v i d e d b y :
UTQGS (Uniform Tire Quality
Grading Standards)
information system that provides
An
:
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 10 74.
Vehicle Capacity Weight
number of designated seating
Narrow
:
positions multiplied by
68 kg (150 lbs) plus the rated
cargo load. See Vehicle Load
Limits on page 9 17.
Vehicle Maximum Load on the
Tire
due to curb weight, accessory
weight, occupant weight, and
cargo weight.
Vehicle Care 10-61
A tire
:
:
Load on an individual tire
:
The