GMC 2011 Acadia - Manual (Page 372)

Black plate (44,1) GMC Acadia/Acadia Denali Owner Manual - 2011
10-44 Vehicle Care
Passenger (P-Metric) Tire :
A 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 10‑45 and Vehicle
Load Limits on page 9‑12.
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.
Treadwear Indicators :
Narrow 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 10‑53.
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 10‑57.