Chevrolet 2011 Volt Owner's Manual page 419

Outward Facing Sidewall
The side of an asymmetrical tire
that has a particular side that
faces outward when mounted
on a vehicle. The side of the
tire that contains a whitewall,
bears white lettering, or bears
manufacturer, brand, and/or
model name molding that is
higher or deeper than the same
moldings on the other sidewall
of the tire.
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 54 and Vehicle
Load Limits on page 9 14.
Radial Ply Tire
:
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
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.
I n f o r ma t i o n P r o v i d e d b y :
A pneumatic 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 62.
UTQGS (Uniform Tire
Quality Grading Standards)
A tire information system
that provides consumers with
An
:
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 65.
Vehicle Care 10-53
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