Chevrolet 2011 Impala Owner's Manual page 304

10-48 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 49 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
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 57.
An
:
Narrow
:
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 61.
Vehicle Capacity Weight
The number of designated
seating positions multiplied by
68 kg (150 lbs) plus the rated
cargo load. See Vehicle Load
Limits on page 9 12.
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