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9-58
Vehicle Care
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
bands, sometimes called wear
bars, that show across the
tread of a tire when only 1.6 mm
(1/16 inch) of tread remains.
See When It Is Time for New
Tires on page 9 68.
UTQGS (Uniform Tire Quality
Grading Standards)
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 9 71.
Narrow
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 8 11.
Vehicle Maximum Load on the
Tire
:
A tire
due to curb weight, accessory
:
weight, occupant weight, and
cargo weight.
Vehicle Placard
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 Vehicle
Load Limits on page 8 11.
:
Load on an individual tire
A label
:
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