CHEVROLET 2010 Express - Manual (Page 337)

Occupant Distribution : Designated seating
positions.
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 Inflation - Tire Pressure on page 6-68
and Loading the Vehicle on page 5-19.
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 1/16 inch (1.6 mm) of tread
remains. See When It Is Time for New Tires
on page 6-78.
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 6-81.
Vehicle Capacity Weight : The number of
designated seating positions multiplied by 150 lbs
(68 kg) plus the rated cargo load. See Loading
the Vehicle on page 5-19.
6-67