Tire Terminology And Definitions - GMC Savana 2011 Owner's Manual

Tire Pressure on page 9 12
and Vehicle Load Limits on
page 9 12.
(D) DOT (Department of
Transportation) The
:
Department of Transportation
(DOT) code indicates that
the tire is in compliance
with the U.S. Department of
Transportation Motor Vehicle
Safety Standards.
(E) Tire Identification Number
(TIN) The letters and numbers
:
following DOT code are the Tire
Identification Number (TIN). The
TIN shows the manufacturer and
plant code, tire size, and date
the tire was manufactured.
The TIN is molded onto both
sides of the tire, although only
one side may have the date of
manufacture.
(F) Tire Ply Material The type
:
of cord and number of plies in
the sidewall and under the tread.
(G) Single Tire Maximum
Load Maximum load that can
:
be carried and the maximum
pressure needed to support that
load when used as a single. For
information on recommended
tire pressure see Tire Pressure
on page 10 58 and Vehicle Load
Limits on page 9 12.
Tire Terminology and
Definitions
Air Pressure The amount
:
of air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in psi (pounds per
square inch) or kPa (kilopascal).
Accessory Weight This
:
means the combined weight
of optional accessories.
Some examples of optional
accessories are, automatic
transmission, power steering,
I n f o r ma t i o n P r o v i d e d b y :
Vehicle Care
power brakes, power
windows, power seats,
and air conditioning.
Aspect Ratio The relationship
:
of a tire's height to its width.
Belt A rubber coated layer of
:
cords that is located between
the plies and the tread. Cords
may be made from steel or other
reinforcing materials.
Bead The tire bead contains
:
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire A pneumatic tire
:
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
10-55