Tire Terminology And Definitions - Chevrolet 2010 Camaro Owner's Manual

9-52 Vehicle Care
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 pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:
the combined weight of optional
accessories. Some examples
of optional accessories are,
automatic transmission, power
steering, 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
:
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
tire in which the plies are laid
at alternate angles less than
90 degrees to the centerline
of the tread.
This means
Cold Tire Pressure
amount of air pressure in a tire,
measured in pounds per square
inch (psi) or kilopascals (kPa)
before a tire has built up heat
from driving. See Tire Pressure
on page 9-54.
Curb Weight
a motor vehicle with standard
and optional equipment including
the maximum capacity of fuel,
oil, and coolant, but without
passengers and cargo.
The tire bead contains
A pneumatic
:
The
:
The weight of
:
DOT Markings A code
:
molded into the sidewall of
a tire signifying that the tire
is in compliance with the U.S.
Department of Transportation
(DOT) motor vehicle safety
standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.
GVWR Gross Vehicle Weight
:
Rating. See Vehicle Load
Limits on page 8-12.
GAWR FRT Gross Axle
:
Weight Rating for the front axle.
See Vehicle Load Limits on
page 8-12.
GAWR RR Gross Axle
:
Weight Rating for the rear axle.
See Vehicle Load Limits on
page 8-12.