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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.
Cold Tire Pressure
: The
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 Inflation - Tire
Pressure on page 5-49.
Curb Weight
: The weight of a
motor vehicle with standard
and optional equipment including
the maximum capacity of fuel,
oil, and coolant, but without
passengers and cargo.
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 Loading the Vehicle
on page 4-28.
GAWR FRT
: Gross Axle Weight
Rating for the front axle. See
Loading the Vehicle on
page 4-28.
GAWR RR
: Gross Axle Weight
Rating for the rear axle. See
Loading the Vehicle on
page 4-28.
Intended Outboard Sidewall
:
The side of an asymmetrical tire,
that must always face outward
when mounted on a vehicle.
Kilopascal (kPa)
: The metric
unit for air pressure.
Light Truck (LT-Metric) Tire
:
A tire used on light duty trucks
and some multipurpose
passenger vehicles.
Load Index
: An assigned
number ranging from 1 to 279
that corresponds to the load
carrying capacity of a tire.
Maximum Inflation Pressure
:
The maximum air pressure to
which a cold tire can be inflated.
The maximum air pressure is
molded onto the sidewall.
Maximum Load Rating
: The
load rating for a tire at the
maximum permissible inflation
pressure for that tire.
Service and Appearance Care 5-47