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Chevrolet BOLT EV Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12163003) - 2019 - crc - 5/18/18
Vehicle Care 283
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.
Cold Tire Pressure
: The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire Pressure
0 285.
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 alphanume ric
designator which can also
identify the tire manufacture r,
production plant, brand, and
date of production.
GAWR FRT
: Gross Axle Weight
Rating for the front axle. See
Vehicle Load Limits 0 201.
GAWR RR
: Gross Axle Weight
Rating for the rear axle. See
Vehicle Load Limits 0 201.
GVWR
: Gross Vehicle Weight
Rating. See Vehicle Load Limits
0 201.
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.
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