Kia EV9 2024 Manual page 577

Maintenance
heat when tested under con -
trolled conditions on a specified
indoor laboratory test wheel.
Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life,
and excessive temperature can
lead to sudden tire failure.
Grades B and A represent higher
levels of performance on the lab -
oratory test wheel than the mini -
mum required with law.
Tire terminology and defini -
tions
Refer to the following for detailed
definitions of the terms that are
found in the tire description.
Air Pressure: The amount of air
inside the tire pressing outward
on the tire. Air pressure is
expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight: The com -
bined weight of optional acces -
sories. Some examples of
optional accessories are auto -
matic transaxle, 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 rein -
forcing 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 alter -
nate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure: The amount
of air pressure in a tire, mea -
sured in pounds per square inch
(psi) or kilopascals (kPa) before a
tire has built up heat from driv -
ing.
Curb Weight: The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil
and coolant, but without passen -
gers or cargo.
DOT Markings: The DOT code
includes the TIN, (an alphanu -
meric designator which can also
identify the tire manufacturer,
production plant, brand and date
of production.)
GVWR: Gross Vehicle Weight
Rating
GAWR FRT: Gross Axle Weight
Rating for the Front Axle.
GAWR RR: Gross Axle Weight
Rating for the Rear axle.
Intended Outboard Sidewall:
The side of an asymmetrical tire
that must always face outward
when mounted on a vehicle.
Tires and wheels
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