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27 4
Tir es a nd w h ee l s
Bead
Extra load tire
means the part of the tire that
means a tire design to operate
is made of steel wires, wrapped
at higher loads and at higher
or reinforced by ply cords and
inflation pressures than the
that is shaped to fit the rim .
corresponding
standard tire .
Bead separation
Extra load tires may be identi-
fied as "XL", "xl", "EXTRA
means a breakdown of the bond
LOAD", or "RF" on the sidewall.
between components
in the
bead .
Gross Axle Weight Rating
(" GAWR")
Cord
means the load-carrying capaci-
means the strands forming the
ty of a single axle system,
plies in the tire .
measured at the tire-ground
in-
Cold tire inflation pressure
terfaces .
means the tire pressure recom-
Gross Vehicle Weight Rating
mended
by
the vehicle manu-
("GVWR ")
facturer for a t ire of a designat-
means the maximum total
ed size that has not been driven
loaded weight of the vehicle.
for more than a couple of miles
Groove
(kilometers) at low speeds in
the three hour period before
means the space between two
the tire pressure is measured or
adjacent tread ribs.
adjusted.
Load rating (code)
Curb weight
means the max imum load that
means the weight of a motor
a tire is rated to carry for a giv-
vehicle with standard equip -
en inflation pressure . You may
ment including the maximum
not find th is information on all
capacity of fuel, oil, and cool-
tires because it is not required
ant, air condit ioning and addi-
by law.
...
tional weight of optional equip-
ment.
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