-~_ T_ir_e_s_ a_n_ d_ w_ h_e_e_ls _______________________________________________ _
& WA RNI NG (continued)
• Tires age even if they are not being used and can fail suddenly ,
especially at high speeds . Tires that are more than 6 years old can
only be used in an emergency and then with special care and at low
s peed .
Glossary of tire and loading terminology
Accessory weight
means the combined we ight (in excess of those sta nda rd items which
may be rep lace d) of automatic transmission, power steering, power
bra kes, powe r windows , power seats, radio, and heater, t o the extent
that these items are avai lab le as factory- installed equipment
(whet he r insta lled or no t).
Aspect ratio
me a ns the ratio of t he he ight to t he widt h of the t ire in percent .
Numbe rs of 55 or lower indicate a low sidewa ll for improved steer ing
respo nse an d be tt er overa ll handling on dry pavemen t .
Bead
means the part of the tire that is made of stee l wires , wrap ped o r
re inforced by ply cords and that is shaped to fit the rim.
Bead separation
means a brea kdown of the bon d between components in the bead .
Cord
means the st rands forming t he plies in t he tire.
& WARNING (continued)
• Never mount used tire s on your vehicle if you are not sure of
their "previous history ." Old used tires may have been damaged
eventhoughthedamagecannotbeseenthatcanleadtosudden
tire failure and loss of vehicle control.
• If you notice unusual vibration or if the vehicle pulls to one side
when driving, alway s stop as soon as it is safe to do so and check
the wheels and tires for damage. •
Cold tire inflation pressure
means the t ire pressure recommended by the vehicle ma nufa cturer
for a tire of a des ignated size t hat has not been driven for more than
a couple of miles (kilomete rs) at low speeds in t he t hree ho ur pe riod
before the tire pressure is measured or adj usted.
Curb weight
mea ns the weig ht of a motor vehicle wit h standard equ ipment
including the max imum cap acity of f ue l, oil, a nd coo lan t, air condi -
tioning and additiona l weight of optional equipment.
Extra load tire
means a tire design to operate at higher load s and at higher inflation
pressures t han the correspo nd ing standard tire. Extra load tires may
be identified as "XL", "xl", "EXTRA LOAD", or "RF" on the sidewal l.
Gross Axle Weight Rating ( " GAWR ")
means the load -carrying capacity of a s ingle axle system, measured at
t he t ire-grou nd inte rfaces .
Gross Vehicle Weight Rating ("GVWR")
means the max imum total loaded we ight of the vehicle .
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