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190
T i re s and w heel s
- Never mount used tires on your vehicle if
you are not sure of their "previous histo-
ry." Old used tires may have been dam-
aged even though the damage cannot be
seen that can lead to sudden t ire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when driving, al-
ways stop as soon as it is safe to do so
and check the wheels and tires for dam-
age.
(D
Note
Please note that summer and winter tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight
means the comb ined we ight (in excess of
those standard items which may be rep laced)
of au t oma t ic tra nsmission, power steer ing,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory -installed equip-
ment (whether installed or not) .
Aspect ratio
means the ratio of the he ight to the w idth of
the tire in percent . Numbers of 55 or lower in-
dicate a low sidewall for improved steering re-
sponse and better overall handling on dry
pavement .
Bead
means the part of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead separation
means a breakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire .
typ ica l in those seasons . Audi recommends
using winter tires during the winter
months . Low temperatures
signif icant ly
decrease the e lasticity of summer tires,
which affects tract ion and brak ing ability.
If summer tires are used in very cold tem-
peratures, cracks ca n form on the tread
bars, res ulting in permanent tire damage
that can cause loud driving no ise and un-
balan ced t ires. Audi is not responsible for
th is type of damage .
Cold tire inflation pressure
means the t ire pressure recommended by the
vehicle manufacturer fo r a tire of a des ignated
size that has not bee n driven for more than a
coup le of miles (kilometers) at low speeds in
the three hour period before the tire press ure
is measured or adjusted.
Curb weight
means the we ight of a motor vehicle w ith
standard equipment including the max imum
capacity of fuel, oil, and coolant, air condi -
tioning and additional weight of optiona l
equipment.
Extra load tire
means a t ire designed to ope rate at higher
loads and at highe r inflation pressu res than
the corresponding standard tire. Extra load
tires my be identified as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Gross Axle Weight Rating ("GAWR ")
means the load -carry ing capacity of a single
axle system , measured at the tire-ground in-
terfaces.
Gross Vehicle Weight Rating (" GVWR ")
means the maximum total loaded we ight of
t he vehi cle.
.,.
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