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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 typ ical in those seasons. Audi recom-
mends using w inter t ires during t he win-
Glossary of tire and loading terminology
Accessory weight
means t he comb ined we ight (in excess of
those standard items which may be rep laced)
of automatic tra nsmission, power steering,
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 t he ratio of the height to the width of
the tire in percent. Numbers of 55 or lower in-
dicate a low sidewall for improved steer ing re-
sponse and better overall handling on dry
pavement .
Bead
means the part of the tire t hat 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 t he strands forming the plies in the
tire.
ter months. Low tempe ratu res signifi-
cantly decrease the elasticity of summer
tires, which affects traction and braking
ability. If summer tires are used in very
cold temperatures, cracks can form on
the tread bars, resulting in permanent
tire damage that can cause loud drivi ng
noise and unbalanced tires. Audi is not
responsib le for this type of damage.
- Burn ished, polished or chromed rims
must not be used in winter weather. The
surfa ce of t he rims does not have suff i-
cient cor rosion prote ct ion for this and
could be permanen t ly damaged by road
salt or simi lar substances. This damage
is not covered by war ranty.
Cold tire inflat ion pressure
means t he t ire pressure recommended by the
vehicle manufacturer for a tire of a designated
size that has not been driven for more than a
couple of miles (ki lometers) at low speeds in
the three hour period before the tire pressure
is measured or adjusted.
Curb weight
means the weight of a motor vehicle w ith
standard equipment including the maximum
capacity of fuel, oil, and coolant, air cond i-
tion ing and additional weight of optiona l
equipment.
Extra load tire
means a tire design to operate at higher loads
and at higher inflation pressures than the cor-
responding standard tire. Extra load tires may
be identified as "XL", "x l", "EXTRA LOAD", or
"RF" on the sidewall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single
axle system, measured at the tire-ground in-
terfaces.
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