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- 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 tire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, 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 summe r and winte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight
means the comb ined weight (in excess of
those sta ndard items which may be rep laced)
of au t oma t ic transmission,
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 rat io of t he height t o the w idt h of
the tire in percent . Numbers of 55 or lower in-
dicate a low sidewall for improved steering re-
sponse and better overa ll handling on dry
pavement .
Bead
means the part of the t ire 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 t he bead .
Cord
means the strands forming the plies in the
tire.
Tire s an d wheel s
235
typ ica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures
signif icant ly
dec rease the e lasticity of summer t ires,
which affects tract ion and brak ing ability.
If summer t ires are used in very cold tem -
peratures, cracks ca n form o n the t read
bars , res ulting in perma nen t tire damage
that can cause loud driving noise and un-
bala nced ti res . Audi is not respon sible for
th is type of damage .
Cold tire inflation pressure
means the t ire press ur e recommended
by t he
vehicle manufacture r fo r a tire of a des ignated
size t hat has not bee n d riven for more t han a
coup le of miles (kilometers) at low speeds in
the three hour period before the tire press ure
is m easured or adjusted.
Curb weight
me an s t he we ight of a motor vehicle w ith
st a ndard equipmen t includ ing the max imum
capacity of fuel, oil, and coolant, air condi -
tioning and additional weig ht of optiona l
equipment.
Extra load tire
means a t ire design to oper at e at h igher load s
and at higher inflation pressures than the cor-
responding standa rd tire . Extra load tires may
be identified as "XL", "xl", "EXTRA LOAD", or
"RF" on the sidewal l.
Gross Axle Weight Rating ("GAWR")
me an s t he load-ca rrying capac ity of a single
axle system , measured at the tire -ground in-
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
mea ns t he maximum total loaded we ight of
the vehicle.
.,..
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