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298
Tires and wheels
Sustained high temperature can cause the
materia l of the tire to degenerate and reduce
tire life, and excessive temperature can lead
to sudden tire failure <=> ,& .
The grade C corresponds to a level of perform-
ance which all passenger car tires must meet
under the Federal Motor Vehicle Safety Stand -
ard No.
109.
Grades Band A represent higher
levels of performance on the laboratory test
wheel than the minimum required by law .
A
WARNING
The traction grade assigned to this t ire is
based on stra ight-ahead braking traction
tests, and does not include acceleration,
cornering, hydrop laning or peak traction
characteristics.
A
WARNING
,.,.____
The temperature grade for this tire is es-
tablished for a tire that is properly inflated
and not overloaded. Excessive speed, un-
derinflation, or excessive loading, either
separately or in combination, can cause
heat buildup and possible tire fa ilure.
Winter tires
Winter tires can improve vehicle handling on
snow and ice. At temperatures below 45 °F
(7 °C) we recommend changing to winter
tires .
In some heavy snow areas, local governments
may require true winter or "snow" tires, those
with very deeply cut tread. These t ires should
only be used in pairs and be installed on all
four wheels. Make sure you purchase snow
tires that are the same size and construct ion
type as the other tires on your vehicl e.
Your veh icle is equipped with all -wheel drive,
this will improve traction during w inter driv-
ing, even with the standard tires. However, we
strongly recommend that you always equ ip all
four whee ls on your vehicle w ith correctly fit-
ted winter ti res or all-season tires, when win-
ter road conditions are expected. This also im-
proves the vehicle's braking performance and
reduces stopping distances.
Summer tires provide less gr ip on ice and
snow.
Winter tires (snow tires) must always be fitted
on all four wheels .
Ask your authorized Audi dealer or qualified
workshop for perm itted winter tire sizes. Use
only rad ial winter t ires.
Winter tires lose their effectiveness when the
tread is worn down to a depth of
0 .157
inch
(4
mm).
Only drive w ith w inter t ires under winter con-
ditions. Summer t ires handle better when
there is no snow or ice on the roads and the
temperature is above 45 °F (7 °() .
If you have a flat tire, see notes on spare
wheel<=> page 291 .
Please always remember that winter tires may
have a lower speed rating than the tires origi-
nally installed on your vehicle at the time it
was manufactured. Please see <=>page 294,
Speed rating (letter code) for a listing of the
speed rating letter codes and the maximum
speed at which the tires can be driven .
The speed rating letter code (<=> page 2 76) is
on the side wall of the t ire
c>
page 291.
A
WARNING
,.___
Winter tires have maximum speed lim its
that may be lower than your vehicle's max-
imum speed. Always know the maximum
speed before dr iving off. Never drive faster
than the speed permitted for your specific
winter tires. This wi ll cause damage to the
tires leading to an accident and serious
personal injury to you and your passen-
gers.
A
WARNING
'---
-
Driving faster than the maximum speed
for which the winter tires on your vehicle
were designed can cause t ire failure in-
cluding a blowout and sudden deflation,
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