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T _ir_ e_ s _ a_n _d _ w _ h _ e_ e _l_ s _______________________________________________
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•
If the spare tire is different from the tires that you have mounted
on your vehicle (for example winter tires or wide profile tires), then
use the spare tire for a short period of time only and drive with extra
care . Replace the f lat tire with the tire matching the others on your
vehicle as soon as possible.
•
If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatib le with the tire pressure monitoring
system.
Otherwise the system will register a malfunction
and a fault
message will be displayed. For more information,
contact your Audi
dea ler.
0
Note
•
When installing new tires, be careful not to damage the valves or
tire pressure monitoring
system sensors.
•
Never drive without the va lve stem cap. The valves could get
damaged.
•
If the sensors must be replaced, then the valve must also be
replaced at the same time.
<i>
For the sake of the environment
Dispose of o ld tires in accordance with the loca l requirements. •
Uniform
tire quality
grading
•
Tread wear
•
Traction AA A B C
•
Temperature A B C
Quality grades can be found where applicable on the tire side wal l
between tread shoulder and maximum section width => page 336,
fig. 276.
For example: Tread wear 200, Traction AA, Temperature A.
A ll passenger car tires must conform to Federal Safety Require-
ments in addit ion to these grades.
Tread
wear
The tread wear grade is a comparative rating based on the wea r rate
of the tire when tested under contro lled conditions on a specified
government test course.
For example, a tire graded 150 wou ld wear one and one half (1 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actua l condi-
tions of their use, however, and may depart significantly
from the
n orm due to variations in driving habits, service practices and differ-
ences in road characteristics
and climate .
Traction
The traction grades, from highest to lowest, are AA, A, Band C.
Those grades represent the tire 's ability to stop on wet pavement as
measured under contro lled conditions on specified government
t est surfaces of asphalt and concrete. A t ire marked C may have
poor traction performance
=:>
& .
Temperature
The temperature grades are A (the highest), B, and C, representing
t he tire's resistance to the genera t ion of heat and its abi lity t o dissi -
pate heat when tested under control led conditions on a specified
indoor laboratory test wheel.
Sustained high temperature can cause the mater ial of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure=> & .
The grade C corresponds to a leve l of performance which all
passenger car tires must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades Band A represent higher levels of
performance on the laboratory test whee l th an the minimum
required by law.
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