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general, the greater the number of plies, the
more weight a tire can support . Tire manufac-
turers also must indicate the materials in the
tire, wh ich include steel, nylon, polyester, and
others .
Maximum Load Rating
This number indicates the maximum load in
kilograms and pounds that can be carried by
the tire.
Tire qualit y grading for tr eadwear,
tract ion, and temperat ure resistance
Tread wear , traction and temperature
grades
¢
page
212.
Maximum Permissible Inflati on Pressure
This numbe r is the greatest amount of air
pressure that should ever be put in the tire
under normal driving conditions .
&
WARNING
- Using incorrect or unmatched tires and/
or whee ls or improper tire and whee l
combinations can lead to loss of contro l,
collision and serious personal injury.
- Always use tires, rims and wheel bo lts
that meet the specifications of orig inal
factory-installed tires or other combina-
t ions that have been spec ifically ap-
proved by the vehicle manufacturer .
- Tires age even if they are not be ing used
and can fail suddenly, especially at high
speeds . Tires that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used ti res on you r 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.
- All four wheels must be fitted with radia l
t ires of the same type, size (roll ing cir-
cumference) and the same tread pattern .
Driving with different tires reduces veh i-
Tire s an d wheel
s
21 1
cle handling and can lead to a loss of
contro l.
- If the spare tire is not the same as the
tires that are mounted on the vehicle -
for examp le with winter t ires - only use
the spare t i re for a short period of time
and drive with extra care . Refit the nor-
mal road wheel as soon as safely poss i-
ble .
- Never drive faster than the max imum
speed for which the tires on your vehicle
are rated because tires that are dr iven
faster than their rated speed can fa il
suddenly.
- Overloading tires cause heat build-up,
sudden tire fa ilure, including a blowout
and sudden deflation and loss of contro l.
- Temperature grades apply to tires that
are properly infla t ed and not over or un-
derinf lated .
- For technical reasons it is not always
possible to use whee ls from other vehi-
cles - in some cases not even wheels
from the same veh icle mode l.
- If you install wheel trim discs on the ve-
hicle wheels, make sure that the air flow
to the brakes is not blocked. Reduced air-
f low to the brakes can them to overheat,
increas ing stopping d istances and caus-
ing a collision .
- Run flat tires may only be used on vehi-
cles that were equ ipped with them at the
factory. The veh icle must have a chassis
des igned for run flat tires and a factory-
installed t ire pressure monitoring sys-
tem that indicates a loss of tire p ressu re.
Inco rrect use of run fla t tires can lead to
vehicle damage or accidents. Check with
an authorized Audi dealer or tire special-
ist to see if your vehicle can be equipped
with run flat tires. If run flat tires are
used, they must be installed on all four
wheels. Mixing tire types is not permit-
ted .
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