Audi TT Coupe 2009 Owner's Manual page 253

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Tires and wheels
-
_____________
.:.....::...=..____:__:_:_:_=-=----
&
WARNING (continu
ed)
All four wheels must be fitted with radial tire
s
of the same type
,
size (rolling circumference
)
and the same tread pattern
.
Driving
with different t ires reduces vehicle 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 example with winter tires
-
only use the spare
tire for a short period of time and drive with extra
care.
Refit the
norm al road wheel as soon as safely possible
.
Never drive faster than the maximum speed for which the tires
on your vehicle are rated because tires that are driven faster than
their rated speed can fail
suddenly.
Overloading tires cause heat
build-up,
sudden tire
failure,
including a blowout and sudden deflation and loss of control.
Temperature grades apply to t ires that are properly inflated and
not over or underinflated
.
For te chnical reasons it is not always possible to use wheels
from other vehicles
-
in some cases not even wheels from the
same vehicle model.
If you install wheel trim discs on the vehicle wheels
,
make sure
that the air flow to the brakes is not
blocked.
Reduced airflow to
the brakes can them to overheat
,
increasing stopp ing distances
and causing a collision
.
Run flat tires may only be used on vehicle
s
that were equipped
with them at the fa
ctory.
The vehicle must have a chassis designed
for run flat tires and a factory -installed tire pressure monitoring
system* that indicates a loss of tire pressure. Incorrect use of run
flat tires can lead to vehicle damage or accidents
.
Check w ith an
autho rized Audi dealer or tire specialist 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 wheel
s.
Mixing tire types is not permitted
.
0
Note
For techn ica
l
reaso ns, it is not genera lly poss ib le to use t he
whee
l
rims from other vehicles. This can hold true fo
r
wheels of
the
same vehicle type
.
If the spare t ire is
d
ifferent from the tires that you have mounted
on your vehicle
(f
o
r
example win
t er ti
res or wide profile tires), then
use the spa re tire for a short period of time on ly and drive with extra
care. Replace t
he fl at
t
ir
e w ith
th
e tire matching the others o
n
your
vehic
le
as soon as possib
le.
If
you should put different whee ls and tires on your ve
h
ic le (e.g.
winter wheels and tires), you must be certain that the whee ls and
t
ires are co
m pat ibl
e w ith
th
e tire pressure mon itor
i ng
syste
m
*.
Otherwise the system w ill reg ister a malfunction
and a
fau
lt
m
essage w ill be d isplayed
.
For
m
ore
i
nfo rma
ti
o
n,
co ntact your Aud
i
dea
ler.
0
Note
When installing new tires, be
careful
not to damage the va lves or
tire p ressu re
m
on
ito
ring system senso rs*
.
Never drive without
the
va lve stem cap. The valves could get
da
m
age
d
.
If the sensors must be replaced, then
the
valve must also be
replaced at the same
ti
me.
ci>
For the sake of the environment
Disp
ose
of
o ld
tir
es in acco rdance with
the
local requ ireme nts
.
Uniform
tire quality
grading
Tread wear
Traction AA A B C
Temperature A B C
Vehicle care
I
t

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