Table of Contents
Advertisement
2 9 0
T i re s and w heel s
driving a few yards and correct if neces-
sary . Follow the instructions from the
snow cha in manufacturer when doing so .
- If the Adaptive Air Suspension* should
malfunction, do not mount or use snow
chains because the vehicle will be ex-
tremely low. If you do dr ive with snow
chains on while the vehicle is at this lev-
el, the snow chains might severely dam-
age the wheelhouse and other parts of
the veh icle.
(!)
Tips
Where snow cha ins are mandatory oncer-
tain roads, this normally also applies to
veh icles with all-whee l dr ive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the
factory installed rims. If different rims are fit -
ted, the correct wheel bolts with the right
length and correctly shaped bolt heads must
be used. This ensures t hat wheels a re fitted
secure ly and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bolts from a different vehicle - even if it
is the same mode l <=?page 318.
.&_
WARNING
Improperly tightened o r maintained wheel
bolts can become loose causing loss of
contro l, a collision and serious persona l in-
jury.
- Always keep the wheel bolts and the
threads in the wheel hubs clean so the
wheel bolts can turn easily and be prop-
erly t ightened.
- Never grease or oil the wheel bo lts and
the threads in the wheel hubs. They can
become loose while driving if greased or
oiled, even if tightened to the specified
torque.
- Only use wheel bolts that be long to the
rim being installed .
- Never use different wheels bolts on yo ur
veh icle.
- Always maintain the correct tightening
torque for the whee l bolts to reduce the
risk of a whee l loss. If the tightening tor -
que of the wheel bolts is too low, they
can loosen and come out when the vehi-
cle is mov ing. If the tightening torque is
too high, the wheel bolts a nd threads
can be damaged and the whee l can be-
come loose.
(D
Note
The specified torque for the wheel bolts is
120 ft lb (160 Nm) with a to le rance of
± 7,4 ft lb( ± 10 Nm) . Torque wheel bolts
diagonally. After changi ng a wheel, the
torque m ust be che cked as soon as possi-
ble with a to rque wrenc h - preferab ly by an
a uthorized Audi dea le r or q ualified work-
shop.
Low aspect ratio tires
Your Audi is factory-equipped
with low aspect
ratio tires. These tires have been tho roughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and hand ling under a variety of d riving condi-
tions . Ask your au t hor ized Audi dealer for
more de t ails .
The low aspect ratio of these t ires is ind icated
by a numera l of 55 or less in the tire's s ize
designation. The numeral rep resen t s the ratio
of the ti re's sidewa ll height in relation to its
tread width exp ressed in percentage . Conven -
t iona l tires have a he ight/width ratio of 60 or
more.
The performance of low-aspect-ratio tire s is
particularly sen s itive to improper inflation
pressure. It is therefo re important that low
aspect ratio tires are inflated to the specified
pressure and th at the inflation pressure is
regularly checked and mainta ined. Tire pres-
s ures should be checked at least once a
..,.
Advertisement
Table of Contents
