wheel bolt torque AUDI S6 2008 Owners Manual

Tires and wheels -________________ w-.
•
Remove wheel center covers and trim discs before putting snow
chains on you r veh icle =>
(D. For sa fety reasons c ove r cap s m ust
then be fitted over the wheel bo lts . These are avai lable from autho ­
r ized Aud i deale rs.
& WARNING
Using the wrong snow chains for your vehicle or in stalling them
incorrectly can increase the risk of loss of control leading to
serious personal injury.
• Snow ch ains are available in different sizes . Always make sure
to follow the instructions provided by the snow chain manufac ­
turer .
• When driving with snow chains never drive faster than the
speed permitted for your specific snow chains .
• Always observe local regulations .
0 Note
• Remove sn ow chai ns b efore d rivin g on roads not cove red w ith
snow to avoid damaging tires and wearing the snow chains down
u n n ecessa r i ly.
• Snow chains , which come into d irect contact with t he whee l rim,
ca n scratc h or da mage it. T herefore, ma ke sur e tha t th e snow chains
are suitably covered.
• I f the Adaptive Air Suspensio n* shou ld malfunction, do no t
mount or use snow chains because the vehicle will be extremely
l o w. I f yo u do drive w ith snow c hai ns o n w hi le t he ve hicle is a t thi s
level, the snow cha ins might severe ly damage the wheelhouse and
ot her parts o f the vehicle.
[ i ] Tips
W her e sn ow c hai ns are manda tory on certa in roa ds, t his no rm ally
a lso app lies to vehic les with Al l Wheel Drive. •
Wheel bolts
Wheel bo lts must alw ays be t ig hte ned to the correct
to rq ue .
The design of wheel bo lts is matched to the factory instal led rims. If
d iffere nt rim s are fitted, the corr ect w heel bo lts w it h t he rig ht le ngth
and correctly shaped bolt heads must be used. This ensures that
w he els are fitted securely and that the brake sys tem func tions
correctly.
I n certa in c ircums ta nces, you may not use wheel bo lts from
a
different vehicle -even if it is the same model=> page 368.
& WARNING
Improperly tightened or maintained wheel bolts can become loose
causing loss of control , a collision and serious personal injury .
• Always keep the wheel bolts and the threads in the wheel hubs
clean so the wheel bolts can turn easily and be properly tightened.
• Never grease or oil the wheel bolts 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 belong to the rim being installed .
• Never use different wheels bolts on your vehicle.
• Always maintain the correct tightening torque for the wheel
bolts to reduce the risk of a wheel loss.
If the tightening torque of
the wheel bolts is too low , they can loosen and come out when the
vehicle is moving . If the tightening torque is too high, the wheel
bolts and threads can be damaged and the wheel can become
loose .
0 Note
The specified torque for the wheel bolts is 9 0 ft lb (120 Nm) with a
to lera nce of± 7,4 ft lb(± 10 Nm). Torque whee l b o lt s d ia go nally.
Af ter changing a wheel, the torque must be checked as soon as .,_
Vehicle care I t •

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•
& WARNING (continued)
front wheel is lifted off the ground, placing the Automatic Trans­
mission in "P" {Park) will
not prevent the vehicle from moving.
• Before you change a wheel, be sure the ground is level and firm.
If necessary, use a sturdy board under the jack.
• After installing the spare wheel, make sure that you replace the
flat tire/wheel in its storage area properly and tighten the knurled
retaining screw securely. •
Changing a wheel
When you change a wheel, follow the sequence described
below step-by-step and in exactly that order.
1. Activate the vehicle jack mode (only vehicles with Adap ­
tive Air Suspension)~
page 184.
2. Remove the decorative wheel cover*. For more details
see also ~
page 340, "Decorative wheel covers" or
~ page 340, "Wheels with wheel bolt caps".
3. Loosen the
wheel bolts~ page 341.
4. Locate the proper mounting point for the jack and align
the jack below that point~
page 341.
5. Lift the car with the jack ~ page 341.
6. Remove the wheel with the flat tire and then install the
spare
~ page 343.
7. Tighten all wheel bolts lightly.
8.
Lower the vehicle with the jack.
9. Use the wheel bolt wrench and
firmly tighten all wheel
bolts~
page 341 .
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jack mode (only vehicles with
Adaptive Air Suspension)~
page 184.
& WARNING
Always read and follow all WARNINGS and information => & in
uRaising the vehicle" on
page 341 and=> page 344. •
After changing a wheel
A wheel change is not complete without the doing the
following.
- Store and secure the wheel you replaced in the spare
wheel well.
- Replace the tools and the jack in their proper location.
- Check the tire pressure on the spare wheel immediately
after mounting it.
- As soon as possible, have the
tightening torques on all
wheel bolts checked with a torque wrench. The correct
tightening torque is 90 ft lb (120 Nm).
- Have the flat tire
replaced as soon as possible.
[ i] Tips
• If you notice that the wheel bolts are corroded and difficult to
turn while changing a tire, they should be replaced before you check
the tightening torque.
• Drive at reduced speed until you have the tightening torques
checked .•
Do-it -yourself service

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hub. Remove all dirt from these surfaces before remounting the
wheel. •
Tires with unidirectional tread design
Tires with unidirectional tread design must be mounted
with their tread pattern pointed in the right direction.
Using a spare tire with a tread pattern intended for use
in a specific direction
When using a spare tire with a tread pattern intended for use in a
specific direction, please note the following:
• The direction of rotation is marked by an arrow on the side of the
tire .
• If the spare tire has to be installed in the incorrect direction, use
the spare tire only temporarily since the tire will not be able to
achieve its optimum performance characteristics with regard to
aquaplaning, noise and wear.
• We recommend that you pay particular attention to this fact
during wet weather and that you adjust your speed to match road
conditions.
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible to restore the handling advantages of a
unidirectional tire. •
Notes on wheel changing
Please read the information~ page 325, "New tires and replacing
tires and wheels " if you are going to use a spare tire which is
different from the tires on your vehicle.
After you change a tire:
• Check the tire pressure on the spare immediately after installa­
tion . •
Have the wheel bolt tightening torque checked with a torque
wrench as soon as possible by your authorized Audi dealer or a qualified service station .
• With steel and alloy wheel rims, the wheel bolts are correctly
tightened at a torque of 90 ft lb (120 Nml.
• If you notice that the wheel bolts are corroded and difficult to
turn while changing a tire, they should be replaced before you check
the tightening torque.
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible. Remount the wheel cover.
Until then, drive with extra care and at reduced speeds .
& WARNING
• If you are going to equip your vehicle with tires or rims which
differ from those which were factory installed, then be sure to read
the information
~ page 325, "New tires and replacing tires and
wheels".
• Always make sure the damaged wheel or even a flat tire and
the jack and tool kit are properly secured in the luggage compart­ ment and are not loose in the passenger compartment.
• In an accident or sudden maneuver they could fly forward,
injuring anyone in the vehicle .
• Always store damaged wheel, jack and tools securely in the
luggage compartment . Otherwise, in an accident or sudden
maneuver they could fly forward, causing injury to passengers in
the vehicle .
0 Note
Do not use commercially available tire sealants. Otherwise, the elec­
trical components of the tire pressure monitoring system* will no
longe r work properly and the sensor for the tire pressure moni­
toring system will have to be replaced by a qualified workshop. •