2009 AUDI S8 wheel bolts

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• T he battery inside of the tire pressure sensor has a limited
service life.
• Always drive with the va lve stem caps securely mounted. We
recommend using fac tory insta lled valve stem caps . Ask your autho­
rized Audi dealer to replace lost valve stem caps .
T he installation of replacement tires with steel cord body plies in
the tire sidewall may cause malfunction of the tire pressure moni ­
toring system *, and is not recommended (cord material info rmation
i n molded on the t ire sidewa ll).
A lways check your tire pressure monitoring system * indicator after
replac ing one or more tires on you r veh ic le . If t he tir e pressure
monitoring system * indicator f lashes, or is on, your system is not
wo rking pr ope rly. Your re place ment tire might be i nco m patible wit h
your tire pr essure monitoring system *, or some component of the
t ir e pr ess ure moni toring system * m ay be da maged.
& WARNING
• Using incorrect or unmatched tires and / or wheels or improper
tire and wheel combinations can lead to los s of control , collision
and serious personal injury .
• Alway s use tires , rims and wheel bolts that meet the specifica ­
tions of original fa ctory -installed tires or other combination s that
have been specifically approved by the vehi cle manufacturer .
• Tires age even if they are not being used and can fail suddenly,
espe cially at high speeds . Tire s that a re more than 6 years old can
only be used in an emergency and then with special care and at
lo wer speeds .
• Never mount used tire s on your vehicle if you are not sure of
their "previous history ." Old used tires may have been dam aged
even though the damage cannot be seen that can lead to sudden
ti re failure and lo ss of vehicle control.
• All four wheels must be fitted with radial tires of the same type ,
size (rolling cir cumference ) and the same tread pattern . Driving
& W ARNING (continued )
with different tires redu ces vehicle handling and can lead to a loss
of control.
• 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 dri ve with extra care . Refit the
normal road wheel as soon a s safely pos sible.
• Never drive faster than the ma ximum 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 , su dden tire failure ,
includ ing a blowout and sudden deflation and loss of control.
• Temperature grades apply to tires that are properly inflated and
not over or underinflated .
• For te chni cal reasons it is not always po ssible 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 blo cked . Redu ced airflow to
the brake s can them to overheat , increa sing stopping distances
and causing a collision.
• Run flat tires may only be used on vehicles that were equipped
with them at the fa ctory . The vehicle mu st have a cha ssi s designed
for run flat tires and a factory -installed tire pressure monitoring
s ystem* that indicates a lo ss of tire pressure . Incorrect use of run
flat tires can lead to vehicle damage or accident s. Check with an
authorized Audi dealer or tire specialist to see if your vehicle can
be equipped with run fl at tires . If run flat tires are used , they must
be installed on all four wheels . Mi xing tire types is not permitted.
0 Note
• Fo r techn ica l reaso ns, i t is no t genera lly p oss ibl e to use the
whee l rims from other vehicles . T his can hold true for wheels of the
sa me vehicle type. ..,.
Vehicle care
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Tires and wheels 1111111 ________________________________ ::..:..:....::.=.....::.:..:..:..::..:___:__ _ ___:,___
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Wheel bolts
Wheel bolts mus t alwa ys be tighte ned to t he correct
to rq ue .
The design of wheel bo lts is matched to the factory installed rims. If
di fferent r ims are fitted , th e cor rect whe el bo lts wi th the rig ht l ength
and c orrec tly shaped bolt heads must be used . This ens ures that
w he els a re fitted se cur ely and th at the bra ke syste m functi ons
correctl y.
In cer ta in c ircums tances, yo u ma y not use w hee l bolts fr om a
differ ent vehicle - even if it is the same model~
page 384 .
& 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 s pecified torque for the wheel bolts is 90 ft lb ( 120 N m) with a
to lerance o f± 7,4 ft lb(± 1 0 Nm). Torque whee l bolt s diago nally.
After chang ing a whee l, the torque must be checked as soon as possible with a torque wrench
-preferably by an authorized Audi
d e aler o r qua lifi ed wo rksho p.•
Low aspect ratio tires
You r A ud i is fac tory-eq uippe d w ith low aspect ra tio tire s. T hese tire s
have been thorough ly t ested and b een se lected specifica lly for your
mod el for thei r su p erb pe rf or manc e, r oad f eel an d ha nd ling under
a variety of driving con ditions . As k your authorized Audi d ealer for
m ore de ta ils.
The low aspect rat io o f th ese t ires is indicated by a numer al of 55 or
less in the t ire's size designation. The numeral rep resents the ratio
o f t he t ire's s idewa ll he ig ht in rel ati on to it s tread w idt h ex pressed
in percentage . Conventiona l tires have a height/width ratio of 60 or
mo re.
The performan ce of low -aspe ct-ratio tires is particularly sensitive to
improper inflation pressure . It is therefore important that low
aspect ratio tires are inflated to the specified pressure and that the
inflat ion pressure is regularly checked and ma intained. Tire pres­
sures should be checked at least once a month and always before a
long trip~
page 333, "Checking tire pressure" .
What you can do to avoid tire and rim damage L ow aspect ratio tires can be damaged mo re easily by impact with
po tho les, cu rbs, gull ies o r rid ges o n th e road, particular ly if the t ire
is underinf lated .
I n or der to mini mize th e occurrence of i mpac t da mag e to t he tires
of your vehicle, we recommend that you observe the fol lowing
pr ecaut ions :
• Always ma intain recom mended inflatio n pr essu res . C heck you r
ti re p ressu re eve ry 2,000 mi les (3,000 k m) and add a ir if neces sary .
• D rive carefully on roads with potho les, deep gullies or ridges.
T he impact from d riving th rough or ove r such obstac les can
da mage y our tires. I mpact with a cu rb m ay a lso cause damage to
your tire s. ..,
Vehicle care
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What do I do now? -
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[ i J Tips
If you no longer have your original warning triang le and need to
equip your vehicle with a new one, contact your authorized Audi
dealer for a replacement .•
Jack, tools and spare wheel
Jack
The jack is stored underneath the floor panel in the
luggage compartment.
Fig . 282 Luggage
compartment vehicle
jack
Before stori ng the jack, make sure it is wound back down as far as it
will go.
& WARNING
Improper use of the vehicle jack can cause serious personal inju­
ries.
• Never use the jack supplied with your Audi on another vehicle,
particularly on a heavier one. The jack is only suitable for use on
the vehicle it came with.
& WARNING (continued)
• Using a bumper jack to raise the vehicle will damage the
bumper system. The jack may slip, causing injury.
• Never support your vehicle on cinder blocks, bricks or other
objects. These may not be able to support the load and could
cause injury when they fail.
• Never start or run the engine while the vehicle is supported by
the jack.
• If you must work under the vehicle, always use safety stands
specifically designed for this purpose .
• Never use the hexagonal socket in the handle of the screw­
driver to loosen or tighten the wheel bolts.
• Always make sure the spare tire and even a flat tire are secured
in place and not loose, otherwise they could fly forward , causing
personal injury to passengers in the vehicle in an accident or
sudden maneuver .
[ i J Tips
Before you can raise your vehicle using the jack, you must activate
the jacking mode~
page 191. •
Vehicle care Do-it-yourself service irechnical data

1111 What do I do now? ..._ __________________________________________ _
& 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.
[ i J Tips
Before changing the wheel, you must activate the jacking mode, so
that the automatic controls for the Adaptive Air Suspension do not
make it more difficult to lift the vehicle with the jack =>
page 791. •
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 jacking mode~ page 191.
2. Remove the decorative wheel cover*. For more details
see also
~ page 355, "Decorative wheel covers" or
~ page 355, "Wheels with wheel bolt caps" .
3. Loosen the
wheel bolts ~ page 356.
4. Locate the proper mounting point for the jack and align
the jack below that point~
page 356.
5. Lift the car with the jack~ page 356.
6. Remove the wheel with the flat tire and then install the
spare
~ page 358 .
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 356.
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jacking mode~ page 191.
& WARNING
Always read and follow all WARNINGS and information :::::> 6 in
" Raising the vehicle" on
page 356 and => page 359. •
After changing a vvheel
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 J 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. .,_

What do I do now? -
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• Drive at re duced speed until you have the tightening torques
checked .a
A pplies to ve hic les: wit h deco rat ive w heel covers
Decorative wheel covers
The decorative wheel covers must be removed first to
access the wheel bolts.
Removing
Fig . 286 Changing a
wheel: Removing the
wheel cover
- Insert the hook provided with the vehicle tool kit in the
hole in the hub.
Pull off the decorative wheel cover~ fig . 286. •
App lies to veh ic les: w ith whee l bo lts with caps
Wheels with wheel bolt caps
The caps must be removed first from the wheel bolts
before the bolts can be unscrewed .
Removing
Fig. 287 Changing a
wheel: removing the
wheel bolt caps
-Push the plastic clip provided with the vehicle tool kit
over the w heel bolt cap until it engages.
- Pull on the plastic clip to remove the cap ~ fig. 287.
Refitting
- Place the caps over the wheel bolts and push them back
on.
The caps are to pro tect and ke ep the wheel bolts clean. •
Vehicle care Do-it-yourself service irechnical data

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Loosening and tightening the wheel bolts
The wheel bolts must be loosened before raising the
vehicle.
Loosening
Fig . 288 Changing a
wheel: loosening the
wheel bolts
- Install the wheel bolt wrench over the wheel bolt and
push it down as far as it will go.
Take tight hold of the
end of the wrench handle and turn
the wheel bolts counter-clockwise about
one single turn
in the direction of arrow::::, fig. 288.
Tightening
- Install the wheel bolt wrench over the wheel bolt and
push it down as far as it will go.
- Take tight hold of the
end of the wrench handle and turn
each wheel bolt clockwise until it is seated.
& WARNING
• Do not use force or hurry when changing a wheel -you can
cause the vehicle to slip off the jack and cause serious personal
injuries.
& WARNING (continued)
• Do not loosen the wheel bolts more than one turn before you
raise the vehicle with the jack. -You risk an injury.
[ i] Tips
• Never use the hexagonal socket in the handle of the screwdriver
to loosen or tighten the wheel bolts .
• If a wheel bolt is very tight, you may find it easier to loosen by
carefully pushing down on the end of the wheel bolt wrench with
one foot only . As you do so, hold on to the car to keep your balance
and take care not to slip. •
Raising the vehicle
The vehicle must be lifted with the jack first before the
wheel can be removed.
Fig . 289 Changing a
wheel: mounting
points for the jack ...

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Taking the wheel off/installing the spare
Follow these instructions step-by-step for changing the
wheel
Fig . 291 Changing a
wheel: using the
screwdriver handle
!with the blade
removed) to turn the
bolts
Fig . 292 Changing a
wheel: alignment pin
inside the top hole
After you have loosened all wheel bolts and raised the
vehicle off the ground, remove and replace the wheel as
follows:
Removing the wheel
-Use the hexagonal socket in the screwdriver handle to
completely remove the topmost wheel bolt and set it
aside on a
clean surface => fig. 291. -
Screw the threaded end of the
alignment pin from the
tool kit hand-tight into the empty bolt hole=> fig. 292.
- Then remove the other wheel bolts as described above .
- Take off the wheel leaving the alignment pin in the bolt
hole.
Putting on the spare wheel
- Lift the spare wheel and carefully slide it over the align­
ment pin to guide it in place.
- Use the hexagonal socket in the screwdriver handle to
screw in and tighten all wheel bolts
slightly.
- Remove the alignment pin and insert and tighten the
remaining wheel bolt slightly like the rest.
Turn the jack handle counter-clockwise to lower the
vehicle until the jack is fully released.
- Use the wheel bolt wrench to tighten all wheel bolts
firmly=>
page 356. Tighten them crosswise, from one
bolt to the (approximately) opposite one, to keep the
wheel centered.
[ i ] Tips
Never use the hexagonal socket in the handle of the screwdriver to
loosen or tighten the wheel bolts.
• Pull the reversible blade from the screwdriver before you use the
hexagonal socket in the handle to turn the wheel bolts.
• When mounting tires with
unidirectional tread design make sure
the tread pattern is pointed the right way=>
page 359.
• The wheel bolts should be clean and easy to turn. Check for dirt
and corrosion on the mating surfaces of both the wheel and the .,,_

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•
hub. Remove all dirt from these surfaces before remounting the
whee l.•
Tires with unidirectional tread design
Tires with unidirectional tread design must be mounted
with their tread pa ttern pointed in the ri ght direction.
Using a spar e tire with a tread pattern intended for u se
in a sp ecific di rec tion
When using a spare tire with a tread pattern intended fo r use in a
specific direction, p lease note the following:
• The direction of rotation is ma rked by an arrow on the side of the
tire .
• I f the spare tire has to be insta lled in the incorrect direction, use
the spare tire only temporarily since the tire wi ll 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 you r speed to match road
conditions .
• Replace the flat tire with a new one and have it installed on your
veh ic le as soon as possible to restore the handling advantages of a
un idirectional tire. •
Notes on wheel changing
Please read the information :::::, page 338, "New tires and replacing
tires and whee ls" if you are going to use a spare tire which is
di fferent from the t ires on your veh ic le.
After you change a tire :
• Check the tire pre ssure on the spare immediately after installa ­
tion . • Have the wheel bolt t
ighten ing torque che cked with a torque
wrench as soon as possible by your authorized Audi dealer or a qualified service station .
• With steel and alloy wheel rim s, the wheel bolts are correctly
tighte ned at a torque of 90 ft lb (120 Nm ).
• If you noti ce that the wheel bolt s are corroded and difficult to
turn while changing a ti re , they should be replaced before you che ck
the tightening torque .
• Replace the flat t ire with a new one and have it installed on your
vehicle as soon a s possible . Remount the whee l cover.
Until then , dri ve with extra care and at reduced speed s.
& WARNING
• If you are going to equip your vehi cle w ith tires or r ims which
differ from those which were factory in stalled , then be sure to read
the information :::::,
page 338, uNew tires and repla cing tires and
wheel s".
• Always mak e sure the d am aged wheel or e ven a flat t ire and
the jack and tool kit are properl y secured in the luggage compart ­
ment and are not loose in the pass enger compartment .
• In an a ccident or sudden maneuver they could fly forward ,
injur ing anyone in the vehicle .
• Alway s store damaged wheel , ja ck and tools securely in the
luggage comp artment . Otherwise , in an accident or sudden
m aneuv er they could fly forward , cau sing injury to pas senger s in
the veh icle .
• Do not use commercially available ti re sea lants. Othe rwise, the
ele ctri cal component s of t he tire pres sure mon itor ing system * will
no longer wo rk properly and the sen sor for the tire pre ssure moni ­
tor ing s ystem* w ill have to be replaced by a qualified workshop . •
Do-it -yourself service