2008 AUDI S8 torque

Tires and wheels 11111 --------------------------------------------
•
Wheel bolts
Wheel bolts must al wa ys be tightened to the correc t
tor que .
The design of wheel bo lts is matched to the factory installed rims. If
di fferent r ims a re fitted, t he co rrect w heel bo lts wi th the rig ht len gth
and correct ly shaped bolt heads m ust be used. This ensures that
w he els a re fitt ed se cu rel y and that t he bra ke syste m functi on s
correctly.
In certa in ci rc ums ta nces, yo u may no t use wheel bo lts fr om a
differ ent vehicle - eve n if it is the sa me
model=:> page 382.
& 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 bo lts is 9 0 ft lb (12 0 N m) with a
t olerance o f± 7,4 ft lb(± 10 Nm). T orque whee l bolts diago nally.
After changing a whee l, the torque must be checked as soon as possible with a torque wrench
-preferably by an authorized Audi
dea ler o r qua lif ied wo rksho p.•
Low aspect ratio tires
You r Aud i is fact ory- eq uip pe d w it h lo w aspect rati o tire s. T hese tir es
hav e been thorough ly t ested and been se lect ed specifical ly for your
mod el for thei r supe rb pe rf or manc e, r oad f eel an d ha nd ling under
a variety of driving conditions. As k your authorized Audi d ealer for
m or e de tails.
The low aspect rat io o f th ese t ires is indicat ed by a nume ra l of 55 or
less in the tire's size designatio n. The numeral represents the ratio
o f t he tir e's s idewa ll he ig ht in r ela ti on to it s tread w idt h ex pressed
in percentage . Conventiona l tires have a height/width ratio of 60 or
more.
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
inflation pressure is regularly checked and maintained . Tire pres­
sures should be checked at least once a month and alway s before a
long
trip :::::, page 331, "Checking tire pressure" .
What you can do to avoid tire and rim damage L ow a spect ratio tires can be damaged mo re easily by impact with
pot ho les, cu rbs, gull ies o r ridge s o n th e road, part icular ly if th e tire
is underinf lated .
I n or der to mini mize th e occurren ce of i mpac t da mag e to the tires
of your vehicle, we recommend that you observe the fol lowing
pr ecaut ions :
• Alwa ys m aint ain recom mended inflatio n pressu res . C he ck you r
t ire p res su re eve ry 2,000 mi les (3, 000 k m) and add ai r if neces sary .
• D rive carefully on roads with potho les, deep gullies or ridges .
The impac t from d riving th rough or ove r such o bstacles can
da mage you r tir es . Imp act with a curb may a lso caus e damage to
your tire s. .,_
Vehicle care

-What do I do now? PW-------------------------
&, 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] 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 7 88. •
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 188.
2. Remove the decorative wheel cover*. For more details
see also
=> page 353, "Decorative wheel covers" or
=> page 353, "Wheels with wheel bolt caps" .
3. Loosen the wheel bolts => page 354.
4. Locate the proper mounting point for the jack and align
the jack below that
point=> page 354.
5. Lift the car with the jack=> page 354.
6. Remove the wheel with the flat tire and then install the
spare
=> page 356 .
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 354.
10. Replace the decorative wheel cover*.
11. Deactivate the vehicle jacking mode => page 188 .
& WARNING
Always read and follow all WARNINGS and information ~ & in
"Raising the vehicle" on
page 354 and ~ page 357. •
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 . .,_

What do I do now? -
----------------
•
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 336, "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 Nm}.
• 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 336, "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 .
• Do not use commercially available tire sealants. Otherwise, the
electrical components of the tire pressure monitoring system will
no longer work properly and the sensor for the tire pressure moni ­
toring system will have to be replaced by a qualified workshop. •
Do -it -yourself service

___ D_ a_ ta ______________________________________________________ _
Data
Applies to vehicles: with 8 -cylinder engine and all wheel drive
350 hp, a-cylinder engine, with all wheel drive
Engin e da ta
Max imum output SAE net
Maximum torque SAE net
No . of cy linders
Disp lacement
Stroke
Bore
Compress ion ratio
Fuel
Dimension s (appro x.)
Length (with licence plate bracket)
Width (across mirro rs)
He ight (un loaded)
T urning circle diameter (curb to curb)
Capa citie s (a pprox.)
Fuel t ank
-Total capacity
- Reserve (of total capacity)
Wind shi eld and h eadlight wa sh er fluid contain er
Engine oil
with filter change hp@ rpm
lb -ft@ rpm
CID (cm
3 )
in (mm)
in (mm)
350@ 6800
325 @3500
8 cylinder
254 (4163)
3.65 (92.8)
3.33 (84.5) 12.5: 1
Premium unleaded (91 AKII Recommended fo r maximum engine per formance . Fur ­
ther
details ::::;, page 307, "Gasoline"
in (mm)
in (mm)
in (mm)
ft. (ml
A8 = 199.3 (5062)
AB = 79 .8 (2028)
A8 = 56.9 ( 1444)
AB = 41.0 (12.5)
gal (liters)
gal (liters)
quarts (liters)
quarts (liters)
A8 L = 204 .4 (5 192)
AB L = 79 .8 (2028)
A8 L = 57.3 (1455)
A8L =41.7(12.7)
23.8 (90.0)
2.4 (9 .0)
5.1 (4.8)
9.3
(8.8) •

_____________________________________________________ D_a_ t_ a __ llJIII
App lies to veh ic les: w it h 12-cy linder eng ine and a ll whee l dr ive, lon g wheel base (LW B)
450 hp, 12-cylinder engine, with all wheel drive, long wheel base
En gin e data
Maximum output SAE net
Maximum torque SAE net
No. of cy linders
Displacement
Stroke Bore
Compression ratio Fuel
Dim ension s (appro x.)
Lengt h (wi th lice nce p late bracket)
Width (ac ross mirrors)
Height (unloaded)
Turning circle diameter (curb to cu rb)
Ca pac itie s (a pprox.>
Fuel tank
-Total capac ity
-Reserve (of total capacity)
Windshield and headlight washer fluid container
Engine oil
with fi lte r change hp@rpm
lb-ft@ rpm
CID (cm
3l
in (mm)
in (mm) 450@ 6200
428 @ 4000-4700
12 cy linder
366 (5998)
3 .55 (90 .2)
3 .3 1 (84 .0)
1 1.0 : 1
Premium unleaded (91 AKI! Recommended for maximum engine performance . Fur ­
t her
de tails => page 301, "Gasoline"
i n ( mm)
in (mm)
in (mm)
ft. (ml 20
4.4 (5192)
79.8 (2028)
57 .3 (1455)
41.7 (12 .7)
gal (liters)
gal (liters)
quarts (liters)
quarts (liters ) 2
3 .8 (90 .0)
2 .4 (9 .0)
5.1 ( 4.8)
13 .2 (1 2 .5)
•
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

-Alphabetical index
---=------------------------------------------------
u
Undercoating 294
Unfastening safety belts ...... ...... . 215
Un idirect iona l tires ....... ....... .... 324
Uniform tire quality grading
Un locking 340
Power locking switch . . . . . . . . . . . . . . 53
Rear lid/trunk lid ...... .... ...... .. 55
Remote control ................... 51
Using the key .. .... ....... .... .... 52
V
Vanity mirror
front ... .. .... .... .... ... .... .... 77
rea r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Vehic le elec trical system ...... ...... .. 18
Vehic le identification label ........ ... 374
Vehicle Identification Number (VI N) .... 374
Vehicle jack .... ... .. .... .... ... 349, 354
Vehicle literature ... .. .. ..... .. .... ... 5 Brake system
.... . .. .. .... ... .... . 22 Wheel bolts
Cruise control ..... .... ... .... .... 21 Torque ... .... .... .... ... .... ... 343
Electromechanica l parking brake .... 22 Wheels ............................ 324
Electronic power control .. .... .... . 18 Cast alloy ....................... 293
Electronic stabilization program (ESP) 18 Checking tire pressure ............ 331
Fog lights .. ...... .... ...... ... .. . 19 Cold tire inflation pressure ...... .. 328
Generator . . . . . . . . . . . . . . . . . . . . . . . . 18
High beam . . . . . . . . . . . . . . . . . . . . . . . 19
Instrument cluster . . . . . . . . . . . . . . . . . 12
Ma lfunction Indicator Lamp (MIU . ... 20
Rear fog light s ........ ........ .... 19
Safety belt .... .... .... .... .... ... 20
Tir e pressure monitoring system .... 20
Turn signals ... .... .... .... .... ... 19
Warranty coverages ...... .... .... ... 380
Washer reservoir .. ... .... .... .... ... 323
Washing ...... .... ..... ............ 288
Automatic car wash ...... .... .... 289
by hand .. .... ... .... .... .... ... 289
with a power washer ... .. .. ....... 290
Washing the vehicle ..... ...... .... .. 288
Waxing ....... ... .... .... .... .... .. 291 Genera
l notes ....... ... .... .... .. 324
Glossary of tire and loading terminology .
325
New tires and wheels .. ........... 336
Tires and vehicle load limits ....... 333
When must a safety belt be replaced? .. 212
When must the airbag system be inspected?
229
When should I ad just the tire pressures?
332
When should I check the tire pressures? 332
Where can I find the tire pressures for my
car? ... .. .... .... .... ..... .. ... 331
Why safety belts? ...... ... ... ... 209, 21
o
Windows
Cleaning ........................ 292
Vehic le transpo rt .... .... .... ...... . 369 Wear indicator .... .... ... .... .... ... 335 Convenience open
feature ...... .... 64
Defogging ....... ........ ....... 120
Vehic le-care products ... .... .... .... 288 Weatherstrips ... ....... ...... .... .. 293
Venti lated seats .. .... .... ... .... ... 118 Weights
..... .... .... .... .... ... ... 375
w
Warning/indicator lights ... .. .... .... . 16
Adaptive Air Suspension ....... . 20, 21
Adaptive Cruise Control .. .. .. .... . 145
Airbag system . . . . . . . . . . . . . . . . . . . . 19
Anti-lock brake system (ABS) . . . . . . . . 21 What happens
if you wear your safety belt too
loose? ... .... .... .... .... .... .. 214
What happens to unbelted occupants? . 211
What impairs driving safety? ..... ..... 199
What should I do after changing a wheel?
332
What should I do after replacing wheels?
332 Defrosting
.... .... .... ... .... ... 120
Rapid defrosting/defogging .... .... 122
Windshield defogger/defroster .. ...... 123
Windshield washer fluid Low level ...... ............... .... 35
Windshield wipers Installing new wiper blades . .... .... 82
In termittent wiping .... ... . .... .. .. 80
One -tap wiping ........ .... .... ... 80