2010 AUDI S8 service

Tires and wheels Ill
----------------
If you install rims, which do not have the sensors, or have sensors
w hich are not compa tible, then the tire pressure moni toring sys tem *
w ill not wo rk p roperly. I n this case, t he tire pressure monitor ing
system * wo uld not be ab le to monitor the tire pressure or warn yo u if
it is necessary .
• The battery inside of the tire pressure sensor has a limited service
l ife.
• Always dr ive wit h the
valve stem caps securely mo unted. We
recommend using factory ins ta lled
valve stem caps. As k your autho ­
r ized Audi dea ler to rep lace lost
valve stem caps .
Th e insta llation of repl acement tir es w ith s teel co rd bo dy plies in the
t ire sidewa ll may ca use ma lfunctio n of the tire pressure mo nitoring
system *, and is not recommende d (cord material informat io n i n
molded on the ti re s idewall).
Always check your tire pressure monito ring system* indicator afte r
re plac ing one or mo re tires on your vehicle. If the tire press ure m oni­
to ring system* indicator flashes, or is on, your system is not working
pro perl y. Yo ur repla ceme nt tire might be incomp atible with your t ire
pressure monitoring system*, or some component of the tire pres­
sure mon itor ing system * may be damaged.
& WARNING
• Using incorrect or unmatched tires and / or wheels or improper
tire and wheel combinations can lead to loss of cont rol, collision
and seriou s per sonal injury .
• Always use tires, rims and wheel bolts that meet the specifica­
tions of original fa ctory-in stalled tires or other combination s that
have been specifically appro ved by the vehicle manufacturer.
• Tires age even if they are not being used and can fail suddenly ,
especially at high speeds. Tires that are more than 6 years old can
only be u sed in an emergen cy and then with special care and at
lowe r speeds.
• Never mount used tires on your vehicle if you are not sure of
their "previous history." Old used tires may have been damaged
Safety first
& WARNING (co ntinued )
eventhoughthedamagecannotbeseenthatcanleadtosudden
tire failure and loss of vehicle control.
• All four wheels must be fitted with radial tires of the same
type, size (rolling circumference ) and the same tr ead pattern.
Driving with different t ires reduces vehicle handling and can lead
to a lo ss of control.
• If the spare ti re is not the same as the tires that are mounted
on the vehicle - for example with w inter tires - only use the spare
tire fo r a sho rt pe riod of t ime and drive with extra care. Refit the
normal road wheel as soon as safely possible.
• 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 tire s cause heat build-up, sudden tire failure,
including a blowout and sudden deflation and loss of control.
• Temperature grades apply to tires that are properly inflated
and not over or underinflated.
• For technical reasons it is not always possible to use wheels
from other vehicles - in some c ases not even wheel s 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 stopping distance s
and causing a collision.
• Run flat tires may only be u sed on vehicles th at were equipped
with them at the factory. The vehicle must have a chassis designed
fo r run flat tires and a factor y-in stalled tire pres sure monitoring
system* that indicates a loss of tire pre ssure. 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 flat tires . If run flat tires are used , they must
be installed on all four wheels. Mixing tire types is not permitted . ..,_
Vehicle care Technical data

-Tires and wheels
PW-------------------
0 Note
• For techn ica l reasons, it is not generally poss ible to use the wheel
rims from other vehicles. This can hold true for whee ls of the same
vehicle type.
• If the spare tire is different from the tires that you have mounted
on your vehicle (for example w inter tires or wide profile tires), then
use the spare tire for a short period of time only and drive with extra
care . Replace the flat tire with the tire match ing the others on your
vehicle as soon as possible.
• If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatib le with the tir e pressure monito ring system*.
Otherwise the system will register a malfunction and a fault message
w ill be displayed . For more info rmation, contact your Audi dealer .
0 Note
• When install ing new tires, be careful not to damage the valves or
tire pressure monitoring system* sensors.
• Never drive without the valve stem cap. The valves could get
damaged .
• If the sensors must be replaced, then the valve must also be
replaced at the same time.
<£> For the sake of the environment
Dispose of old tires in accordance with the local requirements. •
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• T emperatu re A B C Quality grades can be found where applicable on the tire side wall
between tread sho
ulder and maximum section width =>
page 318,
fig. 256.
Fo r example: Tread wear 200, Traction AA, Temperature A.
All passenger car tires must conform to Federal Safety Requirements
in addition to these grades.
Tread wear
The tread wear grade is a comparative rating based on the wear rate
of the tir e when tested under controlled conditions on a specified
government test course.
For example, a tire graded 150 would wear one and one half (11/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions
of their use, however, and may depart significantly from the norm
due to variations in driving habits, service practices and differences in
road characte ristics and climate .
Traction
The traction grades, from highest to lowest, are AA, A, Band C. Those
grades represent the tire's ability to stop on wet pavement as
measured under con trolled conditions on specified government test
surfaces of asphalt and concrete . A tire marked C may have poor trac­
tion performance =>& .
Temperature
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissi­
pate heat when tested under controlled conditions on a specified
indoor laboratory test wheel.
Susta ined high temperature can cause the materia l of the tire to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure=>& .
The grade C corresponds to a level of performance which all
passenger car tires must meet under the Federal Motor Vehicle

________________________________________________ T_ i_ re _ s_ a_ n_d_ w_ h_ e_ e_l _s _ ....... JIII
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient air temperature .
• The yellow symbol disappears, when the tire pressure is corrected
and the new pressure is sto red in the system ~
page 330.
• After changing a wheel you have to adjust the tire pressures on all
wheels. In addition, you must then initialize the new tire pressures in
the tire pressure monitoring system~
page 330.
• If
your vehicle is equipped with a spare tire* with a wheel sensor,
the tire will be monitored and the display symbols~
page 328,
fig. 257 or~ page 328, fig. 258 will appear if the pressure is too
low .a
Applies to vehicles: with Tire pr essure mon itoring system
Displaying tire pressures and temperatures
The current status of the tires can be displayed in MMI.
Fig. 259 MMI display:
Tir e pressur e moni ­
to ring system
Vehicle OP-eration
-Turn on the ignition.
- Press the [ CAR ] func tion bu tton.
- Select
Systems in the CAR menu.
- Select
Tire pressure monitoring.
Fig. 260 MMI display :
Displaying the tire
pressure
- Select Display tire pressures . The tire pressures and
temperatures are displayed => fig. 260.
Current ti re pressures are shown in green and yellow numbers. The
meaning of the colors is as follows:
• Green:
If current tire pressure and the specified pressure are
approximately the same, the tire pressure is shown in green .
• Yellow: If current tire pressure is too low with respect to specified
pressure, the tire pressure is shown in yellow.
[I] Tips
• During the learning period, tire pressure and tire temperature are
not displayed. Horizontal lines--,-- are displayed for pressure and
temperature .
• Th e tire pressure is shown on the label located eithe r on the
dr iver's side B·pillar (visible when the door is open) or inside the fuel
fi ller flap.
~
Vehicle care Do-it-yourselt service iTechnical data

Tires and wheels Ill _______________ _____.
• Afte r the t ires have been rotated on the vehicle (includi ng use o f
the sp a re t i re*),
• If tires with new wheel sensors are used .
All pressure wa rning and system malfunction indicators in the display
will be canceled .
I f a wheel change has been made , it is necessary to complete the
Initializ e wheel s function .
The tire pressure monitor ing system is not available during the
prog ramming process and no p ressure and temperat ure val ues are
displayed on the MM I display .
After you have selected the function, th e new whe els are
programmed and the act ua l pressures are stored . Th is learn ing phase
can take up to 20 minutes d riving time .•
A pp lies to vehicles : w ith Tir e pressu re mon itor ing system
Malfunctions
A malfunction can have various causes.
Fig. 26 1 D ispl ay :
S ys tem malf uncti on
If the warning ligh t in the inst rument cl uste r flashes fo r approxi -
mately one minu te and then remain continuously illuminated and
additionally the => fig . 261 symbol appears in the d is p lay , the
tire pressure monito ring system is not available . This can have various
causes.
Vehicle OP-eration
• If the message appears at the end of the learning process, the
system c annot recognize the whee ls ins talled o n the veh icle . T his can
be because one or more wheels without a wheel sensor were
installed .
• A wheel sensor or other component may have failed .
• T he sy stem has detected more than S whee ls wi th whee l sensors
i n the ve hicle, for example when carry ing snow tires.
• A tire was changed but the
Init ialize wheel s function was not acti­
vated =>
page 330.
• Audi rep lacemen t pa rts were no t used .
• If snow chai ns are be ing used, system function can be compro ­
mised due to the shielding properties of the chains .
• Th e tire press ure monitor in g sys tem may not be ava ilable because
of a radio malfunction.
• Transmitters wi th the same freq uen cy, s uch as radio headphones
in the vehicle or radio equipment, can cause a temporary disrupt io n
of the sys tem throug h ex cessive elect romag net ic fie lds.
• Eliminate the interference if possible/if you can and then re-start
t he
Initialize wheels f unc tion. If the wa rning light comes on again,
you should contact your authori zed Audi dealer immediately to have
the problem corrected .
• Do not use commercially ava ilab le tire sealants . Otherw ise, the
elect rical components of the tire pressure mon itor ing system w ill no
longer work proper ly and the sensor for the t ire pressure monitoring
system will have to be replaced by a qualified workshop. •
Vehicle care Do-it-yourselt service iTechnical data

What do I do now? -_______________ __.EWII
(]] Tips
If you no longer have your or iginal warn ing triangle and need to equip
your vehicle with a new one, contact your authorized Aud i dealer for
a rep lacement. •
Jack, tools and spare wheel
Jack
The jack is stored underneath the floor panel in the
luggage compartment.
Fig. 26 5 Luggag e
c ompart ment vehicl e
jack
Be fore stori ng the jack, ma ke sure it is wound back down as far as it
w ill go .
& WARNING
Improper use of the vehicle jack can cause serious personal inju­
ries.
• Never use the jack suppl ied with your Audi on another vehicle ,
particularly on a heavier one . The jack is only suitable for use on
the vehicle it came with .
Vehicle OP-eration
& WARNI NG (continued )
• Using a bumper jack to raise the veh icle will dam age the
bumper system . The ja ck 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 sta rt or run the engine while the vehicle is suppo rted by
the jack.
• If you must work under the vehicle , always use safety stands
specifically designed for this purpo se.
• Never use the he xagonal so cket in the handle of the screw­
driver to loosen or tight en the wheel bolts .
• Always make sure the sp are tire and even a flat tire are secured
in pla ce and not loose, otherwis e they could fly forward, causing
personal injury to passengers in the vehicle in an accident or
sudden maneuver .
(]] Tips
Before you c an raise your vehi cle us ing t he jack, you mus t activate the
jack ing mode~
page 179 . •
Vehicle care Do-it-yourself service iTechnical data

What do I do now? -____________________ .:..::......:..:...___Wi'.'11
- Disengage and lower the floor panel before you close the
luggage compartment lid again.
Storing the replaced wheel
-Place the replaced wheel inside the spare wheel well in the
luggage compartment.
Tighten the knurled retaining screw clockwise to secure
the wheel in place.
- Disengage and lower the floor panel before you close the luggage compartment lid again.
& WARNING
Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident.
• Never store the spare wheel or jack and tools in the passenger
compartment.
• Always store all jacking equipment, tools, and the spare wheel
in the luggage compartment.
• Tighten the knurled retaining screw for the spare wheel
securely.
[I] Tips
Check the inflation pressure of the spare tire periodically to keep the
tire ready for use .•
Safety first
Changing a wheel
Before changing a wheel
Observe the following precautions for your own and your
passenger's safety when changing a wheel.
- After you experience a tire failure, pull the car well away
from moving traffic and try to reach
level ground before
you stop ~& .
- All passengers should
leave the car and move to a safe
location (for instance, behind the guardrail)~& .
- Engage the
parking brake to prevent your vehicle from
rolling unintentionally~ &.
- Move
selector lever to position P ~ & .
- If you are towing a trailer: unhitch the trailer from your
vehicle.
- Take the
jack and the spare tire out of the luggage
compartment~
page 333 .
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn
off the engine, turn the emergency flashers on and use other
warning devices to alert other motorists.
• Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed. When
one front wheel is lifted off the ground, placing the Automatic ..,
Vehicle care Do-it-yourself service Technical data

_____________________________________________ W __ h_a _ t_ d_o_ I_ d _ o_ n_o_ w_ ? _ ___.11111
• Drive at reduced speed until you have the tightening torques
checked. •
Applies to vehicles : with decorative wheel covers
Decorative wheel covers
The decorative wheel covers must be removed first to
access the wheel bolts.
R em ov ing
Fig. 269 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
d ecora tive whe el cov er ~ fig . 269 . •
Vehicle OP-eration
Applies to vehicles : with wheel bolts with caps
Wheels with wheel bolt caps
The caps must be removed first from the wheel bolts
before the bolts can be unscrewed.
Removing
F ig. 2 70 Ch angi ng a
wheel: removing the
wheel bolt c aps
- Push the plastic clip provided with the veh icle tool kit over
the wheel bolt cap until it engages .
- Pull on the
plastic cli p to remove the cap~ fig . 270.
Refitting
- Place the caps over the wheel bolts and push them back
on.
The caps are to protect and keep the wheel bolts clean.•
Vehicle care Do-it-yourself service iTechnical data

_____________________________________________ W __ h_a _ t_ d_o_ I_ d _ o_ n_o_ w_ ? _ ___._
Fig. 273 Close-up:
proper positioning of
jack
-Activate the vehicle jacking mode => page 179.
- Engage the parking brake to prevent your vehicle from
rolling unintentionally.
- Move the
selector lever to position P .
- Position the jack below the door sill under the mounting
point
that is closest to the wheel to be changed
~ page 338, fig. 272.
- Extend the
jack under the lifting point on the door sill until
its arm is positioned directly under the lifting point~ &.
- Align the jack so that its arm@=> fig. 273 engages in the
designated lifting point in the door sill and the movable
base ® lies flat on the ground. The base @ must be
vertical under the lifting point@.
- Wind the jack up further until the flat tire comes off the
ground =>& .
The jack must be installed only at the places indicated=::> page 338,
fig. 272. There is exactly
one location fo r each wheel. The jack must
not be positioned at any other location=::>& .
An unstable surface under the jack can cause the vehicle to slip off the
jack . Always provide a firm base for the jack on the ground . If neces-
Vehicle OP-eration
sary place a sturdy board or simila r support under the jack. On hard ,
slippery surfaces (such as tiles) use a rubber mat or similar to prevent
the jack from slipping=> &-
& WARNING
• You or your passengers could be injured while changing a
wheel if you do not follow these safety precautions:
-Positioning the jack under the vehicle at any other place than
those indicated above may damage the vehicle or may result in personal injuries.
- A soft or unstable surface under the jack may cause the
vehicle to slip off the jack. Always provide a firm base for the
jack on the ground. If necessary, use a sturdy board under the
jack.
- On hard, slippery surface (such as tiles) use a rubber mat or
similar to prevent the jack from slipping.
• To help prevent injury to yourself and your passengers:
-Do not raise the vehicle until you are sure the jack is securely
engaged.
- Passengers must not remain in the vehicle when it is jacked
up.
- Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
- Make sure jack position is correct, adjust as necessary and
then continue to raise the jack. •
Vehicle care Do-it-yourself service iTechnical data