2011 AUDI S8 oil pressure

238 Tir es and whee ls
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle. Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara ­
tive ly small patch of rubber on each tire that
assures that a ll-important contact between
you, your vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry more weight than they can safe ly han­
d le, avoiding damage from road hazards and
reg ularly inspecting t ires for damage includ­
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separat ion and blowouts.
A voidin g damage
If you have to drive over a curb or similar ob­
stacle, drive very s low ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chem icals includ ing grease, oil,
gasoline and b rake fluid off the tires.
Inspect the tires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedded in the treads.
St oring tire s
Mark tires when you remove them to indicate
the direction of rotation . Th is ensures you to
be ab le to mount them correctly when you re­
install t hem.
When removed, the wheels or t ires should be
stored in a cool, d ry and preferably dark place .
Store tires in a vertical position if they are not mounted on rims, in a horizontal pos it ion if
they are mounted on rims.
N ew tire s
New tires have to be broken in¢&,. .
The tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
pattern .
Hidden damag e
Damage to tires and r ims is often not readily
vis ible . If you notice unusual v ibrat ion or the
vehicle pulls to one s ide, th is may ind icate
t h at one of the t ires has been damaged . T he
t ir es must be checked immed iate ly by an au­
thorized Aud i dea le r or q uali fied wor kshop.
Unidirection al t ire s
A un idirectional tire can be identified by ar­
rows on the sidewall, that po int in the direc­
t ion the t ire is designed to rotate. You must
fol low the specified direction of rotation . This
is necessary so that these tires can develop
their optimum characteristics regarding grip,
road noise, wear and hydrop laning resistance.
For more information ¢
page 267.
A WARNING
-New tires or tires that are old, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
be broken in . To reduce the risk of losing
control, a co llision and ser ious personal
in ju ries, d rive w ith special ca re for the
fi rst 350 m iles (560 km).
- Driving with worn or damaged tires can
lead to loss of control, sudden tire fail­
ure, including a blowou t and sudden de­
flation, c rashes and serious personal in­
juries . Have worn or damaged tires re­
p laced immediate ly .
- Tires age even if they are not being used
and can fai l sudden ly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith specia l care and at low
speed.

246 Tires and wheels
valve stem caps on all wheels are secure ly
mounted on the valve .
@ For the sake of the environment
Underinflated tires will also increase the
fue l consumption.
Tires and vehicle load limits
There are limits to the amount of load or
weight that any vehicle and any tire can carry.
A vehicle that is overloaded will not handle
well and is more difficult to stop. Overloading
can not only lead to loss of vehicle control, but can also damage important parts of the
vehicle and can lead to sudden tire failure, in­
cluding a blowout and sudden deflation that
can cause the vehicle to crash.
Your safety and that of your passengers also
depends on making sure that load limits are
not exceeded. Vehicle load includes everybody
and everyth ing in and on the vehicle. These
l oad limits are techn ica lly referred to as the
vehicle's
Gross Vehicle Weight Rating
("GVWR").
The "GVWR" includes the we ight of the basic
vehicle, all factory installed accessories, a full
tank of fuel , oil, coo lant and other fluids plus
maximum load. The maximum load includes
the number of passengers that the vehicle is
intended to carry ("seating capacity") with an
assumed weight of 150 lbs (68 kg) for each
passenger at a des ignated seat ing pos ition
and the tota l we ight of any luggage in the ve­
hicle. If you tow a trailer, the weight of the
trailer hitch and the tongue weight of the
l oaded trailer must be included as part of the
vehicle load.
The
Gross Axle Weight Rating ("GAWR") is
the maximum load that can be applied at each
of the vehicle's two axles.
The G ross Vehicle Weight Rating and the
Gross Axle Weight Rating are listed on the
safety compliance sticker labe l located on the
driver's side B-p illar. You r A udi has 5 seat ing
positions, 2 in the front and 3 in the rear for
total seating capacity of 5. Vehicles with pow- er individual rear seats* have
4 seating posi ­
tions,
2 in the front and 2 in the rear for total
seat ing capac ity of
4. Each seating position
has a safety belt¢
page 137, Safety belts.
The fact that there is an upper limit to your
vehicle's Gross Vehicle Weight Rating means
that the total weight of whatever is being car­
ried in the vehicle (including the weight of a
trailer hitch and the tongue weight of the
loaded trailer) is lim ited . The more passen­
gers in the vehicle or passengers who are
heavier than the standard we ights assumed
mean that less we ight can be carried as lug­
gage.
The tire pressure label on your Audi also lists
the max imum combined weight of a ll of the
occupants and luggage or other cargo that
the vehicle can carry. For the location of the
label¢
page 242, fig. 184.
A WARNING ,___
Overloading a vehicle can cause loss of ve­
h icl e contro l, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more weight than your vehicle
was designed to carry will prevent the
vehicle from handling properly and in­
crease the risk of the loss of vehicle con­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
veh icle with in a safe distance.
- Tires on a vehicle that has been overload­
ed can fail suddenly, including a blowout
and sudden deflation, causing loss of
control and a crash.
- Always make sure that the total load be­
ing transported -including the weight of
a trailer hitch and the tongue we ight of a
loaded trailer -does not make the vehi­
cle heavier than the vehicle's G ross Vehi­
cle Weight Rating.

chains because t he vehicle will be ex­
tremely low. If you do drive with snow
chains on while the vehicle is at this lev­
el, the snow chains might severe ly 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 ve­
hicles with All Wheel Drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory installed r ims. If different rims are fit­
ted, the correct wheel bolts with the right length and correctly shaped bolt heads must
be used . This ensures that wheels are fitted
secure ly and that the brake system f unctions
correctly .
In certain circumstances, you may not use
wheel bolts from a d iffe rent vehicle -even if it
i s the same mode l
¢page 285.
A WARNING
Imprope rly tig hte ned or maintained whee l
bolts can be come loose causing loss of
contro l, a co llision and serious persona l in­
jury .
- Alw ays keep the w heel bolts and the
th reads in the wheel hubs clea n so the
wheel bolts can turn easily and be prop­
er ly tightened .
- Never grease or oil the wheel bo lts and
the threads in the w heel h ubs. They can
become loose wh ile driving if greased or
o iled, even if tightened to the specif ied
torque.
- Only use wheel bolts that belong to the
rim being installed.
- Never use different whee ls bolts on your
vehicle.
- Always maintai n the co rrect tightening
torq ue for the wheel bo lts to reduce the
Tire s an d wheel s 255
risk of a wheel loss. If the tightening tor­
que of t he wheel bolts is too low, they
can loosen and come out when the vehi­
cle is mov ing. If the tighte ning torque is
too h igh, the wheel bol ts and threads
can be damaged and the whee l can be­
come loose.
(I) Note
The specified torque for the whee l bolts is
90 ft lb ( 120 Nm) wi th a tole rance of± 7,4
ft lb(± 10 Nm). Torq ue whee l bolts diago­
nally. Afte r cha nging a whee l, the torq ue
must be checked as soon as possible wi th a
torque w rench -prefe rably by an au thor­
ized Audi dealer or qualif ied workshop .
Low aspect ratio tires
Your Audi is facto ry-eq uipped with low aspect
ratio tires. These tires have been thoro ughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and handling u nder a variety of driving cond i­
tions . Ask your authorized Audi dealer for
more details.
The low aspect ratio of these t ires is ind icated
by a numeral of
55 or less in the tire's size
designation . The numeral rep resents the ratio
of the t ire's sidewall height in relation to its
t read width ex pressed in pe rce ntage. Conven ­
tiona l tires have a he igh t/w idth ratio of 60 or
more.
The performance of low-aspe ct-ratio tire s is
particularly sensitiv e to improper infla tion
pres sure. It is therefore important that low
a spect ratio tires are inflated to the specified
pre ssure and that the inflation pressure i s
regularly checked and maintained. Tire pre s·
sures should be checked at least once a
month and always befo re a long trip
¢ page 244, Checking tire pressure.
What you can d o to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact w it h potholes , curbs, gul lies ..,.
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288 Index
Average consumption ........ ... .... .. 24
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damaging the vehicle .. .. .. .. .. . 198
B
Battery 233
Charging ................... ..... . 235
Important warnings ...... .. .. .. .. . 233
Location . ................. .. .... . 233
low . .. .... .......... ...... ... .. . 195
Replacing the battery ...... ..... .. . 236
State of charge ............... .. ... 195
W inter operation ....... .. .. .. .. .. . 233
Working on the battery .... .. .. .... . 233
Before driving .. ... .... .... .. .. .. .. . 127
Blended gasoline .................. . 218
Blower (automatic climate control) . . . . . . 76
Body cavity sealing ......... .. .. .... . 211
Booster seats
Brake fluid 177
Changing the brake fluid ....... .. .. . 232
Check ing the brake fluid level . .. .. .. . 232
What is the cor rect brake flu id level? . . 232
What should I do if the brake fluid warn-
ing light comes on?
........ .... ... . 232
Brake system Anti-lock braking system . . . . . . . . . . . . . 19
Brake assist system ....... .. .. .... . 190
Brake booster ............ .. .. .. .. . 193
Brake fluid ............... ... .... . 232
Brake fluid specifications for refill and re-
placement ............... ... .... . 232
Brake light defective ...... .. .. .. .. .. 21
Brake pads ... ........... .. .. .... . 197
Electromechanical park ing brake .. .. . . 81
Fluid reservoir ............... .. ... 232
H ow does moisture or road salt affect the
brakes? .. ............... .. .. .... . 192
Warn ing/ indicator lights ... .. .. .... . . 14
Worn brake pads symbol ... .. .. .. .. . . 19
braking guard Messages
Sett ings
. .. ... .......... .. .. .. .. ..
86
93
93
Break-in period . ........... .. .. .... . 197
Brake pads . ... ....... ... .. .. .. .. . 197
Tires 197
Bulbs ..... .. ................ ..... . 272
C
California Proposition 65 Warning ... .. 223
Battery specific . ................. . 235
Capacities .. .. .. .. .... ...... ... .. . .
Engine oil ... .. . .. ............ .. . .
Car care .... .... .................. . 282
224
206
Exterior ....... .. .......... ...... . 206
Interior ..... .. .. ....... ...... .. .. 212
Car carrier Transporting your vehicle ....... .. .. 277
Catalytic converter .............. ... . 198
Center armrest Cockpit ....... .. ..... ........... .. 57
Rear . .. .. .. .. .. ............. .. .. . 63
Central locking . . . . . . . . . . . . . . . . . . . . . . 31
Emergency locking ............. .... . 35
Certification . . . . . . . . . . . . . . . . . . . . . . . 286
Changing a wheel .. ................ . 262
Changing engine oil ............. .... 228
Chassis (undercoat ing) ........... .. . .
Check ing
Engine coolant level ...... ...... .. . -
Tire pressure . .. .. ............. .. . .
Child restraints Danger of using child restraints in the
front seat ..... .. .......... ...... .
Where can I get additional information
about child restraints and their use? ..
Child restraint system anchors .... .. . .
Child safety ... .. .. ................ .
Convertible locking retractor ........ .
Guidance fixtures for lower anchorages
I mportant safety instructions for using
child safety seats .............. ... .
Important things to know when driving
with children . ... ....... .... --. - . - 212
229
244
14
7
187
181
169
178
183
172
169
Tether anchors . .. .......... ...... . 185
Tether straps .. .. ... .. ..... ... .. .. 185
Child safety lock Rear doors (mechanical) ........ .... . 38
Rear doors (power) ...... ...... .. . - - 38
Child safety seats . . . . . . . . . . . . . . . . . . . 17 4
Booster seats . . . . . . . . . . . . . . . . . . . . . 177
Convertible child seats ......... .... 175
Convertible locking retractor ..... .... 178

Pressure malfunction ................ 16
Recomm end ed oil check int ervals .. .. . 227
Senso r defective . . . . . . . . . . . . . . . . . . . . 20
Spe cificat ion and visco sity .. .. .. .. .. . 224
En gin e speed limitat ion ..... .. .. .. .. .. 20
Eng ine start system (indicator lights) .... 17
Entry assistance . . . . . . . . . . . . . . . . . . . . . 60
Environm ent
Break-in period ......... .. .... .. .. . 197
Cata lytic converter .......... .. .... . 198
Disposing of your vehicle battery .... . 236
Driving at high speeds ........... .. . 200
Driving to minimize pollution and noise 199
Fuel ... .. .. .. .. ........... .. .. .. . 220
Fuel economy ............ .... .. .. . 199
Leaks under your veh icle ...... .. .... 222
Lettin g the vehicle stand and warm up. 200
Proper disposal of drained brake fluid . 232
Proper disposal of drained engine cool-
ant ... .. .. .... ............. .. .. . 230
Proper disposal of drained engine
oil . . . . . . . . . . . . . . . . . . . . . . . . . 227, 228
Recycling used engine oil ... .. .. .. .. . 227
Unleaded fuel ............ .... .. ... 218
What should I do with an old battery? . 236
ESP (Electronic stabilization program)
Warning/indicator lights ... .. .. .. .. .. 18
Event Data Recorder (EDR) ...... .. .... 190
Exhaust tail pip es .......... .... .. .. . 212
Expa nsion tank ............ .. .. .. .. . 229
Exterior lighting .............. ... ... . 43
Exterior mirrors
Ad justing .. .. ........... .. .. .. .... 51
Dimming . .. ............. .... .. .... 51
H eating .. .. ............. .... .. .... 51
Exterior temperature display ... .. .. .. .. 23
F
Fast ening
Booster seats .. .......... .. .. .. .. . 17 7
Convertible child safety seats ..... .. . 175
Infant seats . ............ .. .. .. ... 174
Floor mats . .. ............. .... .. .. . 133
Foot pedals .. .... ......... .... .. .. . 132
Index 291
For the sake of the environment
Gasoline fumes and the environment .. 220
Reducing engine noise by early upshift-
ing ......... .. .. .................. 10
Refueling ... .. .. .... ............. 220
Saving fuel by early upsh ifting ...... .. 10
Four zone automatic climate control .. ... 75
Front airbags Description . . . . . . . . . . . . . . . . . . . . . . . 149
How they work ... .. . .......... .... 1S4
Frontal coll is ion s and the laws of physics 138
Front passenger seat adjustment . . . . . . . 60
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . S4
Adjus ting ... .. .. .. .. ........... .. 129
Child restraints in the front seat ...... 147
Fuel Additives ........ .. ............... 218
Blended gasoline .................. 218
Current consumpti on ........... .. .. . 24
Economy messages (efficiency program) 25
Fuel filler flap emergency release ... .. 221
Fuel filler neck ...... .... ...... .. .. 219
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Gasoline .. .. .. .. .. .. ........... .. 218
Gasoline addit ives ................. 219
Low fuel level symbol . . . . . . . . . . . . . . . 20
Octane rating .. .. .. . .. .. ...... .. .. 218
Recommendation ................. . 218
Refuelling ... .. .. .... ............. 220
Reserve ..... .. .. ................. . 11
Ta nk capacity . . . . . . . . . . . . . . . . . 11, 282
Fuses Ass ignment ...... ............... . 268
Replacing ... .. .. ... ............ .. 268
G
Garage door opener (Homelink ®) .. ... . 124
Garment hooks .. .. ................. . 71
Gas discharge lamps .... ............. 272
Gauges Engine coolant temperature . . . . . . . . . . 10
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . 11
Speedometer . . . . . . . . . . . . . . . . . . . . . . 26
Tachom eter ... .. ................. . 11
T rip odometer . .. .... ........... .. . 26
General illustration . . . . . . . . . . . . . . . . . . . 8
Generator (warning/indicator lights) ... . 16
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