2008 AUDI S8 winter tires

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•
& WARNING
The tr action grade assigned to this tire i s ba sed on straight -ahead
braking traction tests, and does not include acceleration,
c ornering , hydroplaning or peak tra ction chara cteristic s.
& WARNING
The temperature grade for this tire is established for a tire that is
properly inflated and not overloaded. Excessive speed , underinfla ­
tion , or ex cessive loading , either separately or in combination , can
c ause heat buildup and po ssible tire failure . •
Winter tires
Winter tires c an im prove vehicle handlin g on snow and
i ce. At tem pera tures belo w 4 5 °F (7 °C ) we re commend
changi ng to w inte r tires.
In some heavy snow areas, loca l governments may require true
winter or "s now" tire s, those with very deeply cut tread. These tires
s h ou ld on ly be used in pairs and be i nstalled on all four wheels .
M ake sure you purchase snow tires that a re the same size and
co nstruct io n type as t he othe r tires on your ve hicle.
I f your vehicle is equipped with all -wheel drive *, this will improve
t raction d uring winte r dr iving , eve n wit h th e sta n dar d tir es .
However, we strongly recommend that you always equip a ll four
w hee ls on you r vehic le wi th co rrectl y fi tted w inte r tires or all-season
t ir es, w hen w inter road condi tions are expec ted . T his also improves
the vehicle 's br aking perfo rma nce a nd reduces stopping distances .
Summe r tires p rov ide less gr ip on ice a nd s now.
Wint er tires (snow tires) must a lways be fitted on all four whee ls .
Compatible ti re p ressu re m oni to ring sen so rs must be instal led on
a ll four w inte r tires for t he ti re pr essur e moni tor ing s yste m to fu nc­
tion
proper ly => page 33 8.
Ask your authorized Audi dealer or qualifi ed workshop for permitted
winter tire sizes. Use only ra di al winter tires .
W inter tires lose their eff ectiveness when the tr ead is worn down to
a depth of 0 .157 inc h (4 mm).
O nly d rive wi th winte r ti res under w inter cond itio ns. S um mer tire s
handle better when there is no snow or ice on the roads and the
te mpera ture i s abov e 45 °F ( 7 °C) .
I f you have a f lat tire, se e notes on spar e whee l
=> page 336.
Please a lways remember that winter tires may have a lower speed
r ati ng t han th e tires orig in ally ins talled o n you r ve hicle at t he time
it was manufactu red . P lease
see => page 338, "Speed rating (letter
co de)" for a l is tin g of th e sp eed ratin g letter code s an d th e
maximum speed at which the tires can b e driven .
The speed ra ti ng le tter
co de( => page 327) is on the side wa ll of the
t ire
=> page 336.
& WARNING
Winter tires have ma ximum speed limits that may be lower than
your vehicle's maximum speed . Always know the maximum speed
before driving off . Never drive faster than the speed permitted for
your specific winter tires. This will cause damage to the tires leading to an accident and serious personal injury to you and your
passengers .
& WARNING
Driving faster than the maximum speed for which the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation, loss of control , crashes and serious
per sonal injuries . Have worn or damaged tires replaced immedi­
ately.
• Winter tires have maximum speed rating that may be lower
than your vehicle's maximum speed.
Vehicle care

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&, WARNING (continued )
• Never drive faster than the speed for which the winter or other
tires in stalled on your vehicle are rated.
& WARNING
Always adjust your driving to the road and traffic condit ions .
Never let the good acceleration of the winter tires and all -wheel
dri ve tempt you into taking extra risks. Always remember :
• When braking , an all -wheel drive vehicle handles in the same
way as a front drive vehicle .
• Drive carefully and reduce your speed on icy and slippery roads ,
even winter tires cannot help under bla ck ice conditions.
c£> For the sake of the environment
Use summer tires when weather conditions permit. They are
q uiete r, d o not wear as qui ckly a nd r educe fuel cons ump tion.•
Snow chains
Sn ow c hain s may be fitte d only to the fron t w heel s, an d on ly to
certain tire sizes. Ask your authorized Audi dealer on which tire
s iz es snow c hains can be used.
If you are going to use snow cha ins, then you must instal l them on
the front wheels at least.
Th e sn ow c hains mus t h ave low-pro file l inks and mus t n ot be t hic ke r
than 0. 53 inch ( 13. 5 mm), including the lock.
Remove wheel ce nter c ove rs a nd tr im dis cs be fore putti ng sn ow
c h ains on your
veh ic le:::::, 0. For safety reasons cover caps must
then be fitted ove r the wheel bo lts . These are avai lable from autho ­
rized Audi dealers.
& WARNING
Using the wrong snow chains for your vehicle or installing them
incorrectly can in crease the risk of loss of control leading to
serious personal injury .
• Snow chains are available in different sizes. Alway s make sure
to follo w the instructions provided by the snow chain manufac ­
turer.
• When driving with snow cha ins never drive faster than the
speed permitted for your specific snow chains .
• Always observe local regulations .
0 Note
• Remove snow chains before driving on roads not covered with
snow to av oid da magi ng t ires a nd weari ng th e snow cha ins dow n
unnecessari ly .
• Snow c hains, w hich
come int o direct co ntact w it h the w heel r im,
can scratch or damage it. Th erefore, make sure that the snow chains
are suitab ly cov ere d.
• I f the Adaptive Air Suspension should malfunction, do not
mo unt or use snow cha ins because t he veh icle w ill be ext re me ly
l ow. If you do drive with snow chains on while the vehicle is at this
l ev el, the s now c hai ns mig ht sev erely da mag e th e wheel house an d
other parts of the vehicle .
[ i ] Tips
Where snow chains are mandatory on certain roads, this norma lly
a lso ap plies t o veh icle s wi th All Wheel D rive .•

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• After any impact, immediately inspect your tires or have them
inspected by the nearest authorized Audi dealer. Replace a
damaged tire as soon as possible .
• Inspect your tires every 2,000 miles (3,000 km) for damage and
wear . Damage is not always easy to see . Damage can lead to loss of
air and underinflation, which could eventua lly cause tire fai lure. If
you be lieve that a tire may have been damaged, replace the tire as
soon as possib le .
• These tires may wear more quickly than others .
• Please a lso remember that, whi le t hese tires deliver responsive
handling, they may ride less comfortably and make more noise than
other choices.
R ed uce d p erform an ce in win ter/co ld s eason
c ondi tion s
All tires are designed for certain purposes. The low aspect ratio,
u ltra hig h performance t ires orig inally instal led o n your vehic le are
intended for maximum dry and wet road performance and hand ling.
They are no t suitable for cold, snowy or icy weather condit ions . If
you drive under those circumstances, you should equip your vehicle
with al l- season or winter tires, which offer better traction under
those conditions . We suggest you use the recommended snow or
a ll-season tires specified for your vehicle, or their equiva lent.
Refer
to~ page 341 for more detai led informat ion regarding w inter
tires. •

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_ic _ a_l _in _ d_e _ x __ lll
T
Tachometer . .... .... .... ... .... .... . 13
Technical modifications ...... ...... .. 383
T emperature
Climate controls ...... .... ..... .. . 117
Setting for the driver's and front passen-
ger's side ... ...... .... ... .... .. 117
Tether strap ........................ 263
Securing the upper tether strap 264
The first 1,000 miles (1,500 km) and
afterwards .. .... .... ... .... .... 277
Tie -down eyelets ... .. .... ...... . 100, 207
Tips for the environment
Saving fuel ... .... .... ... .... .... 104
Using the air conditioner only when necessary ... .... ....... .... .... 123
ti ptron ic® . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Automatic Shift Lock (ASU ... .... .. 165
Driving .. .. .. .... .... ........... 163
Dynamic shift program . ...... ... .. 166
Fail -safe mode ... .... .... ...... .. 168
Kick -down ..... ...... .... ... .... . 166
Manual shift program ........ .... . 167
Se lector lever . .... .... ... .... .... 164
Tire pressure .. ... .. .... .... ...... .. 331
Tire pressure monitoring system ... .... 41
Displaying tire pressures . .... .... .. 43
Initialize wheels ... .... ... .... .... . 45
Learning process .................. 44
Loss of air pressure ............. 20, 42
Malfunctions .... .... .... .... .... . 45
Sensors ....... .. .... .... ...... .. 338
Controls and equip­ ment Safety first Stor
ing tire pressures ....... .... ... 44 Towing
Tires and wheels .. .... .... .... ... 338 Tow truck procedures .... .... .... . 366
Valves ..... .. .... .... .... .... ... 338
Towing hitch
Tire service life ........ .... ... .. .... 335
Audi parking system .............. 180
Tires ........ .... ... .... .... .... ... 324 Towing loop ..... .... .... ... .... .... 367
Replacing .. ...... .... ...... ... .. 338 front .... ... .. .... .... ...... ... .. 367
Service life . ........ .... ... .. .... 335 rear ............................ 368
speed rating letter code .. ... .. .... 338
Trailer towing . .... ... .... ...... ... .. 282
Tire manufacturing date ...... .... . 338
Operating instructions . ...... ... .. 283
Tire specifications ................ 337
Technical requirements ... .... 282, 283
Tread depth ........ ....... ...... 335
Trailer towing tips ................ 284
Uniform tire quality grading .... .... 340
Train
Winter tires ... .... .... .... .... ... 341
Transporting your vehicle .. .... .... 369
Tires and ve hicle load limits . ...... ... 333
Transmission
Tires and wheels
See Automatic transmission .. ...... 163
Checking tire pressure .... .... .... 331
Transport Canada . .... ... ........ ... 208
Cold tire inflation pressure .. .... ... 328
Dimensions ...................... 336 Transporting your vehicle
.... .... ... . 369
Tread Wear Indicator (TWI) ....... .... . 335
Genera l notes .................... 324
G lossary of tire and loading termino logy
325
New tires and whee ls .. .... .... ... 336
Replacing .... .... .... .... .... ... 337
Snow chains ........ .... ... .. .... 342 Trip computer
Fuel consumption .... .... .... .... . 38
Mi leage ... ........... .... .... .... 38
Sing le-trip memory .. ........ .... .. 39
Total-trip memory .. ...... ..... .. .. 39
Tire pressure monitoring system .... 338
Tires and vehicle load limits .. ...... 333
Wheel bolts .. ....... ...... .... ... 343 Trip
odometer ..... .. .... ....... ... .. 14
What does it mean when dEF appears in the trip odometer disp lay? ......... 14
Winter tires ......... ...... .... ... 341 Trunk
Tires/Wheels
See Rear lid ... .... .... ... .... .... . 55
Low aspect ratio tires . .... ........ 343 Trunk
escape handle .. .... ... .... .... 348
Tools ... .... .... ... .... .... .... .... 350 Turn signals
... .. .... .... .... ...... .. 73
Torn or frayed safety be lts .. .... .... .. 212 Warning/indicator
lights .. ........ .. 19
Touch-up paint . .... ... .... .... .... . 292
Vehicle operation Vehicle care Do-it-yourself service Technical data

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Rain sensor ........ .... .... .... ... 80
Service position . ....... .... .... ... 82
Washer reservoir ...... .. .... .... . 323
Winter driving Windows . .... .... .... ... .... .... 292
Winter operation Battery . ... .. .... .... .... .. . .. .. . 318
Cooling system ...... .... .... ... . 314
Steering wheel heating .. .... . .... . 1 19
Tires .. ......... .... .... ... .... . 273
W. t t
' in er ires . .. .. .... .... ... .... ... .
Al l-whee l drive . ...... .... ... .... .
Wiper blades 341
341
See Windshield wipers ............. 82
X
Xenon-Lights ...... .... .... ......... 362
y
Yellow symbols ... .... .... .... .... ... 34
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data