2010 AUDI S8 wheel size

Tires and wheels -________________ f!ffl
Safety Standa rd No. 109 . G rades Ba nd A rep resent higher levels of
p erf or ma nce on t he laborato ry tes t w hee l than t he mini mum
r e q uir ed by law .
& WARNING
The traction grade assigned to this tire is based on straight-ahead
braking traction tests, and does not include acceleration,
cornering, hydroplaning or peak traction characteristics.
& WARNING
The temperature grade for this tire is established for a tire that is
properly inflated and not overloaded. Excessive speed, underinfla ­
tion, or excessive loading, either separately or in combination, can
cause heat buildup and possible tire failure. •
Winter tires
Winter tir es co n imp rove ve hi cle ha ndlin g on sno w an d
ice. At temp eratur es be low 45 °F (7 °C) w e rec ommen d
ch angin g to wi nte r tires .
In some heavy snow areas, loca l gover nme nts may requ ire t rue
w inter o r "snow" tires, those with very deep ly cut trea d. These tires
sho uld only be used in pairs and be installed on all four wheels . Make
s ur e you pu rc h ase snow ti res t hat a re the same size and const ruction
type as the ot he r tir es o n your veh icle .
If your ve hicle is equ ipped w ith all-whee l drive* , this will improve
tra ction durin g w inte r dr iving, even wi th th e sta ndard ti re s . Ho wever,
we st rongly recomme nd that you a lways equip all four w heels on your
vehicle wi th co rrec tly fitte d win ter tires o r all- season tires, when
w inter road conditions are expected . T hi s also improves the veh icle 's
bra king perfo rma nce and re duces stop ping distances .
S um mer tir es p rovide less gr ip on ice and s now .
Safety first
Wi nter tires (snow tires) m ust always be fitted on all fo ur whee ls .
Compat ible tire press ure monitor ing sensors * must be installe d on
all four w in te r tir es fo r the tire pr essure mo nitoring sys te m * to func­
tion pro per ly ~
page 320.
Ask your a uthor iz e d Audi dealer or qualified wor ksho p fo r per mitt ed
winter tire sizes . Use only rad ia l w inte r tires .
W inter tires lose their effectiveness w he n the trea d is wor n down to
a dep th of0 .1 57 inch (4 mm) .
Only drive w ith w inte r tires under w inte r con ditions. S ummer ti res
h and le be tter w he n t here is n o sno w or ic e on t he ro ads and the
temperature is above 45
°F (7 °().
If you have a flat tire, see notes on s pa re w hee l~ page 318 .
Please always re m em ber tha t win ter tires may have a lower speed
rating t han the t ires originally insta lled on yo ur veh icle at t he t ime it
w as manuf act ur ed . P lease see ~
page 320, "Spee d ratin g (le tter
code)" for a listing of the speed rating lette r codes and the maxim um
s peed a t whi ch the tires can b e driven.
T he spe ed rat ing letter code(~
page 309) is on the s ide wall of the
ti re ~
page 318.
& WARNING
Winter tires have maximum speed limit s that may be lower than
your veh icle'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 _,,
Vehicle care Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
& WARNING (conti nued)
personal injuries. Have worn or dam aged tires replaced immedi­
ately .
• Winter tires have ma ximum speed rat ing that may be lower
than your vehicle' s maximum speed .
• Never drive faster than the speed for which the winter or other
tires installed 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
drive 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 road s,
even winter tires cannot help under black ice conditions.
<£> For the sake of the environment
Use s ummer tires when weather condit ions permit. They a re quieter,
do not we ar as qu ickly and redu ce fuel consum ptio n. •
Snow chains
Snow chains may be fitte d only to the fro nt w heels, and only to
certain tire sizes. Ask your authorized Audi dealer on which tire sizes
snow chains can be used.
If you a re goi ng to use snow c ha ins, then you must insta ll them on the
front wheels at least.
T he snow c hain s m ust have low -profile links and m ust not be thicker
than 0.53 inc h (13 .5 mm), including the lock. Remove wheel center covers a
nd trim d iscs before putting snow
c hains on you r veh icle =>
(D. For sa fe ty reaso ns cove r caps m ust the n
be fitted over the wheel bolts. These are available from a uth orized
Audi dealers.
& WARNING
Using the wrong snow chain s for your vehicle or installing them
incorrectly can increase the risk of loss of control leading to
serious personal injury.
• Snow chains are available in different sizes. Always make sure
to follow the instru ction s provided by the snow chain manufac ­
tur er.
• When driving with snow chains never drive fa ster than the
speed permitted for your specific snow chains .
• Always observe local regulations.
0 Note
• Remove snow chains before drivi ng on ro ads not covere d wit h
snow to avoid damag ing t ires and wear ing the snow chains down
unnecess aril y.
• Snow chains, which come into direct contact with the wheel rim,
c an scratch o r damage i t. T herefo re, make sure tha t t he s now chains
are suitably covered . Check the pos ition of the snow cha ins afte r
dr iv ing a few yar ds and correct if ne ccess ary. Fo llow the ins truct ion s
from t he snow chai n manufacturer when doing so.
• If the Ad aptive Air Suspe nsio n sho uld ma lf u nct ion, do n ot moun t
or use snow cha ins because the ve hicle wi ll be extremely low. If you
do drive w it h sn ow ch ain s on while the ve hicle i s at t his level , the
snow cha ins m ight severe ly damage the whee lhouse and other pa rts
of the vehi cle.
~

Tires and wheels -_______________________________ f!:f'II
[I) Tips
Where snow cha ins a re mandatory on certain roads, this no rmally
also applies to vehicles with All W heel Dr ive .•
Wheel bolts
Wheel b olts must al ways be tig hten ed to the correct
torque.
Th e design of whee l bo lts is matc hed to the facto ry installed rims. If
different r ims are fitted, the correct wheel bolts wi th t he r igh t lengt h
and correctly s haped bolt heads must be used . Thi s ensures that
w heels are fi tted secure ly and tha t the br ake system f unc tion s
correctly.
I n cert ain circumst ances, yo u may not us e wheel bolts from a
different veh icle -even if it is the same model=>
page 363.
& WARNING
Improperly tightened or maintained wheel bolts can become
loose causing lo ss of control, a collision and serious per sonal
injury .
• Always keep the wheel bolts and the thread s in the wheel hub s
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 d riving 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 loo sen and come out when the
vehicle is moving. If the tightening torque is too high, th e wheel
Safety first
& WARNING (co ntinued )
bolts and threads can be damaged and the wheel can become
loose .
0 Note
The speci fied tor que f or th e wheel bolts is 90 ft lb (1 2 0 Nm) wi th a
tolerance of ± 7,4 ft lb( ± 10 Nm). Torque wheel bolts diagonally.
After ch anging a wheel, the to rque mu st be checked a s so on as
poss ible with a torque w rench -prefe rab ly by an authorized Aud i
dealer or qualified workshop. •
Low aspect ratio tires
Your Audi is fa cto ry -equ ip ped wi th low aspec t ratio tires. These tire s
have been thorough ly tested and been selected specifically for your
mode l for the ir supe rb perfo rmance, roa d fee l an d han dling un der a
var iety of driv ing cond it ions. Ask your author ized Audi dea ler for
more deta ils.
Th e low a spect rat io of these tires is indica ted by a nu meral of
55 or
less
in the tire's size designation. The numeral represents the ratio of
t he t ire's s idewall heigh t in relat io n t o its t re ad wi dth expressed in
percentage. Conventiona l tires have a height/width ratio of 60 or
more .
The performance of low -aspect -ratio tires is particularly sen sitive 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 mainta ined. Tire pres­
s ure s should be checked at lea st once a month and always before a
long trip =>
page 313, "Checking tire pressure".
What you can do to avoid tire and rim damage
Low aspect ratio ti res can be damaged more easi ly by impact w ith
potholes, curbs, gull ies or ridges on the road, p articular ly if the tire is
underinflated. .,_
Vehicle care Technical data