2010 AUDI S8 tire size

-~_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

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
In order to minimize the occurrence of impact damage to the tires of
your vehicle, we recommend that you observe the following precau­
tions:
• Always maintain recommended inflation pressures. Check your
tire pressure every 2,000 miles (3 ,000 km) and add air if necessary.
• Drive carefully on roads with potholes, deep gullies or ridges. The
impact from driving through or over such obstacles can damage your
tires. Impact with a curb may also cause damage to your tires.
• 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 eventually cause tire failure. If
you believe that a tire may have been damaged, replace the tire as
soon as possible.
• These tires may wear more quickly than others .
• Please also remember that, while these tires deliver responsive
handling, they may ride less comfortably and make more noise than
other choices.
Reduced performance in winter/cold season
conditions
All tires are designed for certain purposes. The low aspect ratio, ultra high performance tires originally installed on your vehicle are
intended for maximum dry and wet road performance and handling.
They are not suitable for cold, snowy or icy weather conditions. If you
drive under those circumstances, you should equip your vehicle with
all-season or winter tires, which offer better traction under those
conditions . We suggest you use the recommended snow or all-season
tires specified for your vehicle, or their equivalent.
Refer to~
page 323 for more detailed information regarding winter
tires. •
Tire pressure monitoring system
Applies to veh icles : wit h Tire p ress ure m onitor ing sy ste m
General notes .. '
Each tire, including the spare (if provided) , should be checked
monthly when cold and inflated to the inflation pressure recom­
mended by the vehicle manufacturer on the vehicle placard or tire
inflation pressure label. (If your vehicle has tires of a different size
than the size indicated on the vehicle placard or tire inflation pressure
label, you should determine the proper tire inflation pressure for
those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS) that illuminates a low tire pres ­
sure telltale when one or more of your tires is significantly under­
inflated . Accordingly, when the low tire pressure telltale illuminates,
you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to tire failure . Under­
inflation also reduces fuel efficiency and tire tread life, and may
affect the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire mainte­
nance, and it is the driver's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger
illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indi­
cator to indicate when the system is not operating properly. The
TPMS malfunction indicator is combined with the low tire pressure
telltale. When the system detects a malfunction, the telltale will
flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists .
When the malfunction indicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons, including the instal-..,_