2008 AUDI S6 tire size

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ llll
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Quality grades can be found where applicable on the tire side wall
between tread shoulder and maximum section width =>
page 325,
fig. 244.
For example: Tread wear 200, Traction AA, Temperature A.
All passenger car tires must conform to Federal Safety Require­
ments in addition to these grades .
Tread wear
The tread wear grade is a comparative rating based on the wear rate
of the tire when tested under controlled conditions on a specified
government test course.
For example, a tire graded 150 would wear one and one half (1 1/2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual condi ­
tions of the ir use, however, and may depart significantly from the
norm due to variations in driving habits, service practices and differ ­
ences in road characteristics and c limate .
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 controlled conditions on specified government
test surfaces of asphalt and concrete. A tire marked C may have
poor traction 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.
Sustained high temperature can cause the material 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 Safety
Standard No. 109. Grades Band A represent higher leve ls of
performance on the laboratory test wheel than the minimum
required 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 excess ive loading, either separately or in combination, can
cause heat buildup and possible tire failure . •
Winter tires
Winter tires can improve vehicle handling on snow and
ice. At temperatures below 45 °F (7 °C) we recommend
changing to winter tires.
In some heavy snow areas, local governments may require true
winter or "snow" tires, those with very deeply cut tread. These tires
should only be used in pairs and be installed on all four wheels .
Make sure you purchase snow tires that are the same size and
construction type as the other tires on your vehicle.
If your vehicle is equipped with al l-wheel drive *, this will improve
traction during winter dr iving, even with the standard tires.
However, we strongly recommend that you always equip all four
wheels on your vehicle with correctly fi tted winter tires or all-season
tires, when winter road conditions are expected . T his also improves
the vehicle 's braking performance and reduces stopping distances.
Summer tires provide less grip on ice and snow.
Vehicle care I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Winter tires (snow tires) must always be fitted on a ll four wheels .
Compati ble t ire press ure moni to ring senso rs m ust be installed o n
a ll four w inter t ires for the t ire pr essure mo nitoring system to func­
tion p roper ly
~ page 327.
Ask you r au thori zed Aud i dealer o r qual ified w ork s hop f or per mitted
winter tire s izes . Use only radial winter tires.
Win ter tires lose their effec tivenes s whe n the trea d is wo rn down to
a depth of 0.1 57 inch (4 mm).
Only drive with winter tires unde r winter conditions. Summer t ires
ha ndle better when there is no snow or ice o n th e roads a nd th e
temperature is above 45 °F ( 7 °C).
If you ha ve a flat tir e, see notes on s pare w heel
~ page 325.
Please a lways reme mber t hat winte r ti res may have a lower speed
rating than the tires originally instal led on your vehic le at t he time
i t was ma nufactured. Please see~
page 326, "Speed rating (letter
code)" for a listing of the speed rating letter codes and the
m aximu m sp ee d at whic h th e t ires ca n be d riven .
T he speed rating letter code(~
page 316) is on the side wa ll of the
t ir e ~
page 325.
& WARNING
Winter tires have maximum speed limit s that may be lower than
your vehicle' s ma ximum speed. Always know the ma ximum 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 ma ximum speed for whi ch the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation , loss of control , crashes and serio us
& WARNING (continued)
personal injuries . Have worn or damaged tires repla ced immedi­
ately.
• Winter tires have maximum speed rating 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 traff ic conditions .
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 roads,
even winter tires cannot help under black ice conditions .
Use summer tires when weather conditions permit. They are
q uieter, d o not wear as qu ickly a nd red uce fuel c onsu mp tion .•
Snow chains
S no w chains may b e fitte d only to t he fron t w hee ls, an d only to
certain tire sizes. Ask your authorized Aud i dea ler on which tire
sizes sn ow chai ns ca n be use d.
I f you are going to use snow chains, then you must instal l the m on
the front wheels at least.
T he snow chains mus t have low-pro file l inks a nd mus t not be thicke r
than 0.53 inch (13.5 mm), including the lock. .,,_

Tires and wheels -________________ w-.
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Remove wheel center covers and trim discs before putting snow
chains on you r veh icle =>
(D. For sa fety reasons c ove r cap s m ust
then be fitted over the wheel bo lts . These are avai lable from autho ­
r ized Aud i deale rs.
& WARNING
Using the wrong snow chains for your vehicle or in stalling them
incorrectly can increase the risk of loss of control leading to
serious personal injury.
• Snow ch ains are available in different sizes . Always make sure
to follow the instructions provided by the snow chain manufac ­
turer .
• When driving with snow chains never drive faster than the
speed permitted for your specific snow chains .
• Always observe local regulations .
0 Note
• Remove sn ow chai ns b efore d rivin g on roads not cove red w ith
snow to avoid damaging tires and wearing the snow chains down
u n n ecessa r i ly.
• Snow chains , which come into d irect contact with t he whee l rim,
ca n scratc h or da mage it. T herefore, ma ke sur e tha t th e snow chains
are suitably covered.
• I f the Adaptive Air Suspensio n* shou ld malfunction, do no t
mount or use snow chains because the vehicle will be extremely
l o w. I f yo u do drive w ith snow c hai ns o n w hi le t he ve hicle is a t thi s
level, the snow cha ins might severe ly damage the wheelhouse and
ot her parts o f the vehicle.
[ i ] Tips
W her e sn ow c hai ns are manda tory on certa in roa ds, t his no rm ally
a lso app lies to vehic les with Al l Wheel Drive. •
Wheel bolts
Wheel bo lts must alw ays be t ig hte ned to the correct
to rq ue .
The design of wheel bo lts is matched to the factory instal led rims. If
d iffere nt rim s are fitted, the corr ect w heel bo lts w it h t he rig ht le ngth
and correctly shaped bolt heads must be used. This ensures that
w he els are fitted securely and that the brake sys tem func tions
correctly.
I n certa in c ircums ta nces, you may not use wheel bo lts from
a
different vehicle -even if it is the same model=> page 368.
& WARNING
Improperly tightened or maintained wheel bolts can become loose
causing loss of control , a collision and serious personal injury .
• Always keep the wheel bolts and the threads in the wheel hubs
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 driving 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 loosen and come out when the
vehicle is moving . If the tightening torque is too high, the wheel
bolts and threads can be damaged and the wheel can become
loose .
0 Note
The specified torque for the wheel bolts is 9 0 ft lb (120 Nm) with a
to lera nce of± 7,4 ft lb(± 10 Nm). Torque whee l b o lt s d ia go nally.
Af ter changing a wheel, the torque must be checked as soon as .,_
Vehicle care I t •

-Tires and wheels
PW-------------------
possible with a torque wrench -preferably by an authorized Audi
dealer or qualified workshop. •
Low aspect ratio tires
Your Audi is factory-equipped with low aspect ratio tires . These tires
have been thoroughly tested and been selected specifically for your
model for their superb performance, road feel and hand ling under
a variety of driving conditions . Ask your authorized Audi dealer for
more details.
The low aspect ratio of these tires is indicated by a numeral of
55 or
less
in the tire's size designation. The numeral represents the ratio
of the tire's sidewa ll height in relat ion to its tread width expressed
in percentage. Conventional tires have a height/width ratio of 60 or
more.
The performan ce of low -aspect-ratio tires is particularly sensitive 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 maintained. T ire pres­
s ures should be checked at least once a month and always before a
long trip => page 379,
"Checking tire pressure".
What you can do to avoid tire and rim damage
Low aspect ratio tires can be damaged more easily by impact with
potho les, curbs, gullies or ridges on the road, particularly if the tire
is underinflated.
In order to minimize the occurrence of impact damage to the tires
of your vehicle, we recommend that you observe the following precautions:
• Always ma inta in 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 gu llies 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 possib le.
• T hese tires may wear more quickly than others .
• Please also remember that, whi le these tires deliver respons ive
handling, they may ride less comfortably and make more noise than
other choices .
Reduced performance in winter /cold season
conditions
A ll tires are designed for certain purposes. The low aspect ratio,
u ltr a high performance tires originally installed on your vehic le 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 vehic le
with all -season or winter tires , wh ich 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 329for more detailed information regarding winter
tires. •

___ G_ e_n_ e_ r_ a _l _i_n _f _o _ r_ m_ a_ t_ i_ o _ n ________________________________________________ _
0 Note
• The vehicle capacity weight figures apply when the load is
distributed evenly in the vehicle (passengers and luggage). When
transporting a heavy load in the luggage compartment, carry the
load as near to the rear axle as possible so that the vehicle's
handling is not impaired.
• Do not exceed the maximum permissible axle loads or the
maximum gross vehic le weight. Always remember that the vehic le's
handling will be affected by the extra load. Therefore, adjust your
speed accordingly .
• Always observe local regulations. •
Dimensions
The specifications refer to the basic model. Differences may occur
depending on the mode l type and options ordered, for example, tire
sizes.
0 Note
When driving up steep ramps, on rough roads, over curbs, etc. it is
important to remember that some parts of your vehicle, such as
spoilers or exhaust system components, may be close to the
ground. Be careful not to damage them. •