width AUDI Q7 2012 Owner´s Manual

130 Audi side assist
-The radar sensor's vision can be reduced
or entirely blocked by rain, snow, and
heavy spray . This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at all.
Always keep an eye on the direction you
are traveling and the relevant area
around the vehicle.
- Please note that side assist indicates
there are approaching vehicles, or vehi­ cles in your blind spot, only after your ve­
hicle has reached a driving speed of at
least 19 mph (30 km/h).
- Side assist signal does not work around
tight corners (turning radius less than
328 feet, or 100 m).
- Side assist is no replacement for the driv­
er's full attention. The driver alone is re­
sponsible for lane changes and similar
driving maneuvers. Always keep an eye
on the direction you are traveling and the relevant area around the vehicle.
- To ensure that you do not adversely af­
fect side assist, do not block the area on
the rear bumper where the radar sensors
are located with foreign objects (such as
stickers or bicycle racks).
- Make sure that the signal light on the
outside mirror is not blocked by stickers
or other items.
(Di Tips
- Side assist automatically deactivates if it
detects that the radar sensors are
blocked ¢
page 135. The indicator light
on the button goes out .
- The area on the bumper where the radar
sensors are located must consistently re­
main free of snow, ice, and heavy soiling
so that side assist can function properly.
Follow the additional notes on
¢page 136.
-For vehicles with a factory installed tow­
ing hitch* or a trailer hitch* that was in­
stalled later according to factory specifi­
cations, side assist is automatically deac- tivated
as soon as the electrical connec­
tion to the trailer electrical socket is made
¢ page 135.
-For vehicles with a trailer hitch that was
not installed according to factory specifi­
cations, switch off the side assist when
towing a trailer .
- Additional tinting on the front side win­
dows can make it harder to see and cor­
rectly understand the signal light on the
outside mirror.
- For Declaration of Compliance to United
States FCC and Industry Canada regula­
tions¢
page 322.
Sensor detection area
Applies to vehicles: with side assist
-----··· .... ·--·--
@ / ,
--­
ill b''T -
Fig. 150 Sc hematic illustration: Sensor detectio n area
The detection ¢ fig. 150 of the radar sensor
detection area is made up of:
-
- the approach area (light red area) (D, about
230 feet (70 m) behind the vehicle, and
- the "blind spot" (dark red area) @.
The radar sensors cover the adjacent left and
right lanes. Other lanes are
not covered by the
radar sensors.
(D Tips
Side assist does not measure actual lane
width. The system assumes a fixed lane
width . Detection in the left and right lanes
is based on this assumed lane width.
When driving on narrow roads or when
driving to the left or right of the center of
a travel lane, it is possible that vehicles
will be detected that are
not in the lane

134 Audi side assist
but is not considered notable in the event of a
l ane change, because it is dropping back so
qu ickly. The s ignal on the outside m irror does
not light up¢.&.
in Safe ty tips on page 136.
@ Signal on outs ide mirror does not light
up
If you activate your turn signal in driving sit­
uation @, the signa l st ill does not light up on
the outside mirror¢.&.
in Safe ty tips on
page 136 .
MMI settings
Applies to vehicles: with side assist
The basic brightness se tting of the signal on
t he ou tside mirror can be adjusted via the
MMI .
.. Select : Function button ICARI > Contro l but­
ton
Systems* > Audi side assist . Or
.. Select : Function button
ICARI > Control but­
ton
Car systems* > Driver assist > Audi side
assist.
The brightne ss of the signal light for both the
in format ional and alert stages is automatical ­
ly adjusted to amb ient light conditions. In ad­
d ition, you can adjust the
basic brightness
sepa rately, via the brigh tness function.
Wh ile making the adjustment, the new
brightness setting is displayed briefly . The
brightness displayed is that of the informa­
tional stage signal. The alert stage signal
brightness is linked to the informational stage
signal brightness.
The informational stage signal br ightness
should be adjusted so that you not ice the sig­
nal illuminat ion when yo u loo k in the outside
mirror, but not when you look forward
through the windshield.
I n very dark or l ight surroundings , the auto­
mat ic brightness setting adjusts signal light
brightness to maximum or minimum intensi ­
ty, as needed. In circumstances such as these,
you may not notice any change in the bright­
ness on the outside mirror when ad justing the
basic brightness .
You may not notice the change until lighting
conditions are normal again.
(D Tips
-Side ass ist is not active when the basic
brightness is adjusted . The s ignal light
comes on briefly to help you make the
adjustment .
- Yo ur settings are automatically stored
and assigned to the remote contro l key
being used.
· General information '
App lies to vehicles : wit h side assist
Side assist has limits and canno t detect vehi­
cles under all road and weather condit ions .
Please remember system limitations and nev­
er rely on the system , especially when :
- driving through curves¢
page 134,
-lanes are of different widths¢ page 135.
' When driving through curves
Applies to vehicles: wit h side assist
Side assist cannot detect vehicles in curves
with a turning rad ius of less than 328 feet
(100 m).
When driving through a curve, it is poss ible
that side assi st m ay reg ister a veh icle two
lanes over, and the signal on the outside mir­
ror will light up.

Lane width
Applies to vehicles: with side assist
-· Fig. 155 Lan es o f a norma l wid th a re in detect ion area
Fig . 156 Narrow lanes: Side ass ist may detect vehicles
two la nes away
Side assist's detection area is designed to cov­
e r l anes of standard w idth to the left and
r ight of your travel lane, depending on wheth­
er you dr ive in the center of your lane or closer
to the edge.
I f you drive in narrow lanes, s ide ass ist's de­
tec tion a rea may a lso incl ude other lanes -es­
pec ia lly if you tend to drive on the edge of
your lane
c:::> fig. 156 . Under these cond it ions,
ve hicles can also be detected that are two
lanes away, and side assist then could switch
between the informat ional and warn ing stage
signals.
When driving in very wide lanes, vehicles in
the adjacent lane may not be detected be ­
cause they are not inside the detection area.
Notes
Messages in instrument cluster display
Applies to vehicles: with side assist
If s ide ass ist t urns off automa tically, the ind i­
cator l igh t on the button wi ll go ou t and you
Aud i side assist 135
will see a message in the instrument cluster
display:
Audi side assist not available: sensors
bloc ked
The side assist sensors are built into the rear
bumper on the left and r ight (not visible on
the outside)
c:::> page 129, fig . 147. To ensure
that you do not adversely affect the way side
ass ist functions, foreign objects (such as stick­
ers or bicycle racks) should not be attached to
the area on the rear bumper where the sen­
sors a re located . If side ass ist functions are
adverse ly affec ted, you w ill see th is message
in the instrument cluster disp lay . Remove any­
th ing t hat may be blocking the sensors.
If no vehicle is detected for a longer per iod of
t ime wh ile dr iv ing, s ide ass ist w ill also switch
off automatically.
Audi s ide as sist cu rrentl y not available
If there is a temporary problem (such as the
vehicle 's battery charge be ing low), side assist
cannot be act ivated temporar ily .
Audi side assis t: sy stem fault
Have the system checked by an author ized Au­
di dealer or qualified workshop.
Audi side assist not availabl e when
towing
The radar sensor's view is limited when tow­
ing a tra iler. For vehicles with a factory instal­
led towing hitch or a trailer hitch that was in­
stalled later according to facto ry specifica­
tions, s ide ass ist is automatically deact ivated
as soon as the ele ctrical connection to the
trailer's e lectrical socke t is made, and this sta­
tus message appears in the instrument clus­
ter display. Deactivation cannot be guaran ­
teed when using a retrofitted towing hitch
that was
not installed according to factory
specifications.

136 Audi side a ssis t
Safety tips
App lies to vehicles: wit h side ass ist
The s ide ass ist detect ion may be lim ited when
d riving around narrow street corners , on hilly
streets, and under poor weathe r cond itions.
It is poss ible that the radar sensors may also
detect other objects , such as high or stag­
gered guardra ils .
Side assist does not measure actual lane
width . The system assumes a fixed lane w idth .
Detection in the left and r ight lanes is based
on this assumed lane width . When driving on
na rrow roads or when driving to the left or
right of the center of a travel lane , it is possi ­
b le that vehicles will be detected that are
not
in the lane next to the lane you are using.
A WARNING
- Improper reliance on the s ide assist sys­
tem can cause collisions and serious per­
sonal injury :
- Never rely only on side assist when
changing lanes .
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side ass ist cannot detect a ll vehicles un­
der all cond itions- danger of accident!
- Side ass ist cannot detect vehicles in time
to alert you when they approach from beh ind at very h igh speed, or fall d rop
back very quickly.
- T he radar sensor's
vision can be reduced
or entirely blocked by rain, snow, and
heavy spray. This can result in side assist
not adequately detecting vehicles or, in
some cases, not detecting them at a ll.
Always keep an eye on the direction you are traveling and the relevant area
around the vehicle .
- Please note that side assist indicates
there are approaching vehicles, or vehi­
cles in your blind spot, only after your ve­
hicle has reached a driving speed of at
least 19 mph (30 km/h). -
Side assist signa l does not work around
tight corners (turning radius less than
328 feet, or 100 m).
- Side assist is no replacement for the driv­
er 's full attention. The driver alone is re­
sponsible for lane changes and sim ilar
driving maneuvers. Always keep an eye
on the d irect ion you are traveling and the
re levant area around the vehicle.
(D Note
To ensure that side assist is not adversely
affected, you should not block the area on
the rear bumper where the radar sensors
are located with foreign objects (such as
with stickers or bi cycle racks).
(D Tips
If the pos itions of the radar sensors have
been changed as a result of a rear end-co l­
lision, for instance, have s ide assist
checked by an autho rized Aud i dealer for
safety reasons.

24 0 Cl eaning and protec tio n
Automatic car wash
The vehicle can be washed in almost any
modern automatic car wash .
The vehicle paint is so durable that the vehicle
can normally be washed without problems in
an automatic car wash. However, the effect on
the paint depends to a large extent on the de­
sign of the facility, the filte ring of the wash
water, the type of wash and care mater ial , etc.
I f the pa int has a dull appearance afte r going
through the car wash or is scratched, bring
this to the attention of the operator immedi­
ately. If necessary, use a different car wash.
Before going through a car wash, be sure to
take the usual precautions such as closing the
windows and the Panoramic sliding s unroof.
Factory installed antennas must not be re­
moved.
I f you have installed additional accessories on
the vehicle - such as spoilers, roof rack, etc. -
it is best to ask the car wash operator if these
should be removed.
A WARNING
Please take note of the following po ints
before going through an automatic car
wash with your vehicle, so that you can avoid damage to your vehicle .
- Compare the track of your vehicle with the distance between the gu ide rails of
the fac ility- there is a risk of damage to
the whee ls and t ires.
- Compare the height and w idth of your
vehicle with the height and width of the
t u nnel at the facility.
- Fold the exte rior mirrors flat - t here is a
risk of damag ing the exte rior m irrors.
Power folding exterior mirrors* mus t not
be folded in or out by hand. Use the pow­
er function!
- Do not al low the wiper blade to fall onto
the windshield after the vehicle is dried -
there is a r isk of damag ing the paint on
the hood .
- Always read and heed all WARNI NGS and
other information ¢
page 239.
Washing the vehicle by hand
A lot of water is needed when washing a vehi­
cle by hand .
.,. Before you start washing, make sure you
have read and understood the WARNINGS
¢ .&. in General information on page 239 .
.,. First soak all dried d irt unt il it is soft, then
r inse it off .
.,. As you clean you r vehicle , start w it h the
roof and work your way dow n to the bo ttom,
using a sponge, a sponge g love or a clean
brush.
.,. Rinse the sponge or the sponge glove often,
flushing it clean each time.
.,. Use spec ial car shampoo only for very per­
sistent d irt .
.,. Rinse the car thoroughly wit h water .
.,. Use a chamo is leather to gently w ipe the ex-
ter io r d ry.
Use a separate sponge for cleaning the
wheels, door s ills and other regions exposed
to road dirt . In this way, you will not scratch
the pa int with coarse pa rticles imbedded in
the sponge the next time you wash the car.
A WARNING ~ -
- Do not clean the underside of the chas­
sis, fenders, wheel covers , or other ha rd
to reach pa rts without protect ing your
hands and arms . You may cut yourself on
sharp-edged metal parts.
- Always read and heed a ll WARNINGS and
other information ¢
page 239.
(D Note
- Never try to remove dirt, mud or dust if
the surface of the ve hicle is dry . Never
use a dry cloth or sponge, s ince this
co uld scratch your vehicle's paint or win ­
dows .
- Never wash your car in bright s unlight.
Drops of water act as magn ifying lenses
and may damage your paint .
- When you wash your car in the winter: if you rinse your vehicle with a hose, be careful not to aim the stream of water

2 76 Tires and wheels
M aximum loaded vehicle weight
means t he sum of:
(a) Curb weight
(b) Accessory weight
( c ) Vehicle capacity we ight, and
(d) P rod uction options weight
Maximum (permissible) inflation pressure
means t he max imum co ld inflation pressu re
to which a tire may be in flate d. Also called
"maxim um inflation p ress ure."
Normal occupant weight
means 150 lbs. (68 kilog rams) times the
nu mbe r of o ccupants seated in t he vehicle up
to the tota l sea ting capaci ty of yo ur vehicle .
Occupant distribution means dist ribution of occupants in a veh icle .
Outer diameter means t he overa ll diameter of a n inf lated new
tire.
Overall width
means t he linear dis tan ce between the ex ter i­
ors o f th e sidewalls of an inflated tire, in cl ud­
ing e levations due to labeling, decorations, or
p rotective bands o r ribs.
Ply
mea ns a laye r of r ubber-coate d parall el c ords.
Production options weight
means t he comb ined we ight of those installed
regular produc tion options weigh ing ove r 5
l bs . (2 .3 kg) in excess of t hose standard items
which they repla ce, no t previously considered
in cur b weight o r acc essory weig ht, incl uding
h eavy duty brakes, r ide leve le rs, roof ra ck,
h eavy duty ba ttery, a nd specia l trim .
Radial ply tire
means a pneumatic t ire in which the p ly co rds
that ex tend to the beads are laid a t sub stan ­
ti ally 9 0 degrees to the ce nt erline o f the
tread . Recommended inflation pressure
see
~
page 2 75, C old tire infla tion pressure.
Reinforced tire
means a t ire design to operate at h igher loads
and at h igher inflation pressures than t he cor­
r espondi ng stan da rd tire. Reinforced tires
may be identifie d as "X L", "xl" , "EX TRA LOAD",
o r "RF " on t he sidewal l.
Rim
means a metal su ppo rt for a tire or a t ire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter of the bead seat.
If
you change your wheel s ize, you wi ll have to
purchase new tires to match th e new r im di­
ameter .
Rim size designation
means r im diameter and width.
Rim width
means nom inal d ista nce between rim flanges .
Sidewall
means tha t po rtion of a t ire betw ee n t he
t read and bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
r a ti ngs range from 93 mph ( 150 km/h) to
186 mph (298 km/h)
~ page 286 . You may
not fi nd this information o n all ti res because
it is no t re quir ed by law.
T he speed rating letter code, wh ere applica­
ble , is molde d on the tire sidewall a nd indi­
c ates the max imum pe rmissibl e road speeds
~ A in Winter tire s on page 290 .
Tire pressure monitoring system
mea ns a system that detects when o ne or
more of a ve hicle 's tires are unde rinf lated an d
i lluminat es a low tir e pr essure wa rning t ell-
tal e. ..,_

A WARNING
Sudden tire failure can lead to loss of con­
trol, a crash and serious personal injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- Worn tires are a safety hazard, they do
not grip well on wet roads and increase
your risk of "hydroplaning" and loss of
control.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- Tires age even if they are not be ing used
and can fail suddenly, especially at high
speeds . Tir es that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used tires on your vehicle if
you are not sure of their" previous histo ­
ry ." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
Tires and wheels 285
New tires and replacing tires and wheels
New tires and wheels have to be broken in .
Fig. 241 Tir e specificat ion codes on t he s idewall o f a
tire
No. Description
CD Passenger car tire (where applicable)
@ Nominal width of tire in millimeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® Load index and speed rat ing
(f) U.S. DOT tire identification number
® Audi Original tire
® Sever snow conditions
@ Tire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
vehicle's design . The tires and rims approved
by Audi are specially matched to the charac­
teristics of the vehicle and can make a major .,.
•

286 Tires and wheels
contribution to good road ho lding and safe
handling when in good condition and properly
inflated
¢ ,& .
We recommend that all work on tires and
wheels be performed by an authorized Audi
dealer. They are familiar with recommended
procedures and have the necessary spec ial
too ls and spare parts as well as the proper fa­
cilities for disposing of the old tires.
Authorized Audi dealers have the necessary information about technical requ irements for
installing or changing tires and r ims.
Replacing tires and wheels
Tires should be rep laced at least in pairs and
not individually (for example both front tires
or both rear tires together).
Be sure to read and heed the information to
the tire pressure monitoring system
¢pa ge 292.
Always buy rep lacement radial tires that have
the same specifications as the tires approved
for your vehicle by Audi. Replacement t ires
must always have the same load rating speci­
fication as the original equipment or approved
optional tires listed in the table
c:> page 2 78.
Aud i-approved specification ti res are specially
matched to your vehicle and its load limits,
and can contribute to the important road hold­
ing, driving characteristics, and safety of the
vehicle. The table
(c:> page 2 78) lists specifica­
tions of the tires approved for the Audi mod­
els covered by your Owner's Literature .
The tire pressure label located on the driver's
side B-pillar
c:> page 2 78, fig. 238 lists the
specifications of the original equipment tires
installed on your vehicle at the time it was
manufactured.
Federal law requires tire manufacturers to
place standard ized information on the s ide­
wall of all tires
c:> fig. 241 . This information
identifies and describes the fundamental
characterist ics, the quality grade of the tire
and also provides a tire ident ificat ion number f
or sa fety standard certification and in case of
a reca ll.
Tire specifications
Knowledge of tire specificat ions makes it eas­
ier to choose the correct tires. Radial tires
have the tire specifications marked on the
sidewa ll, for examp le:
P255 / 55 R 18 109 H XL
This conta ins the following information:
P Indicates the tire is for passenger cars
(where app licab le)
255 Nominal tire width in mm of the tire
from sidewall edge to sidewall edge. In
general, the larger the number, the wider
t he tire
55 Height/width ratio in percent (aspect ra-
t io)
R Tire construction: Radial
18 Rim diameter code (in inches)
109 Load rating code
H Speed rat ing letter code
XL (or "xl", "EXTRA LOAD", or "RF" Indicates
that the tir e is a"Re inforced" or an "Extra
Load " tir e
M+S (or "M/S") Indicates that the tire has
some mud and snow capability
The tires could also have the information of
direction of rotat ion
c:> page 274 .
Tire manufacturing date
The manufacturing date is also indicated on
the tire sidewall (possibly on ly on the
inner
side of the wheel):
"DOT ... 2211. .. " means, for examp le, that
the tire was produced in the 22nd week of
2011.
Speed rating (letter code)
The speed rating letter code on the whee ls in­
dicates the maximum permissible road speeds
c:> & in Winter tires on page 290 .
P up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
R up to 106 mph ( 170 km/h)

288 Tire s and whee ls
- All four wheels must be fitted with radia l
t ires of the same type, size (rolling c ir­
cumference) and the same tread pattern.
Driv ing with different tires reduces veh i­
cle handling and can lead to a loss of
control.
- If the spare tire is not the same as the
t ires that are mounted on the veh icle -
for example with winter tires - on ly use
the spare tire for a short period of time
and dr ive with extra care. Refit the no r­
ma l road whee l as soon as safely possi ­
ble.
- Never drive faster than the maxim um
speed for which the tires on your vehicle
are rated because tires that are driven
faster than their rated speed can fail
sudden ly.
- Overloading ti res cause heat build-up,
sudden tire failure, including a blowout
and sudden deflation and loss of control.
- Temperature grades app ly to tires that
are properly inflated and not over or un­
derinflated.
- For technical reasons it is not a lways
poss ible to use wheels from other vehi­
cles -in some cases not even whee ls
from the same vehicle model.
- If you install wheel tr im discs on the ve­
hicle whee ls, make sure that the air flow
to the brakes is not blocked . Reduced air­
flow to the brakes can them to overheat,
increasing stopping d istances and caus­
ing a collision.
- Run flat t ires may on ly be used on vehi­
cles that were equipped with them a t the
facto ry. The vehicle mus t have a chassis
desig ned for run flat tires. Incorrect use
of run flat tires can lead to vehicle dam­
age or accidents. Check with an a uthor­
ized Audi dea ler or tire specialist to see if
your vehicle can be equ ipped w ith run
flat tires. If run f lat tires are used, they
must be installed on all four wheels. M ix­
ing t ire types is not permitted. (D Note
- For technical reasons, it is not generally
possible to use the wheel rims from oth­
er veh icles. T his can hold tr ue for wheels
of the same vehicle type.
- If the spare tire is different from the tires that you have mounted on your ve­
hicle (for example winter tires or wide
profi le tires), then use the spare tire for a
short period of time only and drive w ith
extra care. Replace the flat tire w it h the
tire mat ching the othe rs on your vehicle
as soon as possib le.
- Never d rive without the valve stem cap.
The va lves cou ld get damaged.
@ For the sake of the environment
D ispose of o ld tires in accordance w ith the
l ocal requirements.
Uniform tire quality grading
- Tread wear
- Traction AA A B (
- Temperature ABC
Quality grades can be found where applicable
on the t ire s ide wall between tread shoulder
and maximum section width
¢ page 285,
fig. 241 .
For e xample: Tread wear 2 00 , Traction AA ,
Temperature A .
All passenger car tires must conform to Feder­
al Safety Requirements in addition to these
grades .
Tread w ear
The tread wear g rade is a comparative rating
based on the wear rate of the tire when tested
u nder contro lled conditions on a specified
government test course.
For example, a tire graded 1S0 wo uld wear
one and one ha lf (11/2) times as well on the
government course as a tire graded 100.

driving a few yards and correct if neces­
sary . Follow the instructions from the
snow cha in manufacturer when doing so.
- If the Adaptive Air Suspension* should
malfunction, do not mount or use snow
chains beca use the 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.
(0 Tips
W here 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 cor rect wheel bolts wit h the right
lengt h and correctly s haped bolt heads must
be used. This ens ures t hat w heels a re fitted
secure ly an d that the brake system f unctions
correctly.
I n ce rtain circumstances, you may not use
wheel bo lts from a d ifferent vehicle -even if it
is the s ame mode l~
page 3 21.
& WARNING
Improperly tig htened or maintained whee l
bolts can become loose ca using loss of
cont ro l, a co llision and serious persona l in­
jury.
- Always keep the w heel bolts and the
threads in the wheel hubs clean so the
wheel bolts can turn easily and be prop­ erly t ightened.
- Never grease or oil the wheel bolts and the threads in the wheel hubs. They can
become loose w hile driving if greased or
o iled, even if tig hte ned to the specified
torq ue.
Tire s an d wheel s 2 91
-On ly use whee l bolts that be long to the
rim being installed.
- Never use different wheels bolts on yo ur
veh icle.
- Always maintain the correct t ightening
torque for the whee l bolts to reduce t he
risk o f a wheel loss. If the tightening tor­
que of t he wheel bolts is too low, they
can loosen and come out when t he vehi­
cle is mov ing.
If the tig hte ning torque is
too high, the wheel bolts and threads can be damaged and the whee l can be­
come loose.
(D Note
The specified torque for the whee l bolts is
120
ft l b ( 160 Nm) with a to le rance of
± 7, 4
ft lb( ± 10 Nm). Torque w heel bo lts
d iagon ally . After changi ng a w heel, the
torque m ust be chec ke d as soon as poss i­
b le with a to rque wrench -preferab ly by an
a uthorized Audi dea ler or q ua lified work­
shop .
Low aspect ratio tires
Your Audi is factory-equ ipped with tow aspect
ratio tires. These tires have been thoroughly
tested and been se lected specifically for your
model for their superb perfo rmance, road feel
and handli ng under a var iety of drivi ng condi­
tions. As k your au thori zed A udi dealer for
more de tails.
The low asp ect ratio of these tires is ind icated
by a nu mera l of
55 or l ess in the tire's s ize
designation. The n ume ra l rep resen ts the ra tio
of the tire's sidew all height in rel ation to its
tread width exp ressed in percentage . Conven ­
tiona l tires have a he ight/width ratio of 60 or
more.
The performance of low-aspect-ratio tire s is
particularly sensitive to improper inflation
pre ssure. It is therefore important th at low
aspect ratio tires are inflated to the specified pressure and that the inflation pressure is
regularly checked and mainta ined. Tire pres-
sures should be checked at least once a .,..
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