tire size AUDI RS7 SPORTBACK 2014 Owners Manual

Safety belts
General notes
Always wear safety belts!
Wearing safety belts correctly saves lives!
This chapter explains why safety belts are nec­
essary, how they work and how to adjust and
wear them correctly.
~ Read all the information that follows and
heed all of the instructions and WARNINGS.
A WARNING
Not wearing safety belts or wearing them
improperly increases the risk of serious
personal injury and death.
- Safety belts are the single most effective
means available to reduce the risk of se­
rious injury and death in automobile acci­
dents. For your protection and that of
your passengers, always correctly wear
safety belts when the vehicle is moving.
- Pregnant women, injured, or physically
impaired persons must also use safety
belts. Like all vehicle occupants, they are
more likely to be seriously injured if they
do not wear safety belts. The best way to
protect a fetus is to protect the mother -
throughout the entire pregnancy.
Number of seats
Your Audi has a total of four seating positions:
two in the front and two in the rear. Each seat­ ing position has a safety belt.
A WARNING
Not wearing safety belts or wearing them
improperly increases the risk of serious
personal injury and death.
- Never strap more than one person, in­
cluding small children, into any belt. It is
especially dangerous to place a safety
belt over a child sitting on your lap.
- Never let more people ride in the vehicle
than there are safety belts available.
Safety belts 13 3
-Be sure everyone riding in the vehicle is
properly restrained with a separate safe­
ty belt or child restraint.
~ Safety belt warning light
Your vehicle has a warning system for the
driver and front seat passenger (on USA mod­
els only) to remind you about the importance
of buckling-up.
Fig. 148 Safety belt warning light in the instr ument
cl uster -enla rged
Before driving off, always:
~ Fasten your safety belt and make sure you
are wearing it properly.
~ Make sure that your passengers also buckle
up and properly wear their safety belts.
~ Protect children with a child restraint sys-
tem appropriate for the size and age .
The warning light . in the instrument cluster
lights up when the ignition is on as a reminder
to fasten the safety belts. In addition, you will
hear a warning tone for a certain period of
time .
Fasten your safety belt and make sure that
your passengers also properly put on their
safety belts.
A WARNING
- Safety belts are the single most effective
means available to reduce the risk of se­
rious injury and death in automobile acci­
dents. For your protection and that of
your passengers, always correctly wear
safety belts when the vehicle is moving.
•
•

Driving with your
quattro
With all-wheel drive, all four wheels are driv­
en .
General information
With all-wheel drive, power is distributed to
all four wheels . This happens automatically
depending on your driving style and the road
conditions at the time . See also
t::;> page 189.
A center differential distributes the driving
power variably to the front and rear axle. It
works together with selective wheel torque
control, which activates when driving through
curves
t::;> page 190 . With the sport d ifferen­
tial*, power distribution to the rear wheels is
va riable and can be adjusted with drive select
¢page 96.
The all-wheel drive concept is designed for
hi gh engine power. Your vehicle is exception­
ally powerful and has exce llent dr iv ing charac­
teristics both under normal driving conditions
and on snow and
ice. Always read and follow
safety precautions
t::;> .& .
Winter tires
When driving in the w inter, your ve hicle with
all-wheel drive has an advantage, even with
regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-sea­
son t ires) for improved driveability and brak­
ing: these tires must be mounted on
all four
wheels. See also ¢ page 243, Winter tires.
Tire chains
Where tire chains are mandatory on certain
roads, this normally a lso applies to vehicles
with a ll-wheel drive¢
page 244, Snow
chains.
Replacing wheels/tires
Vehicles w ith all-wheel drive must always
have tires of the same size. Also avoid tires
with different tread depths. For details see
page
t::;> page 239, New tires and replacing
tires and wheels .
Intelligent technology 195
Off•Road driving?
Your Audi does not have enough g round clear­
ance to be used as an off-road vehicle.
It is
therefore best to avoid rough tracks and un ­
even terrain as much as possible. Also refer to
¢page 199.
A WARNING
Always adjust your dr iv ing to road and traf­
fic conditions. Do not let the extra safety
afforded by all-wheel drive tempt you into
taking extra risks.
- Although the all-wheel drive is very ef­ fective, always remember that braking
capacity is lim ited by tire traction. You
should therefore not drive at excessive
speeds on icy or slippery road surfaces.
- On wet road surfaces, be careful not to
drive too fast because the front wheels
could begin to slide on top of the water
(aquaplaning) . If this should occur, you
will have no warning from a sudden in­
crease in engine speed as with a front­
wheel drive veh icle. Always drive at
speeds which are su ited to the road con­
ditions - risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting
the engine .
If a vehicle with a conventiona l energy system
is not driven for a long period of tim e, the bat­
tery is discharged by idling current consumers
(e.g . immobilizer). In certain circumstances it
can resu lt in there being insufficient energy
available to start the eng ine.
Intelligent energy management in your vehi­
cle handles the distribution of e lectrica l ene r­
gy. Starting ability is markedly improved and
the life of the battery is extended .
ll>
•
•

230 Tires and wheels
Groove
means the space between two adjacent tread
ribs .
Load rating (code)
means the maximum load that a tire is rated
to carry for a given inflation pressure. You
may not find this informat ion on all tires be­
cause it is not req uired by law.
Maximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation pressure for that
tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity we ight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure
to which a tire may be inflated. Also called
"maximum inflation pressure ."
Normal occupant weight
means 150 lbs. (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle .
Occupant distribution
means distribution of occupants in a vehicle.
Outer diameter
means the overa ll diameter of an inflated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing elevations due to labeling, decorations, or
protective bands o r ribs .
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the combined weight of those insta lled
regular production options weighing over 5
lbs. (2.3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory we ight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special tr im .
Radial ply tire
means a pneumat ic tire in which the ply cords
that extend to the beads are laid at substan­
t ia lly 90 degrees to the center line of the
tread .
Recommended inflation pressure
see<=> page 229, Cold tire inflation pressure.
Reinforced tire
means a t ire design to operate at higher loads
and at h igher inflation pressures than the cor­
responding standa rd tire. Reinforced tires
may be identified as "XL" "xl" "EXTRA LOAD"
' ' '
or "RF" on the sidewa ll.
Rim
means a metal support for a tire or a tire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal diameter of the bead seat. If
you change your wheel s ize, you will have to
purchase new tires to match the new rim di­
ameter.
Rim size designation
means r im diameter and width .
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a tire between the
t read and bead.

232 Tires and wheels
Occupant loading and distribution for vehicle normal load for various designated seating
capacities
Designated seating capacity, Vehicle normal load , number Occupant distribution in a nor -
number of occupants of occupants mally loaded vehicle
4 2 2 i
n front
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 195 T ire press ure label : located on driver's side B·
pillar
Tire pressure genera lly refers to the amount
of air in a t ire that it needs it to do its job and
safely carry the combined load of the entire
vehicle and its contents . Tire pressure is
measured in kilopasca ls (kPa), the i nterna·
tional measur ing unit and in pou nds pe r
squa re inc h (PSI). Tire pressure is based in
p art o n the vehicle's design and load limit -
the greatest amount of weight that the vehi·
cle can carry safe ly and the t ire size . The prop·
er tire pressure is freq uently referred to as the
"recommended cold tire inf lation pressure."
A ir in the tires expands when the tire heats up
because of internal frict ion when it flexes in
use . The t ire p ressu re is higher when the tire
has wa rmed up tha n when it is "cold ." It is the
in flat ion pressu re i n a "cold" tire that counts.
Therefore, you shou ld neve r let air ou t of a
warm tire to match " co ld tire infl ation pres­
sure" recommendations . The t ires wo uld then
be underinflated and could fail suddenly .
M ain taining p roper t ire pr essu re is one of the
most im po rt an t th ings you can do to he lp
avoid sudden tire failure. Underin fla ted t ires
a re a ma jo r cause of s udden tire failure. Keep·
i n g tires at the right pressure is also impor­
tant for safe and responsive vehicle handling,
-U'>
-
---------------------- ,;
•(=~= I: I::... 1)§ :l!: n-...,....,....,~ ...... ~-...,..., ..... _ ... U ........ ~-·~N.-..-.we..... .... lllt-
-AVANT ...,.
-...... .. _
-KPA. a PSI
- KPA.
a PSI
-KPA. a PSI
Fig. 196 Ti re pr essure labe l
SEE OWNEJICS MANUA1 FOA A,DOITl<>N.IU. INfORMATlON VOIR L£ MANUll DUPR0ftlET""" P"OUR i-t.US DE RENSEIGMEMENfS
traction, braking and load carrying. Tire pres­
sures are particularly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permissible load-carrying capaci­
ties approved for your vehicle .
The recommended tire pressures for your Audi
depe nd on the kind of tires o n your ve hicle
and the numbe r of passe ngers and/o r amount
of luggage you w ill be t ransporti ng .
The tire pressure label is located on the driv­
er 's side B-pillar . The tire pressure labe l lists
the recommended cold t ire inflat io n press ures
for the vehicle at its maximum capac ity
weight and tires t hat were o n your veh icle at
t h e time it was m anufactur ed .
If you wish to improve comfort wh en operat­
ing the vehicle at normal load (up to 2 occu­
pant s), you can ad just tire pre ssure s to tho se
specified f or normal vehicle load . Before op­
erating the vehicle at maximum load, you
mu st increase the ti re pressures to those
specified for maximum vehicle load
~ ,&. .
Bear in min d that the tire pressure mon itor ing
system ca n only moni to r the tire pressures .,.

Tires an d wheel s 233
you have stored. The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the ti re pressu re monitor­
ing sys tem w ill be impaired if you store no r­
mal load pressures but then operate the vehi ­
cle at its maximum load¢,& .
See the illustration ¢
fig. 195 for the location
of the label on dr iver's side B-pillar (color of
the actual labe l and exact location on the ve­
hicle wi ll vary slig htly) .
Note that the fo llowing tab le is accurate at
the t ime o f go ing to press and is subject to
Model/ Tire de
signation
c h ange. In the event of discrepancies, the ti re
pressure label is located on the driver's side B­
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflat ion pressures for the Audi mode l
covered by your Owner's Literat ure at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as orig inal
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
(up to 2 occupants )
front r ear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
RS 7 275/35 R20 102V XL
36 2S0 30 210 39 270 39 270 Sportback: High P erformanc e
4.0 lit er
275 /30 R21 98V XL
a -cy linder
High Performance
41 280 38 260 45 310 4S 3 10
X L = r einfor ced or extra load tir e. It ma y al so appear a s xl , EXTRA LOAD, or RF on th e tire side -
w all.
Because tec hnical changes may be made to
ve hicl e equ ipment dur ing the model yea r, a l­
ways compare the tire s ize designation on the
tire pressure label on your vehicle with the
tires on your vehicle . Make s ure that the tire
size information on the vehicle label is the
same as the s ize of the t ires on the vehicle.
This is especially important if the vehicle be­
longs to someone else or you bought the veh i­
cle with different rims/tires or you bought the
veh icle as a previously owned vehicle.
Remember, your safety and that of your pas­
sengers also depends on mak ing sure that
load limits are not exceeded . Vehicle load in­
cludes everybody and everything in and on the
ve hicl e. These load limits are technically refer­
r ed to as the vehicle's G ross Vehicle We ight
Rating ("GVWR"). The Gross Ax le Weight Rat­
ing ("GAWR") is the maximum load that can
be applied at each of the vehicle's two axles .
The Gross Vehicle We ight Rating and the G
ross Ax le Weig ht Rating are listed on the
sa fety comp liance sticke r label lo cated on the
driver's side B-pillar . The tire pressu re labe l on
your A udi lists the maximum combined
weight of all of the occ upants and luggage o r
other cargo that the veh icle can carry. For the
location of the t ire pressure label ¢
fig. 195.
A WARNING
-Overloading a vehicle can cause loss of ve-
h icle contro l, a crash or other accide nt, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was des igned to carry will prevent the
veh icle from handling properly a nd in­
crease the risk of a loss of vehicle con­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
veh icle w ith in a safe distance.
•
•

238 Tires and wheels
symbols) indicate the positions of the tread
wear indicators. Worn tires must be replaced. Different figures may apply in other countries
c::> & .
Tire pressure
Incorrect tire p ressure causes premature wear
and can cause sudden tire blow-out. For this
reason, tire pressure must be checked at least
once a month
c::> page 234.
Driving style
Driving fast around curves, heavy acceleration
and hard braking increase tire wear.
Rotating tires for more even wear
For all four tir es on your vehicle to have the
same se rv ice life, we recommend that the
front and rear tires are rotated according to
the tire manufacturer's suggested tire rota­
tion intervals. Please remember the follow­
ing:
- T ire rotation inte rva ls may differ from the
vehicle serv ice intervals outlined in your
Warranty
& Maintenance booklet.
- T he longer one tire is used in one location
on the vehicle, the more it wears at certa in
points; therefore, we recommend that you
follow the tire manufacturer's suggested
tire rotation intervals.
- Vehicles with front-wheel drive experience
more tread wear on the front whee ls com­
pared to all-whee l drive (quattro).
- Please rotate ti res as shown
c::> fig. 198.
-Extra care must be taken when rotating di-
rection-specific tires
c::> page 2 59.
Wheel balancing
The wheels on new vehicles are balanced .
Ho wever, various situations during everyday
driving can cause them to become unbal­
anced, resu lting in vibrations you can usually
feel through the steering wheel.
Unba lanced wheels must be rebalanced to
avoid excessive wea r on steering, suspension
and tires . A wheel must a lso be rebalanced
when a new tire is installed. Incorrect wheel alignment
Incorrect
wheel alignment can cause exces­
sive tire wear, impairing the safety of the vehi ­
cle. If tires show excessive wear, have the
wheel alignment checked by an a uthorized
Audi dealer or qualified workshop.
All-wheel drive
Vehicles with quattro must always have tires
of the same size, construction and tread type.
For details see
c::>page 195.
_8 WARNING
-Sudden tire fa ilure 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 t ires 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, o il, gasoline
and brake fluid away from tires.
- Tires age even if they are not being used
and can fai l suddenly, especially at high
speeds. Tires that are more than 6 yea rs
old can only be used in an emergency
and then w ith specia l care and at lower
speeds.
- Never mount used tires on your veh icle if
you are not sure of their "previous histo­
ry." O ld used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire fai lure
and loss of vehicle control.

manufacturers also must indicate the materi­
als in the tire, which include steel, nylon, pol­
yester, and others.
M ax imum Load R atin g
This numbe r indicates the maximum load in
kilograms and pounds that can be carried by
the tire.
Tire qualit y gra ding for treadw ear,
t ract ion , and temp erature r esistanc e
Tread wear , traction and temperature g rades
¢ page 242.
Maximum Permissible Inflation Pressur e
This number is the greatest amount of air
pressure that sho uld ever be put in the ti re
under normal driving conditions.
_& WARNING ,...__._
- Using incorrect or unmatched tires and/
or whee ls or improper tire and whee l
combinations can lead to loss of contro l,
co llision and serious persona l injury.
- Always use tires, rims and wheel bo lts
that meet the specifications of original
factory-installed tires or other combina­ t ions that have been spec ifically ap­
proved by the vehicle manufacturer.
- Tires age even if they are not being used
and can fail suddenly, especially at high
speeds . Tires 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 su re of their "previous histo­
ry." Old used ti res may have been dam­
aged even though the damage cannot be
seen that can lead to s udden tire failure
and loss of vehicle control.
- All four wheels must be fitted with radia l
tires of the same type, size (rolling cir­ c u mference) and the same tread pattern.
Driving with different tires red uces veh i­
cle handling and can lead to a loss of
control.
Tire s an d wheel s 241
-If the replacement tire is not the same as
the t ires that are mounted on the veh icle
- for example with winter tires - only use
the replacement tire for a short per iod of
time and drive with extra care . Refit the
normal road whee l as soon as safely pos­
sible.
- Never drive faster than the max imum
speed for which the tires on you r vehicle
a re rated because tires that are dr iven
faster than thei r rated speed ca n fa il
suddenly .
- Ove rloading tires ca use heat build-up,
sudden tire fa ilure, including a blowou t
and sudden deflation and loss of cont ro l.
- Temperature grades apply to ti res that
are properly inflated and not over or un ­
derinf lated .
- F or technical reasons it is not always
possible to use whee ls from other
vehicles -in some cases not even whee ls
from the same veh icle mode l.
- If you install wheel trim discs on the ve ­
hicle wheels, make sure that the air flow
to the brakes is not b locked. Reduced air­
flow to the brakes can them to overheat, increas ing stopping d istances and caus­
ing a co llision.
- Run flat tires may only be used on
veh icles that were equipped with them
at the factory . The veh icle must have a
chassis designed for run flat tires . Incor­
rect use of ru n flat ti res can lead to vehi­
cle damage or accide nts. Che ck with an
author ized Audi dealer or tire spe cialist
to see if your vehicle can be eq uipped
with run flat tires . If run flat tires are
used, they must be installed on all four
wheels. Mixing tire types is not permit­
ted.
@ Note
- For technical reasons, it is not generally
possible to use the wheel rims from oth­
er veh icles. Th is can hold tr ue for wheels
of the same vehicle type. .,..
•
•

Winter tires
Winter tires can improve vehicle handling on
snow and ice . At temperatures below 45 °F
(7 °C) we r ecommend changing to winter
tires.
In some heavy s now areas, local governments
may require true winter or "snow " tires, those
with ve ry deeply cut tread. These t ires shou ld
only be used in pa irs and be insta lled on all
fou r wheels. Ma ke sure yo u pu rchase snow
tires that are the same size and construction
type as the other tires on your vehicle .
Your veh icle is equipped w it h all-wheel drive,
this will improve tra ct io n du ring w inte r driv­
ing, even with the s tandard tires. However, we
strongly recommend that yo u always eq uip a ll
four whee ls on your vehicle with cor rectly fit­
ted w inter tires or all-se ason tires, when w in ­
te r r oad conditions are expected . This also im­
proves the vehicle's braking performance and
reduces stopping distances .
Summe r tires provide less grip on ice and
snow.
W inter t ires (snow t ires) must a lways be fitted
on all four whee ls .
Ask yo ur autho rized Aud i dea ler o r qualified
wo rkshop fo r permi tted
winter tire siz es . Use
on ly radia l winter tires.
W inte r tir es lose the ir effectiveness when the
tread is worn down to a depth of 0.15 7 inch
(4 mm) .
Only drive with wi nter tires under winter con­
d it ions . Summer tires hand le better when
there is no snow or ice on the roads and the
temperature is above 45 °F ( 7 °C).
I f you have a flat tire, see notes on replace­
men t wheel ¢
page 239.
Please always remember that w inter tires may
h ave a lower speed rating than the t ires origi­
n a lly installed on your veh icle at the t ime it
was manufactured. Plea se see ~
page 240,
Speed rating (letter code)
for a List ing of the
speed rat ing letter codes and t he maxim um
speed at w hic h the tir es can be driven.
Tire s an d wheel s 243
The speed rating letter code(¢ page 231) is
o n the side wall of the tire~
page 239 .
A WARNING
Winter t ires have maximum speed limits
that may be lower than your vehicle's max­
imum speed. Always know the max imum
speed before driv ing off . Never drive faster
than the speed permitted for yo ur specific
winter tires . This wi ll ca use damage to the
tires leadi ng to an accident and ser ious
personal injury to you and your passen­
gers .
A WARNING ,._.__
Driving faster than the maximum speed
for which the winter tires on your vehicle
were designed can cause tire fail ure in­
cluding a blowout and sudden deflation, loss of contro l, crashes and ser ious per­
sonal injuries. Have worn or damaged tires
replaced immediately .
- Wi nter tires have maximum speed rating
that may be lower than your vehicle 's
maximum speed .
- Never drive faster than the speed for
which the w inter or othe r tires installed
on you r vehicle a re rated .
A WARNING
Always a djust yo ur dr iv ing to the road and
traffic cond it ions . Never let the good ac­
celer atio n of the winter t ires and al l-wheel
d rive tempt yo u into ta king ext ra risks. Al­
ways remember:
- W hen braking, an all-wheel drive veh icle
handles in the same way as a front drive
vehicle .
- Drive c arefully and reduce your speed on
icy and slippery roads, even w inter t ires
cannot help under black ice conditions .
@ For the sake of the environment
Use summer tires when weather condi­
tions permi t. T hey are qu iete r, do not wear
as quickly and reduce fuel consumpt ion .
•
•
-

24 4 T ire s and wheel s
Snow chains
Snow chains may be fitted on ly to the front
wheels, and only to certain tire sizes. Ask your
authorized Audi dealer on whic h tire sizes
snow chains can be used.
I f you are going to use snow chains , then you
must install them on the front wheels at
l east.
The snow chains must have low-profile links
and must not be thicker than 0.4 inch (10 ,5 mm), including the lock .
Remove wheel center covers and tr im discs
before putting snow cha ins on your vehicle
c:;, Q) _ For safety reasons cover caps must the n
be fitted over the whee l bolts. These are ava il­
ab le from authorized Audi dea lers.
A WARNING
Using the wrong snow chains for yo ur vehi ­
cle or installing them incorrectly can in­
crease the risk of loss of control leading to
ser ious personal inj ury.
- Snow chains are ava ilable in different
sizes. Always make sure to follow the in­
struct ions provided by the snow chain
manufacturer .
- When driving w ith snow chains never
dr ive faster than the speed permitted for
your specific snow cha ins.
- Always observe local regulat ions .
([) Note
-Remove snow cha ins before driving on
roads not covered with snow to avoid
damaging t ires and wear ing the snow
chains down unnecessar ily.
- Snow chains, wh ich come into d irect con­
tact with the wheel rim, can scratch or
damage it . Therefore, make sure that the
snow chains are suitab ly covered . Check
the position of the snow chains after
driving a few yards and correct if neces­
sa ry. Follow the i nstructions from the
snow cha in manufacture r when doing so.
- If the Adaptive Air Suspension* should
malfunction, do no t mo unt or use snow chains because the vehicle will be ex
­
treme ly low. If you do drive with snow
chains on while the vehicle is at this lev ­
el, the snow cha ins might severely dam­
age the whee lhouse and other parts of
the vehicle .
(D Tips
Where snow chains are mandatory on cer­
tain roads, th is normally a lso applies to
vehicles with all-wheel drive.
Wheel bolts
Wheel bol ts mus t alway s be tightened to the
correc t torque.
The design of wheel bolts is matched to the
factory installed rims . If different r ims are fit­
ted, the correct wheel bol ts with the righ t
length and correct ly shaped bolt heads must
be used . T his ensures that wheels are fitted
securely and that the b rake system functions
co rrect ly.
In certa in circumstances, you may not use
wheel bolts from a different veh icle -even if it
is the same model
c:;, page 275 .
A WARNING
Imp rope rly t ightened or ma inta ined wheel
bo lts can become loose c ausing loss of
control, a col lision and serio us pe rsonal i n­
jury .
- Always keep the wheel bo lts and the
threads in the wheel hubs clean so the
wheel bo lts can turn easily and be prop­
erly tightened.
- Never g rease or oil the wheel bolts and
the threads in t he wheel hubs . They can
become loose while driv ing if greased or
oiled, even if t ightened to the specified
torque.
- On ly use wheel bolts that belong 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 the

risk of a wheel loss . If the tightening tor­
que of the wheel bolts is too low, they
can loosen and come out when the vehi­
cle is moving. If the tightening torque is
too high, the whee l bolts and threads
can be damaged and the wheel can be­
c ome loose.
(D Note
The spec ified torque for the wheel bo lts is
90 ft lb (120 Nm) w ith a tolerance of ± 7,4
ft lb(± 10 Nm) . Torque wheel bo lts d iago­
na lly . After chang ing a wheel, the torque
m ust be che cked as soon as possib le w it h a
t orque wrenc h -preferab ly by an a utho r­
ized Audi dealer or qualified workshop.
Low aspect ratio tires
Your Audi is factory-equipp ed with low aspect
ratio t ires. These t ires have been thorough ly
tested and been selected spec ifically for your
model for the ir superb performance, road feel
and handling unde r a va riety of driving condi­
tions. Ask your a uthorized Aud i dea le r fo r
mo re deta ils.
T he low aspect ratio of these tires is indicated
by a nume ral of
55 or less in the tire's size
des ignation . T he numeral represents the rat io
of the ti re's sidewall height in relat io n t o its
tread wid th expressed in per cen tage . C o nven­
tional t ires have a height/width ra tio of 60 or
mo re.
Th e performan ce of low -aspe ct-ratio tir es is
parti cularl y se nsitive to improper inflation
pressure . It is therefore impor tant that low
a s pect ratio tire s are inflated to the specified
pressure and that the inflation pre ssure is
regularly checked and maintained. Ti re pres­
sures should be checked at least once a
month and always before a long trip
c::> page 234, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
eas ily by impact with potho les, curbs, gu llies
Tire s an d wheel s 245
or r idges on the road, partic ularly if the tire is
u nderinflated.
In orde r to minimize t he occ urren ce of impact
dam age to the tires o f your vehi cle, we recom ­
mend that you observe the following p reca u­
tions:
- Always ma int ain re commended inflation
pressu res . Check your tire pressu re eve ry
2,000 miles ( 3,000 km) and add air if neces ­
sary.
- Dr ive ca re fu lly on roads with potholes, deep
gullies o r 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, immed iate ly inspect your
tires or have them inspected by the nearest
au thor ized Audi dealer. Replace a damaged
tire as soon as possible .
- Inspect your tires every 2,000 m iles (3,000
km) for damage and wear. Damage is no t al­
ways easy to see . Damage can lead to loss of
air a nd under inflat ion, which could eventu­
ally cause tire failure .
If you believe that a
t ire may have been damaged, rep lace the
t ire as soon as possib le.
- These tires may wear more quickly tha n oth­
ers.
- Please also remember that, while these tires
de live r respon sive handling, they may ride
less comfo rtably and m ake more noise tha n
other choi ces .
Reduced performance in winter /cold
season conditions
A ll ti res are designed for cer ta in p urposes.
T he low aspect ratio, ult ra h igh performance
tires originally installed on your vehicle are i n­
tended for maxim um dry and wet road per­
f ormance and handling. They are not suitable
for cold , snowy or icy weather condi tions. If
you drive under those circumstances, you
shou ld equ ip your vehicle w it h all -season or
winter tires, which offer bette r traction under
those conditions. We suggest you use the rec­
ommended snow o r all-season t ires specified
f o r yo ur vehicle , or t hei r equivalent . .,..
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