
248 Tire s and whee ls
- Never mount used tires on yo ur 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.
- If you notice unusual vibration or if the
vehicle pulls to one side when driving, al
ways stop as soon as it is safe to do so and check the wheels and tires for dam
age.
(D Note
Please note that summer and winter tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Acces sory weight
means the comb ined we ight (in excess of
those standard items which may be rep laced)
of au toma tic tra nsmission, power steer ing,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory -installed equip
ment (whether installed or not) .
Aspect ratio
means the ratio of the he ight to the w idth of
the tire in percent . Numbers of 55 or lower in
dicate a low sidewall for improved steering re
sponse and better overall handling on dry pavement .
Bead
means the part of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead s eparation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire . typica
l in those seasons. Audi recommends
using winter tires during the winter
months. Low temperatures signif icant ly
decrease the e lasticity of summer tires,
which affects tract ion and brak ing ability.
If summer tires are used in very cold tem peratures, cracks ca n form on the tread
bars, resulting in permanent tire damage
that can cause loud driving no ise and un
balanced t ires. Audi is not responsible for
th is type of damage .
Cold tire inflation pre ssure
means the t ire p ressure recommended by the
vehicle manufacturer fo r a tire of a des ignated
s ize that has not bee n driven for more than a
coup le of miles (k ilometers) at low speeds in
the three hour period before the tire pressure
is measured or adjusted.
Curb weight
means the we ight of a motor ve hicle w ith
standard equipment including the max imum
capacity of fuel, oil, and coolant, air condi
tioning and additional weight of optiona l
equipment.
Extra load tire
means a t ire design to operate at higher loads
and at h igher inflation pressures than the cor
responding standard tire . Extra load tires may
be identified as "XL", "x l" , "EXTRA LOAD", or
"RF" on the sidewall.
Gross A xle Weight Rating ("GAWR ")
means the lo ad -carry ing capacity of a s ingle
axle system , measured at the tire-ground in
terfaces.
Gr oss Vehicle Weight Rating ("GVWR ")
means the maximum total loaded we ight of
t h e vehi cle. .,.

264 Tire s and wheel s
driving a few yards and correct if neces
sary. Follow the instructions from the
snow cha in manufacturer when doing so.
(D Tips
Where snow chains are mandatory oncer
tain roads, this normally also applies to
veh icles with all-wheel dr ive .
Wheel bolts
Wheel bolts must always be tightened to the
correct torque.
The design of whee l bolts is matched to the
factory insta lled rims . If different rims are fit
ted, the correct wheel bolts with the right l ength and correctly shaped bolt heads must
be used. This ensures that wheels are f itted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bolts from a different vehicle -even if it
is the same model
¢ page 295.
.&_ WARNING
Improperly tig htened or maintained wheel
bolts can become loose ca using loss of
cont ro l, a co llision and serious p ersona l in
Jury.
- Always keep the wheel bolts and the
threads in t he wheel hubs clea n so the
wheel bolts can tu rn easily and be prop
erly tigh tened.
- N ever grease or oil the wheel bo lts and
the threads in the wheel h ubs. They can
become loose w hile d riving if greased or
oiled, even if tightened to the specified
torq ue.
- Only use wheel bolts that be long to the
rim being installed.
- N ever use different whee ls bolts on your
vehicle.
- Always mai nta in the co rrec t tighte ning
tor que fo r the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor
que of the wheel bo lts is too low, they
can loosen and come out when the veh i- cle is moving.
If the tightening torque is
too high, the wheel bolts and threads
can be damaged and the wheel can be
come loose.
(D Note
The specified torque for the whee l bolts is
105 ft lb (140 Nm) with a to lerance of
± 7,4 ft lb(± 10 Nm). Torque wheel bolts
diagonally . After changing a wheel, the
torque must be checked as soon as poss i
ble with a to rque wrench -preferab ly by an
a uthorized Aud i dea le r or qualified wor k
shop.
Low aspect ratio tires
Your A udi is factory -eq uipped w it h low aspect
ratio tires. These tires have been thoroughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and handling under a variety of driving condi
t ions . Ask your authorized Audi dealer for
more details .
The low aspect ratio of these tires is ind icated
by a numeral of
55 or less in the tire's s ize
designation . The numeral represents the ratio
of the tire's sidewall height in relation to its
t read width exp ressed in percentage. Conven
tiona l tires have a he ight/w idth rat io of 60 or
more.
Th e performanc e of low-a spect-ratio tire s is
pa rticularly sensi tive to improp er inflation
pre ssure. It i s ther efor e important that low
a spe ct ratio tir es are inflated to the spe cified
pre ssure and that the inflation pre ssure i s
regula rly checked and mainta ined. Tire pre s
sure s should be checked at lea st once a
month and al way s befo re a long trip
¢ page 2 53, Checking tire pressure.
What you can do to a void tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact w ith potholes, curbs, gul lies
or ridges on the road, particularly if the tire is
underinflated . ..,.

Tire repair
General information and safety
precautions
Appl ies to vehicles: with tire repair kit
The tire r epair is only m eant for tempo rary
use.
Fi g. 2 16 Tire damage, fo r which the tire repair kit is
not su itab le
Your veh icle is equipped with a tir e repair kit
(Tire Mob ility System) .
In the event of a flat tire, the tire repair kit is
found in the luggage compartment behind
the right side trim panel, and is made up of
tire sealant and a comp resso r
Q page 104,
fig. 112.
Only tire damage caused by fore ign objects up
to approximately 0.16 in
( 4 mm) in diameter
can be safely sealed with the tire repa ir k it .
The foreign object can stay in the t ire.
Th e tire sealant may not b e us ed :
- If the t ire has cuts or punctures that are
larger than 0 .16 in (4 mm)
Qfig. 216@.
-If the rim is damaged @.
-If you drove wi th very low t ire press ure o r
without a ir in the tire @.
Tire repair kit usage is descr ibed in
Perform
in g th e repair
Q page 2 72 and in the inst ruc
tions wi th the sea lant bottle.
The tire repair kit is able to be used at temper
atures as low as -4
°F ( -20 °().
A WARNING
Pay attention to t he fo llowing after repa ir
ing the t ire:
What do I d o now ? 271
-Do not dr ive faster than SO mph (80 km/
h).
- Avoid hard acce leration, braking s harply,
and fast cornering.
- The vehicle may become more diffic ult to
contro l.
- Tires sea led with the tire repai r kit are
only meant to be used
temporar ily .
Damaged tires must be rep laced .
- The tire repair kit may
NOT be used
- If the ti re has cuts or punctures that
are la rger than 0.16 in (4 mm).
- If the rim is damaged.
- If you drove with very low t ire pressure
or without air i n the tire.
- Obta in qua lified help if it is not poss ible
to perform the repair with the t ire seal
ant.
- The tire sea lant must not come in con
tact with skin, eyes, or clothes.
- If tire sea lant gets in your eyes or on
your skin, thoroughly rinse the affected
area immed iately w ith clean water .
- Change yo ur clothes immediately if they
get t ire sea lant on t hem.
- Do not inha le the fumes.
- If t he tire sealant is swa llowed, thor -
ough ly rinse out your mouth and drink
lots o f water.
- Do not induce vomiting . Seek medical at
tention immediately.
- If an a llergic reaction occurs , seek imme
diate medical attention.
- Keep the tire sealant away from children.
@ For the sake of the environment
Used sealant bottles may be retu rned to
your auth orized Audi dea le r for disposa l.
@ Tips
- If
sea lant has spilled out, let it dry and
then yo u can remove it by peeling it away
like a foil.
- Note the expi rat ion date on the sealant
bott le. Re pla ce the t ire sealant at an a u
t horize d Au di dealership.

300 Index
Center armrest
Adjusting . ................. ..... .. 66
Storage compartment . . . . . . . . . . . . . . . 66
Certification . . . . . . . . . . . . . . . . . . . . . . . 296
Changing A flat tire .. .......... ...... ... .. . 273
A wheel .. .. ................ ... ... 273
E ng ine oil ... ............ .. .. .. .. . 237
Checking Engine coolant level ....... .. .. .... . 239
Tire pressure .............. ... .. .. . 253
Child restraints Danger of using child restraints in the
front seat .... ........... .. .. .... . 158
System anchors .......... .. .. .. .. . 191
Where can I get additional information
about child restraints and their use? . . 196
Chi ld safety ................. .. .... . 178
Convertible locking retractor .. .. ..... 188
Important safety instructions for using
child safety seats ............. .. ... 181
Important things to know when dr iving
with chi ldren . ... ..... ... .. .. .. .. . 178
I nstalling a child restraint using the
L A T CH system . ......... .. .. .. .. .. . 193
Mounting and releasing the anchorage
hook .... ................ ... .... . 193
Tether anchors ............ ... .... . 194
Tether straps .............. .. .... . 194
Ch ild safety locks
Rear doors ............... ... .... .. 46
Child safety seats . .......... ... .. .. . 184
Booster seats ............. ... .. ... 186
Conve rtible child seats .... .. .. .. .. . 185
Conve rtible locking retractor .. .. .. .. . 188
Danger of using child restraints in the
front seat .. ................ ..... . 158
How do I properly install a child safety
seat in my vehicle? ........ .. .. .... . 181
Infant seats ............. .. .. .. .. . 184
Installing ................. .. .... . 188
LA TCH system ......... .... ... .. .. . 193
Lower anchorages ......... ... .. .. . 192
Safety instructions ... ..... .. .. .... . 181
Unused safety belts on the rear seat .. 183
Cigarette lighter ........... .. .. .. .. .. 75
C leaning .................... ..... . 217 Climate control
.... ............. ..... 79
Air vents . ..... .. .. .............. .. 81
Automatic recircu lation .......... ... . 81
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 80
Setup .... .... .. ............. .... . 81
Supplementary .. ................ .. 82
Synchronizing . ... ....... ...... .. .. . 81
Climatized cupholder ................. 74
Clock .. .. .. .... .. ............. ..... 12
Closing Panoramic sliding sunroof ........ ... . 47
Coat hooks ..... .. .. .............. .. 77
Cold tire inflation pressure .......... .. 251
Compass mirror . . . . . . . . . . . . . . . . . . . . . 59
Compliance ..... .. .. .............. . 296
Consumer Information . . . . . . . . . . 146, 293
Contacting NHTSA . ............... .. 146
Controls Cleaning .. .... .. .. .............. . 219
Convenience Closing ...... ... .. .............. .. 47
Open ing .. .... .. ............. .... . 47
Convenience key . .. ............. .... . 40
Indicator lights .. ..... ........... .. 87
Locking and unlocking vehicle ........ . 40
Start ing engine (START ENGINE STOP
button) ..... .. .. .. ........... .... . 86
Stopping the engine (START ENGINE
STOP button) .... ............... .. . 87
Switching on ignition ............ ... . 86
Convertible child safety seats . .. ... ... 185
Convertible locking retractor Activating . .... .. ............. .... 190
Deactivat ing . ... . ... ... .... ... .. .. 191
Using to secure a child safety seat 1.88, 190
Coolant system .... ................ . 238
Cooled cupholder ............... .... . 7 4
Cooling box in glove compartment . . . . . . 77
Cooling mode (climate control) ..... ... . 80
Cooling System Expansion tank ... ............. .... 239
Cornering light .. .. ............. .... . 51
Cruise control
Changing speed
Preselect speed .
. ................ .. 95
96
Switching off .. .. ............. .. .. . 96