2015 AUDI RS7 SPORTBACK wheel bolt torque

254 Tire s and wheel s
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the
factory installed rims. If different rims are fit­
ted, the correct wheel bolts with the r ight
length and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
secure ly and that the brake system funct ions
correctly .
In ce rtain circumstances, you may not use
wheel bolts from a different vehicle -even if it
i s the same mode l
~page 284.
_& WARNING
Improperly tig htened o r maintained whee l
bolts can become loose ca using loss of
contro l, a co llision and serious persona l in­
jury.
- Always keep the wheel 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 bo lts and
the threads in the wheel hubs. They can
become loose while driving if greased or
oiled, even if tightened to the specif ied
torque.
- Only use wheel bolts that belong to the
rim being installed.
- Never use different wheels bolts on your
vehicle.
-Always maintain the correct tighten ing
torque for the wheel bo lts 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 veh i­
cle is moving. If the tightening torque is
too high, the whee l bolts and threads
can be damaged and the wheel can be­
come loose.
@ Note
The spec ified torque fo r 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 diago- nally
. After changing a whee l, the torque
must be checked as soon as possible with a
torque wrench -preferably by an author­
i zed Audi dealer or qualified workshop.
Low aspect ratio tires
Your Audi is factory-equ ipped w ith low aspect
ratio tires . These tires have been thoroughly
tested and been selected specifically fo r your
model for their superb perfo rmance, road fee l
and hand ling under a variety of d riving cond i­
tions . As k your au thor ized A udi dealer for
more details .
T he low aspect ratio of these tires is ind icated
by a numera l of
55 or less in the tire's s ize
designation. The numera l represen ts the ratio
of the tire's sidewall height in relation to its
tread width expressed in percentage . Conven­
tiona l tires have a height/width ratio of 60 or
more.
The perf orm ance of low- aspect-r atio tire s is
p ar ticu larly s ensitive to improper infl ati on
press ure . It is t here fore im portant that low
as pect rat io tires are infl ated to the spe cified
pre ssure and that the infl ation pressu re is
r e gularl y che ck e d and mainta in ed. Tire pre s­
su res should b e check ed at least onc e a
month and alwa ys bef ore a long trip
~page 237, 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 it h potholes, curbs, gull ies
o r r idges on the road, pa rticularly if the tire is
u nderinfla ted .
In order to minimize the occurrence of impact
damage to the tires of you r vehicle, we recom­
mend that you observe the follow ing p recau­
tions:
- Always ma inta in recommended inflation
pressures. Check your tire pressure eve ry
2,000 miles (3,000 km) and add air if neces­
sary .
- Dr ive carefully on roads with potholes, deep
gullies o r ridges. The impact from dr iv ing ..,.

26 4 What do I do n ow ?
11. Deactivate the vehicle jack mode* in the
MMI:
! CARI funct ion button> (Ca r)* sys ­
tems
control button > S er vicing & checks
> A ir su sp. : ja ck mode > Off.
The vehicle jack mode* switches off automati­
cally at speeds above 6 mph (10 km/h).
A WARNING
Always read and follow all WARNINGS and information
Q A in Raising the vehicle on
page 266
and Q page 268 .
After changing a wheel
A wheel change is not complete without the
doing the following.
• Always store the vehicle tool kit, the jack *
and the replaced tire in the luggage com­
partment
Q page 126.
• As soon as possible, have the tighten ing
torques
on all wheel bolts checked with a
torque wrench . The correct tightening tor ­
que is 90 ft lb ( 120 Nm) .
• Have the flat tire
re pl ac ed as soo n as poss i­
ble .
@ Tips
- If you notice that the wheel bolts are
corroded and difficult to t urn w hile
changing a t ire, they should be replaced
before yo u check the tighten ing torque .
- Drive at reduced speed unt il you have the
tightening torques checked.
- After changing a wheel, t he tire pressure
i n a ll four tires must be checked/cor re ct­
ed and the tire pressure mon itoring indi­
cator must be stored in the MM I
¢page 257.
' Wheels with wheel bolt caps
Applies to vehicles: with wheel bolts with caps
The caps must be removed first from the
wheel bolts before the bolts can be un­
screwed .
Fig. 208 Cha nging a whee l: removing t he wheel bo lt
c aps
Removing
.. Push the
pla st ic clip (prov ided with the veh i­
cle tool kit) over the wheel bo lt cap until the
inner retainers on the clip align w ith the
edge of the cover.
• Remove the cap with the
pl as tic clip (vehicle
too l kit)
~ fig. 208.
Refitting
.. Place the caps over the whee l bolts and
push them back on.
The caps are to protect and keep the wheel bolts clean.
Loosening and tightening the wheel
bolts
The wheel bolts must be loosened before rais­
ing the vehicle.
F ig . 209 Chang ing a whee l: loosening t he w hee l bolts .,.

268 What do I do now?
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in the right direction .
Using a replacement tire with a tread
pattern intended for use in a specific
direction
When using a re p la cemen t tir e wi th a tread
pattern inte nded for use in a speci fic dire c­
tion, please note the fo llow ing :
- T he direction of rotation is marked by a n ar­
row on the side o f the tire .
-If the r eplacement tire has to b e insta lled in
t h e inc orre ct direction, use the rep la ce m ent
tir e on ly tempor arily s ince the t ire will not
be able to a chieve its op timum perfo rm ance
characteris tics with regard to aqua planing,
noise and wear .
- W e recommend that you pay particular a t­
tent io n to this fact du ring wet weat her and
t h at you adjust your spee d to matc h roa d
condit ions .
- Repl ace the flat tire w ith a new one and
have it installed on your veh icle as soon as
poss ible to resto re the handling advantages
of a unid irect iona l tire .
Notes on wheel changing
Please read the information 9 pag e 245, New
tires and replacing tires and wheels
i f you are
go ing to use a rep lacemen t tire w hich is dif­
feren t fro m th e tires on you r veh icle.
After you cha nge a t ire :
-Check the t ire pressure on the replacement
tire immediately after installation.
- Have the wheel bolt tightening torque
checked with a torque wrench as soon as
possible by your authorized Audi dealer or
a qualified service station .
- With steel and alloy wheel rims , the wheel
bolts are correctly tightened at a torque of
90 ft lb (120 Nm) .
- If you notice that the wheel bolts are cor­
roded and difficult to turn while changing a tire
, they should be replaced before you
check the tightening torque.
- Replace the flat tire with a new one and
have it installed on your vehicle as soon a s
possible. Remount the wheel cover.
Until then , drive with extra care and at re­
duced speeds.
A WARNING
- If yo u are going to e quip your ve hicl e
wit h tires or rims which differ from those
which were factory installed, then be sure to read the information
9 page 245,
New tires and replacing tires and
wheels .
-Always make sure the damaged wheel o r
even a flat tire a nd the jack a nd tool kit
ar e prope rly secu red in the luggage com ­
pa rtment an d are no t loose in the pas ­
s e nge r compa rtm en t.
- In an accid ent or sudde n man euver they
co uld f ly forw ard, inju ring anyo ne in the
ve hicl e.
- Always s to re damaged wh eel, jack a nd
t oo ls se curely in the luggage co mpa rt­
men t. Ot he rwi se, in an a ccident or sud­
d en maneuve r they co uld f ly forw ard,
causing inj ury to p assen gers in the ve hi­
cle.
(D Note
Do not use comm erc ia lly availabl e tire
se alant s. Oth erwise, the e lec trical co mpo­
nen ts of the tire press ure moni to ring sys ­
tem will no longer work p rope rly a nd t he
senso r fo r the tire pressure mon itor ing
system w ill have to be rep lace d by quali ­
fied workshop.

M N
0:: <.J 'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
w
Warning/indicator lights . ... .. .. .. .. .. 11
Airbag system . .. ..... ... .. .. .. .. .. 1 8
Ant i-lock braking system (ABS) . ... .. .. 18
Brake system ............ .... .. .... 14
Cruise control . . . . . . . . . . . . . . . . . . . . . . 22
Electromechan ical park ing brake ...... 15
Electronic power control . .. ... .. ... .. 19
Elect ronic Stabilization Control (ESC) . . . 18
Ge ne rato r .. .... ......... .. .. .. .... 16
I ns trumen t cluste r ........ .. .. .. .. .. 10
M alfu nct io n I ndica to r Lamp (M IL) . .. .. 20
Safety belt ... .... .... ... .. .. .. .... 1 6
Turn signa ls . .... ..... ... .. .. .. .... 22
War ning/Ind icator lights
A irbag system . . . . . . . . . . . . . . . 15 1, 15 2
P ASSENG ER AIR BAG O FF .. .. .. .. .. . 152
Warranty coverages ........... .... .. 282
Washer reservoir .. ..... ... .. .. .. .. . 224
Wear ind icator ............ .. .. .. .. . 24 3
Weights ... .. .. .. ......... .. .. .. ... 279
What happens if you wear yo ur sa fety be lt
too loose? ... .. .... .... ... .. .. .. ... 134
What happens to unbelted occupants? . . 13 1
What impairs driving safety? . .. .. .. .. . 121
What should I do after chang ing a
wheel? . ..... .. .. .. .... ... .. .. .. ... 239
What should I do after rep lacing wheels? 239
Wheel bolts Torque ... .. ............. .... .. ... 254
Wheels ..... .. ... ..... ... .. .. .. ... 226
C hec kin g tire pressure .. ... .. .. .. .. . 23 7
C leaning ... .. .... .... ... .. .. .. ... 202
Cold tire inflat ion pressure . .. .. .. .. . 233
General notes ............ .. .. .. .. . 226
Glossary of t ire and load ing termi nolo-
gy ...... ... ...... ............. .. 228
New tires and wheels ...... .. .. .. .. . 24 5
T ires and vehicle load lim its .. .. .. .. . 24 0
When must a safety belt be rep laced? . . 133
When must the airbag system be inspect-
ed? ... .. .. .. .. .. .. .. .... ... .. .. ... 151
When shou ld I ad just the tire p ressu res? 239
When shou ld I check the tire pressures? . 239
Where are lower anchor ages located? .. . 180
Inde x 297
Where can I find the t ire pressures for my
ca r? .. ... .. .. .. .... .. .. ...... ... .. 237
Why safety belts? . . . . . . . . . . . . . . 130, 131
Windows Cleaning/removing ice . .. .... ... .. .. 203
defrosting (automatic climate control) 71
Windshie ld
Cleaning .. .. .. .. .... ............. . 48
defrosting (automatic climate control) . 71
Windshie ld washer system .... ... .. .. . 48
Washer fl uid leve l .. . .. .. ..... ... .. . 20
Washe r reservo ir ... . .. .. ..... ... .. 224
Windsh ie ld w ipers
Cleaning .. .. .. .. .. .. ........... .. . 49
F olding up . ... .. .. .. ... ..... ... .. . 49
Ind icator lig ht ... ... .. .. ..... ... .. . 21
Replacing windshield wiper b la d es . ... . 49
Switching on/off . ............. .... . 48
Win ter operation
B attery ... .. .. .. .. . .. ... .... ... .. 2 21
Car washes . ... .... . ... ...... ... .. 201
Cooling system . . . . . . . . . . . . . . . . . . . . 217
Defrost ing windows (automatic climate
control) ... .. .. .. .. .. ........... .. . 71
Removing ice from windows ......... 203
Seat heating (automat ic climate control) 71
Steering w heel heat ing . .. .. ... ... .. . 72
T ires ........ ... .. ............... 193
Winter tires . .. .. .. ... ............ .. 252
All-wheel drive . .. ............. .... 252
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