2012 AUDI A5 COUPE wheel bolt torque

Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the
factory installed r ims. If differen t 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 fitted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bo lts from a different vehicle -eve n if it
i s the same model
¢ page 295.
_&. WARNING
Improperly tig htened or 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
whee l 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 wh ile driving if greased or
o iled, even if tightened to the specif ied
torque .
- Only use wheel bolts that belong to the
rim being installed.
- Never use different whee ls 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 vehi­
cl e 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.
Q;) Note
The spec ified torque fo r the wheel bo lts is
90 ft lbs. (120 Nm) with a tolerance of
± 7,4 ft lbs.(± 10 Nm). Torque wheel bo lts
Tire s an d wheel s 269
diagonally. After changing a wheel, the
torque m ust be checked as soon as possi­
ble with a torque wrench -preferably by an
a uthori zed Audi dea ler or qualified work­
shop.
Low aspect ratio tires
Your Aud i is factory -equ ipped w ith low aspect
ratio tires . These tires have been tho roughly
tested and been se lected specifically fo r your
model for their superb perfo rmance, road fee l
and hand ling under a var iety o f driving cond i­
tions. Ask your authorized Audi dealer for
more details .
T he low aspect ratio of these t ires is ind icated
by a numeral of
55 or l ess in the tire's s ize
designation. The numera l rep resents the ra tio
of the tire's sidewa ll height in relation to its
tread width expressed in percentage . Conven­
tiona l tires have a he ight/w idth ratio of 60 or
more.
T he performance of low-a spe ct- ra tio tire s is
p ar tic ul ar ly se nsi tiv e to i mprop er i nfl ation
pre ssure. It is the refo re important that low
a spect ratio t ires are inflated to the specified
pr ess ure and that th e inflation pr essur e is
r e gula rly ch ecked and maintain ed. Tir e pre s­
s ure s should b e check ed at l east once a
m onth and alwa ys befo re a long trip
¢ page 258, Checking tire pressure.
What you c an do to avo id tire and rim
damage
Low aspect ratio tires can be damaged mo re
easily by impact w ith potholes, curbs, g ull ies
o r ridges on the road, pa rticularly if the tire is
u nderinflated.
In orde r to minimize the occurrence of impact
damage to the tires of your vehicle, we recom ­
mend that you observe the following p reca u­
tions:
- Always ma inta in recommended inflation
pressu res. Check your tire pressure eve ry
2,000 miles (3,000 km) and add air if neces-
sary . .., •
•

A WARNING ,~ -
You or your passengers could be injured
while changing a wheel if you do not fol­
low these safety precautions:
- If you have a flat tire, move a safe dis­
tance off the road. Turn off the engine,
turn the emergency flashers on and use
other warning devices to alert other mo­
torists.
- Make sure that passengers wait in a safe
place away from the vehicle and well
away from the road and traffic.
- To help prevent the vehicle from moving
suddenly and possibly slipping off the
jack, always fully set the parking brake
and block the wheel diagonally opposite
the wheel being changed with the fold­
ing chocks or other objects. When one
front wheel is lifted off the ground, plac­
ing the Automatic Transmission in "P"
(Park) will
not prevent the vehicle from
moving .
- Before you change a wheel, be sure the
ground is level and firm. If necessary,
use a sturdy board under the jack.
- After installing the inflatable spare tire,
make sure that you replace the flat tire/
wheel in its storage area properly and
tighten the knurled retaining screw se­
curely.
0 Note
If you are changing the wheel on a steep
incline, use a rock or similar object to
block the opposite wheel to prevent the
vehicle from moving.
(D Tips
Obey all laws.
Changing a wheel
When you change a wheel, follow these ­
quence described below step-by-step and in
exactly that order .
1. Remove the decorative wheel cover* or
the
wheel bolt caps* . For more details see
What do I do now? 275
also ~ page 2 76, Decorative wheel cov­
ers
or ¢ page 2 76, Wheels with wheel
bolt caps.
2. Loosen the wheel bolts ¢ page 276.
3. Locate the proper mounting point for the
jack and align the jack below that point
¢page 277 .
4.
Lift the car with the jack ¢ page 2 77.
5. Remove the
wheel with the flat tire and
then install the
spare tire ¢page 278.
6. Tighten all wheel bolts lightly.
7.
Lower the vehicle with the jack.
8. Use the wheel bolt wrench and
firmly
tighten all wheel bolts in a crisscross pat­
tern ¢
page 2 76.
9. Replace the
decorative wheel cover* or
the
wheel bolt caps* .
A WARNING
Always read and follow all WARNINGS and
information ~.&.
in Raising the vehicle on
page
277 and ¢page 279.
After changing a wheel
A wheel change is not complete without the
doing the following.
"' Store and secure the wheel you replaced in
the spare wheel well.
"' Replace the tools and the jack in their prop­
er location.
"' Check the
tire pressure of the spare tire as
soon as possible.
"' As soon as possible, have the
tightening
torques
on all wheel bolts checked with a
torque wrench. The correct tightening tor­
que is 90 ft lbs. (120 Nm).
"' Have the flat tire
replaced as soon as possi­
ble.
(D Tips
- If you notice that the wheel bolts are
corroded and difficult to turn while
changing a tire, they should be replaced
before you check the tightening torque .
- Drive at reduced speed until you have the
tightening torques checked. •
•

Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in
the right direction.
Using a spare tire with a tread pattern
intended for use in a specific direction
When using a spare tire w ith a tread pattern
in tended for use in a specific direction, please
note the following:
- The direction of rotation is marked by an
ar­
row on the side of the tire .
-If the spare t ire has to be installed in the in­
correct direction, use the spare tire only
temporarily since the tire will not be able to
achieve its optimum performance character­
istic s with rega rd to aquaplaning, noise and
wear.
- We recommend that you pay particular at­
tention to this fact during wet weather and
that you adjust your speed to match road
conditions.
- Replace the flat tire with a new one and
have it installed on your veh icle as soon as
possib le to restore the handling advantages
of a unid irectiona l tire .
Notes on wheel changing
Please read the information c:> page 263, New
tires and replacing tires and wheels
i f you are
going to use a spare t ire which is different
from the tires on your veh icle.
After you change a tire :
-Check the tire pressure on the spare imme­
diately 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 workshop.
- With steel and alloy wheel rims, the wheel
bolts are correctly tightened at a torque of
90 ft lbs . (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. What do I do now? 2 79
- Replace the flat tire with a new one and
have it installed on your vehicle as soon as
possible. Remount the wheel cover.
Until then , drive with extra care and at re­
duced speeds.
A WARNING
-
- If you are going to equ ip your vehicle
with tires or rims which differ from those
which were factory installed, then be
sure to read the information
c:> page 263,
New tires and replacing tires and
wheels.
- Always make sure the damaged wheel or
even a flat tire and the jack and tool kit
are properly secured in the luggage com­
pa rtment and are not loose in the pas­
senger compartment.
- In an accident or sudden maneuver they
could fly forward, injuring anyone in the
veh icle.
- Always store damaged wheel, jack and
tools securely in the luggage compa rt­
ment. Otherwise, in an accident or su d­
den maneuver they could fly forward,
causing injury to passengers in the vehi­
cle.
([) Note
Do not use commercially available tire
sea lants. Otherwise, the electrica l compo­
nents of the tire pressure monitoring sys­
tem* wi ll no longer work properly and the
sensor for the tire pressure monitoring
system* will have to be replaced by a
qualified workshop . •
•

310 Index
V
Valet parking .. .. .......... .. .. .... .. 47
Vanity mirror . . . . . . . . . . . . . . . . . . . . . . . . 54
Vehicle-care products ....... .. .. .. .. . 221
Vehicle Identification Number (VIN) .... 290
Vehicle jack .... ... .... .... .. .. .. .. . 277
Vehicle literature . . . . . . . . . . . . . . . . . . . . . 5
Vehicle tool kit ....... ..... .. .. .. .. .
273
Ventilation
Deluxe automatic climate control . . . . . .
79
De luxe automatic climate control plus . . 83
w
Warning/indicator lights .... .. .. .... .. 10
Adaptive cruise control . . . . . . . . . . . . . 108
Airbag system .. .. .... ... .. .. .. .. .. 15
Anti-lock brake system (ABS) ... .. .. . . 16
Brake system . . . . . . . . . . . . . . . . . . . . . . 18
Cruise control ................ .... .. 16
El ectrom echanical parking brake ...... 17
El ectronic power control ... .. .. .. .. . . 15
Elect ronic stabilization program (ESP) .. 15
High beam .. .. .......... .. .. .... .. 16
Malfunction Indicator Lamp (MIL) .....
16
Safety belt .............. .. .. .... .. 16
Tire pressure monitoring system .. .... 16
Turn signals .. .. .. .... ... .. .. .. .. .. 16
Warning lights .. .......... .. .. .... .. 13
Warranty coverages ...... .. .. .. .... . 293
Washer reservoir .............. .... . 251
Washing .... ... .......... .. .. .... . 221
Automatic car wash ........... .... . 222
by hand .... ... .......... .. .. .... . 222
General information .............. . 221
with a power washer ...... .... ..... 223
Waxing ..... ... .......... .. .. .... . 223
Wear indicato r ... ...... .... ... .. .. . 262
Weights . ................. .... ..... 290
What happens if you wear your safety belt
too loose? ... ... .......... .. .. .... .
158
What happens to unbelted occupants? .. 155
What impairs driving sa fety? . . . . . . . . . . 145
What should I do after changing a
wheel? .. .... ............... .. .. .. .
259
What should I do after replacing wheels? 259
Wheel bolts
Torque . ... .... .. .. ... ........ .. ..
269
Wheels .... .... ............... .... 252
Cast alloy . .. .. .. ............. .. .. 225
Ch ecking tire pressure .............. 258
Cold tire inflation pressure .......... 256
General notes .... ... .......... .. .. 252
G lossary of tire and loading terminolo-
gy ....... .... .. .. ........... ....
253
New tire s and wheels ............. .. 263
Tires and vehicle load limits ... .. .. .. 260
When must a safety belt be replaced? . . 157
When must the airbag system be inspect-
ed? .... .. .. .. .. .. .. ... ........ ....
173
When should I adjust the ti re pressures? 259
When should I check the tire pressures? . 259
Where can I find the tire pressures for my
car? ....... .... ............... ....
258
Why safety belts? . . . . . . . . . . . . . . 154, 155
Window regulators
Malfunctions .... ... .......... .. .. .
47
Power locks ... .. .. ........... .. .. . 46
Windows
Cleaning .. .. .. .. ............. .... 224
Windshield defogging/defrosting . . .
83, 88
Windshield washer fluid
Low level .. .. .. .. ............. .. .. .
35
Windshield wipers . ............... ... 55
Fau lty .... .... ................... .
36
Replacing windshield wiper blades .. .. . 56
Service position . . . . . . . . . . . . . . . . . . . . 56
Washer reservo ir .................. 251
Winter operation
Batt ery ... .... ............... ....
247
Coola nt system .. .. ........... .. .. 244
Defrosting windows . . . . . . . . . . . . . 82, 88
Front seat heating . ............ .. .. . 91
Tires ..... .... ............... .... 210
Windows . .. .. .. ............. .... 224
Winter tires ..... .. ... .......... .. .. 267
All-wheel drive ... .. ........... .. .. 267
Wiper blades
Replacing windshiel d wiper blades .... .
56
also refer to Windshield wip ers .. .. .. . 56