wheel bolt torque AUDI Q7 2014 Owner´s Manual

29 0 T ire 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 .
- If the Adaptive Air Suspension* should
malfunction, do not mount or use snow
chains because the vehicle will be ex­
tremely low. If you do dr ive with snow
chains on while the vehicle is at this lev­
el, the snow chains might severely dam­
age the wheelhouse and other parts of
the veh icle.
(!) Tips
Where snow cha ins are mandatory oncer­
tain roads, this normally also applies to
veh icles with all-whee l dr ive.
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 different rims are fit ­
ted, the correct wheel bolts with the r ight
l ength and correctly shaped bolt heads must
be used. This ensures t hat wheels a re fitted
secure ly and that the brake system f unctions
correctly .
I n ce rtain circumstances, you may not use
wheel bolts from a different vehicle -even if it
is the same mode l
<=?page 318.
.&_ WARNING
Improperly tightened o r maintained wheel
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 w hile driving if greased or
oiled, even if tightened to the specified
torque. -
On ly use wheel bolts that be long to the
rim being installed .
- Never use different wheels bolts on yo ur
veh icle.
- Always maintain the correct tightening
torque for the whee l bolts to reduce the
risk of a whee l loss. If the tightening tor ­
que of the wheel bolts is too low, they
can loosen and come out when the vehi­
cle is mov ing. If the tightening torque is
too high, the wheel bolts a nd threads
can be damaged and the whee l can be­
come loose.
(D Note
The specified torque for the wheel bolts is 120 ft lb ( 160 Nm) with a to le rance of
± 7,4 ft lb( ± 10 Nm) . T orque wheel bolts
diagonally. After changi ng a wheel, the
torque m ust be che cked as soon as possi­
ble with a to rque wrenc h - preferab ly by an
a uthorized Audi dea le r or q ualified work­
shop.
Low aspect ratio tires
Your Audi is factory-equipped w ith low aspect
ratio tires. These tires have been tho roughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and hand ling under a variety of d riving condi­
tions . As k your au thor ized A udi dealer for
more de tails .
T he low aspect ratio of these t ires is ind icated
by a numera l of
55 or l ess in the tire's s ize
designation. The n umeral rep resen ts the ratio
of the tire's s idewa ll height in relation to its
tread width exp ressed in percentage . Conven ­
t iona l tires have a he ight/width ratio of 60 or
more.
The performan ce of l ow-a spect-r atio tire s is
particularl y sen sitive to imp roper inflation
pre ssure. It is therefo re important that low
a spect ratio tires are inflated to the specified
pressure and th at the inflation pressure is
regularly checked and mainta ined. Tire pres -
s u res should be checked at least onc e a ..,.

2 98 What do I do now ?
After changing a wheel
A wheel change is no t complete without do­
ing the following .
"'Always store the vehicle tool kit, the jack
and the replaced ti re i n the luggage com­
partment
¢ page 170.
"'As soon as possible, have the tightening
torques
on a ll wheel bo lts ch ecked with a
tor que wrench. The correct tigh ten ing tor­
que is 120
ft lb (160 N m).
"' Have the flat tire
replaced as soon as poss i­
b le.
@ Tips
- I f yo u notice t hat the wheel bolts are
corroded and difficult to turn w hile
changing a t ire, they should be re p laced
b ef ore yo u check the tighten ing torque.
- Drive at red uced s peed unti l y o u have the
t ig htening torq ues chec ked.
Decorative wheel covers
App lies to vehicles: with decorative wheel covers
The decorative wheel covers must be removed
first to access the wheel bolts.
Fig . 260 C han ging a w hee l: R em ovin g the whee l cove r
Removing
"'Insert the hook provided with the ve hicle
tool kit in the hole in t he hub.
"' Pull off the
decorat ive wheel cover
c:> fig . 260 .
' 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
s crewed .
Fig. 261 Chang ing a w heel: re m ov ing th e w hee l b o lt
caps
Removing
"' Push t he plastic clip provided with the ve hi­
cle tool kit over the w heel bo lt cap until it
engages .
"' Pull on th e
plastic clip to remove t he cap
c:> fig. 261 .
Refitting
"' Place t he caps over the whee l b olts and
push them back o n.
The caps are to protect and keep the wh eel
bolts clean.
Loosening and tightening the wheel
bolts
The wheel bolts mus t be loosened before rais­
ing the v ehicle .
Fig. 26 2 Cha ng ing a w hee l: loosening th e w hee l bo lts II--

(D Note
When removing or installing the wheel,
the rim could hit the bra ke rotor and dam­
age the rotor . Wor k carefully and have a
second person help you.
- W hen mounting tires with
unidirectional
tread design
ma ke s ure the tread pat­
tern is pointed the r ight way
<=> page 301.
-The wheel bolts should be clea n and easy
to tu rn . Check for d irt and corrosio n on
t h e mat ing su rfaces of both the whee l
and the hub. Remove a ll dirt from these
su rfaces before remo untin g t he wheel.
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tr ead pattern point ed in
the right dire ction.
Using a spare tire with a tread pattern
intended for use in a specific direction
W hen using a spa re tire w ith a t read patte rn
in te nded fo r use in a specific direction, p lease
n ot e t he followi ng:
- 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 di rection, use the spa re tire only
tem porarily si nce th e tir e will not be able to
a ch ieve i ts op timum pe rfo rm ance chara cter­
is tics with reg ard to aq uaplani ng, noise and
wea r.
- W e recommend that you p ay pa rticular at­
tent io n t o this fact du ring wet weathe r and
t h at you adjus t your spee d to matc h roa d
con dit ions .
- Re place the fla t tire w ith a new one and
have it installed on your vehicle as soon as
poss ible to restore the hand ling advantages
of a unid irect iona l tire.
What do I do now?
Notes on wheel changing
P lease read t he i nfo rmat ion c:> page 284, New
t ires and replacing tires and wheels
if y ou a r e
go ing to use a sp are tire w hich is different
from the ti res on yo ur vehicle.
After yo u cha nge a tire:
- Check the tire pressure on the spare imme­
diately after installation .
- Have the wheel bolt tightening torque
che cked 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 120 ft lb (160 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.
- Repla ce the flat tire with a new one and
have it installed on your vehicle as s oon as
possible. Remount the wheel cover.
Until then, drive with extra care and at re­
duced speeds .
&_ WARNING
-
- If yo u are goi ng to e quip yo u r ve hicl e
wit h tires o r rims whi ch di ffer from those
which were fac to ry installed, t hen be
sure to rea d the information
c:> page 284,
New tires and replacing tires and
wheels.
- Always make s ure the damaged wheel o r
even a flat tire and the jack and t ool kit
are prope rly secured in the luggage com ­
pa rtme nt and are not loose in the pas ­
senge r compartment .
- In an accident or sudden maneuver they
could fly forwa rd, inj uri ng a nyo ne in the
veh icle.
- Always sto re damaged wheel , jack a nd
too ls sec urely in the luggage compa rt ­
men t. Othe rwise, in a n accide nt o r sud­
de n m aneuver they could fly forwa rd,
c a u sing i nju ry to passenger s in th e ve hi­
cle.
301
•
•

334 Index
Tread Wear Indicator (TWI) . ... .. .... . 283
Trip computer Fuel consumption . . . . . . . . . . . . . . . . . . 24
M ileage .... ............. .. .. .. .. .. 24
Sing le -tr ip memory ....... .. .. .... .. 25
Total -t rip memo ry . . . . . . . . . . . . . . . . . . 25
Trip odometer .............. ... .. ... . 12
What does it mean whe n dEF appears in
the t rip odomete r d isplay? . .. .. .... .. 12
Trunk
refer to Rear lid . . . . . . . . . . . . . . . . 45, 46
T u rn ing rear air conditioning on/off
Four -z one automatic comfort a ir condi-
tioning ...... ........... .. .. .... .. 99
T u rn signa ls . ... . .. ..... ... .. .. .... .. 60
Warning/indicator lights ... .. .. .... . . 16
u
Unfasten ing sa fe ty be lts
Unid irect iona l tires .......... ... .. .. .
Uniform ti re quality g rading ... .... .. .
Un lo ck ing 180
273
287
P owe r locking sw itch .... .. .. .. .. .. . . 44
Rear lid/trunk l id ......... .... .... .. 45
Remote control key . . . . . . . . . . . . . . . . . 4 3
Using the key . . . . . . . . . . . . . . . . . . . . . . 43
V
Va let key function
Activa ting and deactivating ... ... ... .. 41
Vanity m irror . . . . . . . . . . . . . . . . . . . . . . . . 62
Vehicle Care/clean ing ............ .. .. .... . 244
Vehicle ident ificat ion labe l ... .. .. .. .. . 3 13
Vehicle Identification N umber (VIN) ... . 313
Vehicle jack . . . . . . . . . . . . . . . . . . . 294, 299
Vehi cle liter ature . . . . . . . . . . . . . . . . . . . . . 5
Vehicle shut-down .......... ... .. .. . 234
Vent ilation
Climate controls . . . . . . . . . . . . . . . . . . . . 92
V in yl
C le a ning ... ... .......... .. .. .. .. . 247
w
Warning/ind ica tor lights . ..... .... . .. . 10
Adaptive Air Suspension . . . . . . . . . . . . . 17
Adaptive cruise control . ..... ... .. .. 121
Airbag system .................... . 16
Anti- lock brake system (ABS) . . . . . . . . . 18
Brake system ...... .... .... ... .. .. . 19
Cruise contro l . . . . . . . . . . . . . . . . . . . . . . 18
E lectronic power cont rol ... ...... ... . 15
El ectronic Stab ilization Contro l (ESC) .. . 16
G low p lug sys tem ............. .... . 15
Hig h beam .. .. .. ... .......... .. .. . 18
Malfunction Ind icator Lamp (M IL) .. .. . 17
Pa rking brake .... .. .... .... ... .. .. . 19
Safety be lt . . . . . . . . . . . . . . . . . . . . . . . . 18
Tire pressure monitoring system . . . . . . 18
Trail er turn s ignal assembly ... .. .... . 17
Turn signals ... .. ... .. .. ... ..... .. . 16
Warning lights . . . . . . . . . . . . . . . . . . . . . . 14
Wa rranty coverages .... ... ...... .. .. 316
Washer reservo ir .... ........... .. .. 272
Wea r indica to r .. .. .. .... .... ... .. .. 28 3
We ights ....... ... ................ . 313
What happens if yo u wear your safety belt
too loose? .. .... .. ............. .... 179
Wh at happens to unbelted o ccupants? .. 176
What impai rs driving safety? ....... ... 16S
What shou ld I do after changing a
whee l? . .... .... .. ................. 280
Wh at shou ld I do afte r repla cing whee ls? 280
Wheel bolts Torque ....... ... ................ . 290
Wheels . ... .... .. ... .. ..... .... . .. 273
Checking t ire pressure .......... .. .. 279
Cleaning .. .... .. ... .......... .... 246
Co ld tire inflation pressure .. ... ... .. 277
General notes .. .. .......... ...... . 273
G lossary of tire and loading terminolo-
gy ... .. .. .. .. .. ............... .. 274
New t ires and whee ls ........... .... 28 4
T ires and veh icle loa d limits ..... .... 281
When must a safety be lt be replaced? .. 177
When m ust the airbag system be inspect -
ed? .... .... .... .. ................. 194
When should I adjus t the tire pressures? 280
When should I check the tire press ures? . 280