2018 AUDI A8 wheel bolts

LL
"' .... N ,-.. N .... g :r st
use a spare tire* that is the same
circumference as the regular
tires.
&_ WARNING
-Only use tire/rim combina­ tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
-For technical reasons, it is not
possible to use tires from oth­
er vehicles
-in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif­
ferent construction can differ greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more
than six years old when abso-
Wheels
lutely necessary and drive
carefully when doing so .
-Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve­
hicle damage or accidents.
-If you install wheel covers on
the vehicle, make sure they al­ low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 265 T ir e profile: treadwear indica­
tor
Tire wear
Check the tires regularly for wear.
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear.
291

Wheels
the available cargo and lug­gage load capacity of your vehi­
cle.
.,.Check the tire sidewall
(¢ page 283, fig. 264) to deter­
mine the designated load rating
for a specific tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts must be clean and loosen/tighten
easily .
Rims
Rims with a bolted rim ring* or with bolted wheel
covers* consist of multiple pieces . These compo­
nents were bolted together using special bolts
and a special procedure. You must not repair or
disassemble
them £:=?.&. .
A WARNING
Wheel bolts that are tightened or repaired in­
correctly can become loose and result in loss
of vehicle control, which increases the risk of
an accident. For the correct tightening specifi­
cation, see
¢page 314.
- Always keep the wheel bolts and the
threads in the wheel hub clean and free of grease.
- Only use wheel bolts that fit the rim.
- Always have damaged rims repaired by an
authorized Audi dealer or authorized Audi
Service Facility. Never repair or disassemble
rims yourself, because this increases the risk
of an accident .
Winter tires
Winter tires significantly improve the vehicle's
handling when driving in winter conditions. Be­
cause of their construction (width, compound,
tread pattern) , summer tires provide less trac­
tion on ice and snow.
298
.. Use winter tires on all four wheels .
.. Only use winter tires that are approved for your
vehicle.
.. Please note that the maximum permitted
speed may be lower with winter
tires¢ _&.. An
authorized Audi dealer or authorized Audi Serv ­
ice Facility can inform you about the maximum
permitted speed for your tires .
.,. Check the tire pressure after installing wheels
¢page 293 .
The effectiveness of winter tires is reduced great­
ly when the tread is worn down to a depth of
0.157 in (4 mm). The characteristics of winter
tires also decrease greatly as the tire ages , re­
gardless of the remaining tread.
A WARNING
- Never drive faster than the maximum per­
mitted speed for your tires. This could cause
the tires to heat up too much. This increases
the risk of an accident because it can cause
the tire to burst .
- Always adapt your driving to the road and
traffic conditions. Drive carefully and reduce
your speed on icy or slippery roads. Even
winter tires can lose traction on black ice .
® For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear and fuel
consumption.
(D Tips
You can also use all season tires instead of
winter tires. Please note that in some coun­
tries where winter tires are required, only
winter tires with the
& symbol may be per­
mitted.
Snow chains
-
Snow chains not only improve the driving in win­
ter road conditions, but also the braking.
.,. Only install snow chains on the front wheels. .,.

Emergency assistance
Emergency assistance
General information
.,. Park the vehicle as far as possible from moving
traffic in the event of a breakdown. In the event
of a flat tire, park the vehicle on a level surface .
It you are on a steep hill, be especially careful.
.,. Set the parking brake .
.,. Switch the emergency flashers on .
.,. Set up the warning triangle r=;,page 312 .
.,. Have the passengers exit the vehicle . They
should move to a safe place, for example be­
hind a guard rail.
A WARNING
Follow the steps given above. This is for your
protection and the for the safety of other driv­
ers.
Equipment
Warning triangle
Applies to: vehicles with warning triangle
Fig. 270 L uggage co mpartm ent lid : w arnin g triangle
The warning triangle placed in the vehicle at the
factory is located in the luggage compartment.
.,. To remove the warning triangle, press the fas-
tener in the direction of the arrow and fold the
holder down.
The luggage compartment lid is only designed to
hold the warning triangle offered by the Audi
Genuine Accessories program.
312
Vehicle tool kit
Applies to: vehicles with vehicle toot kit
Fig. 271 Lu gg age compartment : cargo floor cove r folded
upward
Fig. 272 Luggage compartment: examp le of vehicle toot
kit and vehicle j ack
The vehicle tools and vehicle jack* are stored in
the luggage compartment under the floor cover .
.,. Lift the cargo floor by the plastic handle .
.,. Hook the handle into the luggage compartment
seal
r:;, fig. 2 71 .
.,. Turn the handwheel counter-clockwise and re ­
move it .
.,. Remove the spare tire* to access the vehicle
tool kit
~ fig. 271 .
Depending on the equipment , the veh icle tool kit
may be located under the spare tire, under an­
other cover or in the tool box.
The position of the vehicle jack* may vary .
A WARNING
Improper use of the veh icle jack can cause se­
rious personal injuries.
-Never use the screw driver hex head to
tighten wheel bolts, since the bolts cannot
attain the necessary tightening torque if you
..,.

u. co .... N
" N .... 0 0 :c ' use the hex head, potentially causing an ac­
c ident.
- The factory-supplied jack is intended on ly
for your vehicle m odel. Under no circum­
stances should it be used to lift heavy
vehicles or other loads; you r isk injuring
yourself .
- Never start the en gine when the vehicle is
ra ised, which could cause an accident .
- Support the veh icle secure ly w ith appropr i­
ate stands if work is to be performed under­
neath the vehicle; otherwise, there is a po ­
tent ial risk for in ju ry .
- Never use the jack supplied with your Audi
on another vehicle, particularly on a heav ier
one . The jack is only suitable for use on the
vehicle it came w it h .
(D Tips
The vehicle jack* in your vehicle is mainte­
na nee -free .
Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger's safety when changing a
wheel.
.,. After yo u experience a tire fail ure, pull the car
we ll away from moving t raffic and t ry to rea ch
level g round before you s top ¢&, .
.,. All passengers sho uld lea ve the ca r and move
to a saf e location (for instance, be hind t he
guardrai l) ¢ &, .
.,. Engage the parking brake to prevent you r vehi­
cle from rol ling
unintentionally ¢ A_.
.,. Move selector lever to position P ¢ A_.
.,. If you a re towing a trailer, unh itch the trailer
from your ve hicle.
.,. Take the jack and the spare tire ou t of the lug­
gage compa rtment
¢ page 312.
A WARNING
You or your passengers cou ld be inju red wh ile
chang ing a wheel if you do not follow these
safety precautions :
Emergenc y ass is tanc e
-If you have a flat tire, move a safe distance
off the road. Turn off the eng ine, turn the
emergency flashers on and use other warn­ ing dev ices to alert other motorists .
- Make sure that passengers wait in a safe
p lace away from the vehicle and well away
from the road and traff ic .
- To help prevent the veh icle from moving
suddenly and possib ly slipping off the jack ,
always fu lly set the par king brake and block
the front and back of the wheel diagonally
opposite the wheel being changed. W hen
one front w heel is li fted off the gro und,
p lacing the Au tom atic Transmi ssion in P
(Park) will
not p revent the vehicle from
mov ing.
- Before you change a wheel, be sure the
g ro u nd is leve l and firm. If necessary, use a
sturdy board under the jack .
- Always s tore the vehicle tool ki t, the jack
an d the replaced tire in the luggage com­
pa rtment ¢
page 213 .
(D Tips
Befo re c hangin g the wheel, you mus t activ ate
the jacking mode, so that the a utomat ic con ­
tro ls for the Adaptive Air Suspension do not
make it more di fficult to lift the vehicle with
the jack
¢ page 315 .
Changing a wheel
When you change a wheel , follow the sequence
described below step -by-step and in exactly that
order .
1. Activate the vehicle jack mode ¢ page 315 .
2. Remove the de corative wheel cover *. For
more detai ls see
a lso ¢ page 314, Decora­
tive wheel covers
or ¢ page 314, Wheels
with wheel bolt caps .
3. Loosen the wheel bolts ¢ page 315 .
4. Loca te t he p roper mount ing point for the
jac k and alig n the jack be low that po int
¢page 315 or ¢ page 316.
S. Rai se the ca r wi th the jack ¢ page 315 or
¢page 316 .
313

Emergency assistance
6. Remove the wheel with the flat tire and then
install
the spare r::!> page 318.
7. Tighten all wheel bo lts light ly .
8. Lower the veh icle w ith the jack.
9. Use the wheel bolt wrench and firmly t ighten
a ll whee l bolts
r::!> page 315 .
10 .
Replace the decorative wheel cover* .
11. D eactivate the vehi cle jack mode in the MMI:
ICAR I fu nction bu tton > Car systems con trol
b utt on
> Servicing & c heck s > Air susp .: ja ck
mode > Off.
The vehicle jack mode switches off a utomat ically
at speeds above
10 k m/ h.
_& WARNING
Alw ays read and fo llow all WARNI NGS and in ­
formation
c::> .&. in AB: Raising the vehicle on
poge316an d
¢page 319.
After changing a wheel
A wheel change is not complete without the do ­
ing the following.
• A lway s store the vehicle tool kit, the jack* a nd
t he repl aced t ire in the luggage compartment
r::!:> poge 213.
• Check the tire pre ssure on the spare whee l im ­
med iate ly after mount ing it.
• As soon as possible, have th e tightening tor­
ques
on all wheel bolts checked with a torque
wrench. The correct tightening torque is
90 ft
lb
(120 Nm) .
• Have the fla t tire replaced as soon as possible .
(D Tips
- If you notice that the whee l bolts are cor­
r oded and diffic ult to t urn wh ile cha nging a
tire, they should be rep laced before you
c hec k th e tighte ning torque .
- Drive a t reduced speed until you have the
tightening torques c hec ke d .
- After changi ng a wheel, the ti re pressure in
a ll four tires must be chec ked/corrected and
the tire pr ess ure mon itoring indicato r mus t
be store d in t he MM I
r::!:> page 302 .
314 Decorative wheel covers
App
lies to : vehicles with decorative w heel covers
The decorative wheel covers must be removed
first to access the wheel bolts.
F ig. 273 Changing a whee l: Remov ing t he whe el cover
Removing
• Insert the hook (p rovided w ith the vehicle tool
kit) i n the hole in the wheel hu b cover .
• Pull off the decorative wheel cover r::!:> fig. 273 .
Wheels with wheel bolt caps
Applies to: vehicles with w heel bolts with caps
The cops must be removed first from the wheel
bolts before the bolts con be unscrewed.
Fi g. 274 Chang ing a wheel: remov ing the w heel bo lt caps
Removing
• Push the plastic clip (prov ided with the vehicle
tool k it) over the whee l bolt cap until the inner
reta iners on the clip a lign with t he edge of the
cover.
• Remove the cap with t he plastic clip (veh icle
t oo l kit )
r::!> fig. 274.
Refitt ing
• Place the caps over the whee l bolts and push
them back on .

lL t:0 ....
"' ......
"' .... 0 0 :c ' The caps are to protect and keep the wheel bolts
clean.
Loosening and tightening the wheel bolts
Th e whe el bolts must be loos en e d b efor e raising
the vehicle .
Fig. 275 C han gin g a w hee l: l oose ning t he wheel bo lt s
Loo sening
.. Slide the w heel wr enc h onto the wheel bolt as
far as it will go .
.. Take tight hold of the end of the wrench handle
and turn the wheel bolts
c o unter -clock wise
about one single tu rn in the d irection of ar row
¢ fig. 275.
Tightening
.. Slide the wheel wrench onto the wheel bolt as
far as it w ill go.
.. T ake t ight hold of the end of the wrench handle
and tu rn each whee l bolt
cl ockwi se until it is
seated.
& WARNING
- Do not use force or hurry when changing a
wheel
-you can cause the vehicle to slip off
the jack and cause serious personal injuries .
-Do not loosen the wheel bolts more than
one turn
before you raise the vehicle with
the jack. - You risk an injury.
(D Tips
- Never use the hexagonal socket in the han­
dle of the screwdriver to loosen or tighten
the wheel bo lts .
- If a whee l bolt is very tight, you may find it
easier to loosen by carefully push ing down
Em ergen cy as sis tanc e
on the end of the whee l bolt wrench with
one foot only . As you do so, hold on to the
car to keep your balance and take care not
to slip .
AB: Raising the vehicle
The vehicle must b e lifted with the jack first be­
fore the wheel can be removed.
Fi g. 276 Sill panels: ma rk in gs
F ig. 277 S ill: posit ion ing t he veh icle jac k
.. Act iva te the veh icle jack mode in the MMI :
!CARI function button> Car system s control
button >
Servi cing & ch ecks > Air su sp. : jack
mode > On .
.. Engage the parking brake to prevent your vehi­
cl e from rolling unintentiona lly.
.. Move the s elector le ver to p osition P .
.. Find the mark ing (imprint) on the sill that is
nearest the wheel that will be changed
¢ fig . 2 76 . Beh ind the marki ng, there is a lift­
ing point on the sill for the veh icle jack .
.. Turn the ve hicl e ja ck located u nder the lift ing
point on the sill to raise the jack unt il its
a rm @
¢ fig. 277 is located under the design ated plas­
tic mo unt ¢
_A ¢(D .
.. Align the jack so that its arm @¢ fig. 2 77 en­
gages in the designated lifting point in the door
sill and the movable base @ lies flat on the
""
315

Emergency assistance
Taking the wheel off/installing the spare
Follow these instructions step-by-step for chang­
ing the wheel .
Fig. 28 0 Changing a wheel: using the screw driver handl e
(wit h th e blade re m oved) to turn the bol ts
F ig . 2 81 Changing a wheel: alignment p in inside t he top
hole
Afte r you have loosened a ll w heel bo lts and
raised t he vehi cle off the ground, remove and re­
p lace the whee l as fo llows:
Removing the wheel
• U se the hexagonal so cket in the screwdriver
handle
t o comple tely remove the topmost
whee l bolt and set it aside on a
clean surfa ce
¢ fig. 280 .
• Screw the th readed end of the alignment pin
from the tool kit hand-tight into the empty bolt
hole¢
fig. 2a1 1>.
• The n remove the other whee l bolts as desc ribed
above.
• Takeoff th e wheel leav ing the a lignm ent pin in
the bolt ho le
¢ 0 .
l) Applies to vehicles with ceram ic brake rotors*: Use a sec­
ond alignment
pin* (stored in th e spa re whee l well mo ld­
ing) for the lower ho le, fo llowing t he descr iption for the
first alignment pin .
318
Putting on the spare wheel
• Lif t the sp are whee l and caref ully slide it over
t he alignment p in to guide it in place
¢ (D .
• Use the hexagonal socket in the sc rewdr iver
ha nd le to screw in and tighten a ll w heel bolts
slightly.
• Remove the alignment pin and insert and tight­
en the remaining w heel bo lt slight ly like the
rest.
• Tu rn the jack hand le co unte r-clockw ise to lowe r
t he vehicle unt il t he jac k is f ully re leased.
• Use the w heel bo lt wren ch to tighten a ll wheel
bolts fi rm ly¢
p age 315. Tighten them cross­
wise,
from one bo lt to the (a pprox imately) op ­
posite one, to keep the whee l centered.
([» Note
When remov ing o r installin g the wheel, the
rim co uld hit the brake rotor/ce ramic brake
r otor * and damage t he rotor . Work carefully
and have a second person he lp you.
(D Tips
N eve r use the he xagonal socket in the han dle
of the sc rew drive r to loosen or t ig hten the
whee l bolts.
- Pull the reversible blade from the screwdr iv­
er before yo u use t he hexagona l soc ket in
t h e handle to t urn the whee l bolts.
- When mounti ng tires with
unidirectional
tread design
make sure the tread pattern is
pointed the right
way¢ page 319.
- The wheel bolts sho uld be clean and easy to
t u rn. Check for dirt and corrosion on the
mating surfaces of both the wheel and t he
hub. Remove all dirt from these s urfaces be­
fore remounti ng the whee l.

lL t:0 ....
'"" ......
'"" .... 0 0 :c ' Tires with unidirectional tr ead 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 t ire with a tread pattern in­
tended fo r use in a specific direction, please note
the following:
- The direction of rotat ion is marked by an arrow
on the side of the tire .
- If the spare tire has to be installed in the incor­
rect direction, use the spare tire only tempora ­
rily s ince the tire will not be able to achieve its
opt imum performance character istics with re­
gard to aquaplaning, noise and wear .
- We recommend that you pay particular atten­
t ion to this fact during wet weather and that
you adjust your speed to match road condi­
tions.
- Replace the flat tire with a new one and have it
installed on your vehicle as soon as possible to
restore the handling advantages of a unidirec­
tiona l tire .
Notes on wheel changing
Please read the information ~ page 290 if you
are going to use a spare tire which is different
from the tires on your vehicle.
After you change a tire:
- Check the tire pressure on the spare immedi­
ately after installation.
- Have the wheel bolt tightening torque
checked with a torque wrench as soon as pos­
sible 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 corroded
and difficult to turn while changing a tire ,
they should be replaced before you check the
tightening torque .
Emergency assistance
-Replace the flat tire with a new one and have
it installed on your vehicle as soon as possi­
ble. Remount the wheel cover.
Until then , drive with extra care and at reduced
speeds.
A WARNING
- If you are going to equip your vehicle with
tires or rims which differ from those which
were factory installed, then be sure to read the information
Q page 290.
- Always make sure the damaged wheel or
even a flat tire and the jack and tool kit are
properly secured in the luggage compart­
ment and are not loose in the passenger
compartment.
- In an accident or sudde n maneuver they
could fly forward, injuri ng anyone in the ve­
h icle .
- Always store damaged wheel, jack and tools
securely in the luggage compartment. Oth­
erwise, in an accident or sudden maneuver
they could fly forward, causing injury to pas­
sengers in the vehicle.
Spare tires
General information
Applies to : vehicles wit h spare tire/space-saving spare tire
(com pact spa re tire)
Fig. 282 Lu ggage compar tmen t: ca rgo floor cover fo lded
upwa rd
The spare tire is intended for short-term use on-
-
ly. Have the damaged tire checked and, if neces­
sary, replaced by an authorized Audi dealer or au­
thorized Audi Serv ice Facility as soon as possible.
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