height AUDI S8 2015 Owner's Manual

26 2 T ire s and wheel s
chains because the vehicle will be ex­
tremely low. If you do drive with snow
chains on while the vehicle is at this lev­
el, the snow chains might severe ly dam­
age the wheelhouse and other parts of
the veh icle.
(D} Tips
Where snow chains are mandatory oncer­
tain roads, this normally also applies to
veh icles with All Wheel Drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of whee l bolts is matched to the
factory installed r ims. If different rims
are fit­
ted, the correct wheel bolts with the right length and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
secure ly 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 mode l
¢page 292.
_& WARNING
Imprope rly tig htened o r maintained whee l
bolts can be come loose ca using loss of
contro l, a co llision and serious persona l in­
jury.
- Always keep the wheel bol ts and the
threads in the wheel hubs clean so the
wheel bolts can tu rn easily and be prop­
er ly tightened .
- Never grease or oil the wheel bo lts and
the threads in the wheel h ubs. They can
become loose w hile 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 whee ls bolts on your
vehicle.
- Always maintain the correct tighten ing
torq ue for the wheel bo lts 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 tighte ning torque is
too high, the wheel bolts a nd threads
can be damaged and the whee l can be­
come loose.
([) Note
The specified torque for the whee l bolts is
90 ft lb (120 Nm) with a tolerance of± 7,4
ft lb(± 10 Nm). Torque whee l bolts diago­
nally. Afte r changing a whee l, the torque
must be checked as soon as possible wi th a
torque wrench -pre ferably by an au thor­
ized Audi dealer or qualified workshop .
Low aspect ratio tires
Your Audi is factory-equipped with low aspect
ratio tires. These tires have been thoro ughly
tested and been se lected specifically for your
model for their superb performance, road fee l
and hand ling u nder a var iety of d riv ing condi ­
t ions . As k your author ized 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 rep resents the ratio
of the t ire's s idewa ll height in relation to its
t read width ex pressed in percentage. Conven­
tiona l tires have a he igh t/w idth rat io of 60 or
more.
The performanc e of low -a sp ec t-ratio tires i s
pa rticularly sensitive to improper inflation
pre ssure . It is therefore important that low
a spect ratio tires are inflated to the specified
pre ssure and th at the inflation pressure i s
regularly checked and maintained. Tire pre s­
s u res should be checked at least once a
month and always befo re a long trip
¢ page 251, Checking tire pressure .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact w ith potholes, curbs, gull ies .,..

272 What do I do now?
hold on to the car to keep your balance
and take care not to slip.
AB: Raising the vehicle
The vehicle must be lifted with the jack first
before the wheel can be removed.
Fig. 224 Sill pa nels : m ark ings
Fig. 225 Sill: position ing t he veh icle jack
.. Activate the vehicle jack mode in the MMI:
I CAR ! function button > Car systems control
button>
Servicing & checks> Air susp.:
jack mode
> On.
.. Engage the parking brake to prevent your
vehicle from rolling unintentionally.
.. Move the
selector lever to position P .
.. Find the marking (imprint) on the sill that is
nearest the wheel that will be changed
o
fig. 224. Behind the marking, there is a
lifting point on the sill for the vehicle jack.
.. Turn the
vehicle jack located under the lift­
ing point on the sill to raise the jack until its
arm @o
fig. 225 is located under the des ­
ignated plastic mount o ,& o0 .
.. Align the jack so that its arm @ o
fig. 225
engages in the designated lifting point in
the door sill and the movable base @ lies
flat on the ground. The base @ must be
ver­
tical
under the lifting point @. ..
Wind the jack up further until the flat tire
comes off the ground o
.&,.
Position the vehicle jack only under the desig­
nated lifting points on the sill
c:> fig. 224.
There is exactly one location for each wheel.
The jack must not be positioned at any other
location
c:> .&, c:>Q).
An unstable surface under the jack can cause
the vehicle to slip off the jack. Always provide
a firm base for the jack on the ground. If nec­
essary place a sturdy board or similar support
under the jack. On
hard, slippery surfaces
(such as tiles) use a rubber mat or similar to
prevent the jack from slipping
c:> .&,.
A WARNING ~
-You or your passengers could be injured
while changing a wheel if you do not fol­
low these safety precautions:
- Position the vehicle jack only at the
designated lifting points and align the
jack. Otherwise, the vehicle jack could slip and cause an injury if it does not
have sufficient hold on the vehicle.
- A soft or unstable surface under the
jack may cause the vehicle to slip off
the jack . Always provide a firm base for
the jack on the ground. If necessary,
use a sturdy board under the jack.
- On hard, slippery surface (such as tiles)
use a rubber mat or similar to prevent
the jack from slipping.
- To help prevent injury to yourself and
your passengers:
- Do not raise the vehicle until you are
sure the jack is securely engaged.
- Passengers must not remain in the ve­
hicle when it is jacked up.
- Make sure that passengers wait in a
safe place away from the vehicle and
well away from the road and traffic .
- Make sure jack position is correct, ad­
just as necessary and then continue to
raise the jack.
- Changes in temperature or load can af­
fect the height of the vehicle.

274 What do I do now ?
-Passengers must not rema in in the ve­
h icle when it is jacked up.
- Make sure that passengers wait in a
safe p lace away from the vehicle and
well away from the road and traffic.
- Make sure jack position is correct, ad­
just as necessary and then continue to
raise the jack.
- Changes in temperature or load can af­
fect the height of the vehicle.
CD Note
D o not lift t he vehicle by the si ll. Position
the vehicle jack only at the designated lift­
ing points on the sill. Otherwise, your vehi­
cle will be damaged.
@ Tips
The vehicle jack mode switches off auto­ mat ica lly at speeds above
10 km/h.
Taking the wheel off/installing the spare
Follow these instructions step-by-step for
changing the wheel.
Fi g. 228 Changing a wheel: using the screwdrive r han­
dle (w ith t he blade r emoved) to turn the bo lts
F ig . 2 29 Changing a whee l: a lignmen t pin inside th e
top hole
After yo u have loosened all wheel bo lts and
raised the vehicle off the ground, remove and
replace the wheel as follows:
Removing the wheel
.,. Use the hexagonal soc ket in the scr ewdriv ­
er handle
to completely remove the top­
most whee l bolt and se t it aside on a
clean
surface r=> fig. 228 .
.,. Screw the threaded end of the alignme nt
pin from the tool kit hand-t ight into th e
empty bolt hole
Q fig. 229 .
.,. Then remove the other whee l bolts as de­
scribed above.
.,. Take off the whee l leaving the a lignment pin
in the bo lt ho le r=> 0 .
Putting on the spare wheel
.,. Lift the spare whee l and carefully s lide it
over the alignment p in to g uide it in place
Q0 .
.,. Use the hexagona l socket in th e screwdriver
ha ndle to screw in and tig hten all whee l
bolts
slightly.
.,. Remove the al ignment pin and insert and
tighten the remain ing wheel bolt slightly
like the rest .
.,. Turn the jack hand le counter-clockwise to
lower the vehicle until the jack is fully re­
leased .
.,. Use the wheel bo lt wrench to tighten all
wheel bo lts fi rm ly
r=> page 271 . Tighten
them
crosswise, from o ne bolt to the (ap­
p rox ima tely) opposi te one, to keep the
wheel ce nte red .
CD Note
When remov ing or i nsta lling the whee l,
the rim could hit t he b ra ke ro to r and d am­
age the ro tor. Wor k caref ully and have a
seco nd person hel p you.
(D Tips
Never use the hexagon al socke t in the han­
d le of t he screwdriver to loosen or tighten
the wheel bo lts .
Ill-

288 Techni cal Dat a
Gross Ax le Weight R atin g
The Gross Axle Weight Rating is the maximum
l oad that can be applied at each axle of the
vehicle
c::> &. .
Vehicle capacity weight
The vehicle capac ity we ight (max. load) is list­
ed eithe r on the dr iver's side B-pillar or inside
the fuel filler flap.
A WARNING
- The actual Gross Axle Weight Rat ing at
the front and rear axles should not ex­
ceed the perm iss ible weights, and their
combination must not exceed the Gross
Vehicle Weight Rat ing.
Dimensions
I>
-
- Exceeding permissible weight ratings can
result in veh icle damage, acc idents and
personal injury.
(D Note
- The vehicle capacity weight figures apply
when the load is distributed evenly in the
vehicle (passengers and luggage). When
transport ing a heavy load in the luggage
compartment, carry the load as near to
the rear axle as poss ible so that the vehi­
cle's handling is not impaired.
- Do not exceed the maximum permissible
axle loads or the maximum gross veh icle
we ight. Always remember that the vehi­
cle's handling w il l be affected by the ex­
tra load. Therefo re, adj ust your speed ac­
cordingly.
- Always observe local regulat ions.
AS SS ASL
Length in (mm) 202.2 (5135) 202.6 (5147) 20
7.3 (5265)
Width in (mm)
76.7 (1949) 76 .7 (1949) 76 .7 (1949)
Width (across mir rors) in (mm) 83.1 (2111) 83.1 (2111) 83.1 (2111)
Height (unloaded)a) in (mm)
57.5 (1460) 57 .4 (1458) 57 .9 (1471)
a l The height of the vehicle depends on the tires an d th e suspension.
When driv ing up steep ramps, on rough roads,
over curbs, etc . it is important to remember
that some parts of your vehicle, such as spoil-
Capacities
Fuel tank: total capacity
Winds hield and headlight* washer fluid container ers or exhaust
system components, may be
close to the ground . Be careful not to damage
them .
gal (liters) approx. 21.7 (82.0)
quarts (liters) approx. 5.29 (5.0)