2014 AUDI A8 inflation pressure

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 .
@ Tips
Where snow cha ins are mandatory oncer­
tain roads, this normally also applies to
veh icles with All Wheel Drive.
Wheel bolts
Wheel bolts mu st always be tigh tened to the
correc t torque .
The design of whee l bolts is matched to the
factory in sta lled 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 f itted
secure ly and that the brake system f unctions
correctly .
In certain circumstances, you may not use
wheel bolts from a d iffe rent vehicle -even if it
i s the same mode l
¢page 294.
A WARNING
Imprope rly tig hte ned or maintained whee l
bolts can be come loose causin g loss of
contro l, a co llision and serious persona l in­
jury .
- Alw ays keep the w heel bolts and the
th reads in the wheel hubs clea n so the
wheel bolts can turn easily and be prop­
er ly tightened .
- Never grease or oil the wheel bo lts and
the threads in the w heel h ubs. They can
become loose while 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 co rrect tightening
torq ue for the wheel bo lts to reduce the
Tire s an d wheel s 265
risk of a wheel loss. If the tighte ning tor­
que of t he 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 h igh, the wheel bol ts and threads
can be damaged and the whee l can be­
come loose.
(I) Note
The specified torque for the whee l bolts is
90 ft lb ( 120 Nm) with a tole ranc e of± 7,4
ft lb(± 10 Nm). Torq ue whee l bolts diago­
nally. Afte r cha nging a whee l, the torq ue
must be checked as soon as possible wi th a
torque w rench -prefe rably by an au thor­
i z ed Audi dealer or qualif ied workshop .
Low aspect ratio tires
Your Audi is facto ry-eq uipped 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 handling under a variety of driving cond i­
tions . Ask your authorized Audi dealer for
more details.
The low aspect ratio of these t ires is ind icated
by a numeral of
55 or less in the tire's size
designation . The numera l rep resents the ratio
of the t ire's sidewall height in relation to its
t read width ex pressed in perce ntage. Conven ­
tion al tires have a he igh t/w idth ratio of 60 or
more.
The performance of low-aspe ct-ratio tire s is
particularly sensitiv e to improper infla tion
pres sure. It is therefore important that l ow
a spect ratio tires are inflated to the specified
pre ssure and that the inflation pressure is
regularly checked and maintained. Tire pres·
sures should be checked at least once a
month and always before a long trip
¢ page 254 , 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 it h potholes , curbs, gul lies ..,.
•
•

266 Tire s and wheels
or ridges on the road, part icu larly if the tire is
underinflated.
I n o rder to minim ize the o ccurrence of impact
damage to the tires of your vehicle, we recom­
mend that you observe the following precau ­
tions:
- Always maintain recommended inflation
pressures. Check your tire pressure every
2,000 miles (3,000
km) and add air if neces­
sary .
- Drive carefu lly on roads with potholes, deep
gullies or ridges. The impact from driving
through or over such obstacles can damage
your tires. Impact with a curb may also cause damage to your tires.
- After any impact, immediately inspect your
tires or have them inspected by the nearest
authorized Aud i dealer. Replace a damaged
t ir e as soon as possible .
- Inspect your tires every 2,000 miles (3,000
km) for damage and wear . Damage is not al­
ways easy to see . Damage can lead to loss of
air and underinflation, wh ich could eventu­
ally cause t ire failure . If you be lieve that a
t ir e may have been damaged, replace the
t ir e as soon as possible.
- T hese tires may wea r mo re quick ly than oth­
ers.
- Please a lso remember that, whi le these t ires
deliver respons ive handling, they may ride
less comfortably and make mo re no ise than
other choices.
Reduced performance in winter/cold
season conditions
All tires are designed for certain purposes.
The low aspect ratio, ultra high performance
tires originally installed on your vehicle are in­
tended for maximum dry and wet road per­
formance and handling. They are not suitable
for cold, snowy or icy weather condit ions. If
you drive under those circumstances, you should equip your vehicle with all -season or
winter tires, which offer better traction under
those cond it ions. We suggest you use the rec­
ommended snow or all-season tires specified
for your vehicle, or their equivalent. Refer
to
q page 263 for more detailed infor­
mation regarding winter tires.
Tire pressure monitoring system
ill General notes
Applies to veh icles: w ith tire pressure monitoring system
Each tire, including the spare ( if provided),
shou ld be checked monthly when co ld and in­
flated to the inflation pressure recommended
by the veh icle manufacturer on the vehicle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the
s ize indicated on the vehicle placard or tire in­
flation pressure label, you should determine
the proper tire inflation pressu re fo r those
t i res).
As an added safety feature, your ve hicle has
been equipped with a tire pressure mon itoring
system ( TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires is significant ly under-inflated. According­
l y, when the low tire pressure telltale i llumi­
nates, you should stop and check your tires as
soon as possib le, and inflate them to the
proper pressure. Driving on a sign ificantly un­
der-inflated t ire causes the tire to overheat
and can lead to tire fa ilure . Under-inflation al ­
so reduces fuel efficiency and tire tread life,
and may affect the vehicle 's handling and
stopping ability.
Please note that the TPMS is not a substitute
for proper tire ma intenance, and it is the driv­
er's responsibility to maintain co rrect tire
pressure, even if under-inflation has not
reached the level to trigger illuminat ion of the
TPMS low tire pressu re tellta le .
Your vehicle has also been equipped with a
TPM S ma lfunction indicator to ind icat e when
the system is not operating properly. The
T PMS ma lfunction indicator is combined with
the low tire pressure telltale. When the sys­
tem detects a malfunction, the telltale will
flash for approximately one minute and then ..,_

268 Tire s and wheel s
_&. WARNING
-If th e tire pressure indicator appea rs in
the instrument cluster d isplay, one or
more of your tires is s ignificantly under­
inflated. Reduce your speed immediately
and avoid any hard steering or bra king
maneuvers . Stop as soon as possible and
check the t ires and the ir pressures. In­
flate the tire pressure to the proper pres ­
sure as indicated on the vehicle 's t ire
pressure label
q page 252. Driving on a
signif icant ly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also is likely to impair the vehicle's handling and stop­
ping ab ility .
- The driver is responsible for ma inta ining
the correct tire pressures. You must check the t ire pressures regula rly.
- Under certain cond itions (such as a spor­
ty driving style, winter condit ions or un­
paved roads), the pressure mon itor ind i­
cator may be de layed.
- Ask your author ized Audi dealer if r un­
flat tires may be used on your veh icle.
Yo ur vehicle regist rat ion becomes inval id
if yo u use these tires when not permit ­
ted. Damage to your vehicle or acc idents
cou ld also resu lt.
(D Tips
- The tire pressure monitoring system
stops working when there is an ESC/ABS
malfunction.
- Using snow chains may result in a system
malfunction.
- The tire pressure monitoring system on
you r A udi was developed using t ires with
the "AO" or "RO" identification on the
tire sidewall ~
page 259 . We recom­
mend using these t ires.
Reset tire pressure monitoring system
Applies to vehicles: with tire pressure monitoring system
If the tire pressure is adjusted, wheels are ro­
tated or changed, the TPMS must be reset via
MMI .
.. Switch on the ignition.
.. Select in the MMI :
ICARI function button>
Car system s control button > Servicing &
check s > Tire pres sure monitoring > Store
tire pre ssur es > Ye s, store now .
@ Tips
Do not sto re the tire pressure if there are
s now cha ins on the tire.

308 Index
Trailer towing
212
Operating instructions .............. 212
Park ing system ............ ... .... . 132
Technical requirements .... .. .. 212,213
Trailer towing tips .......... .. .... . 214
Train (transporting your vehicle) .... .. . 287
Transm ission . .............. ... .. ... 116
Transmission malfunction (indicator light) . .. .. .. ............. .. .. .. ... 120
Transport Canada .............. .... . 143
Transporting your vehicle .... .. .. .. .. . 287
Tread Wear Indicator (TWI) ... ... .. .. . 258
Trip odometer ............. .. .. .... .. 27
What does it mean when DEF appears in
the trip odometer d isplay? ......... .. 27
Trunk
refer to Luggage compartment lid . .. . . 37
Trunk escape handle ........ .. .. .... . 269
Turn signa ls . ................. ..... .. 48
Warning/indicator lights ........... . . 23
u
Unfasten ing safety belts 150
Unidirectional tires ............. .. .. . 248
Uniform tire quality grading ....... .. . 262
Unlock ing
L uggage compartment lid .. .. .. .. .. . . 37
Power locking switch ...... .. .. .... .. 36
Remote control .................... 35
Using the key ...................... 36
V
Valet parking ................. ..... .. 42
Vanity mirrors . . . . . . . . . . . . . . . . . . . 51, 52
Vehicle care/cleaning .............. .. .... . 216
Vehicle e lectrical system ...... .. .... .. 16
Vehicle identification label . ........ .. . 289
Vehicle Identification Number (VIN) ... . 289
Vehicle jack . . . . . . . . . . . . . . . . . . . 270, 275
Vehicle literature . . . . . . . . . . . . . . . . . . . . . 5
Vehicle shutt-down .......... ... .... . 209
Vehicle transport . .......... ... .. .. . 287
Venti lation ............... .. .. .... .. 79 Vinyl
Cleaning . ..... .. ................ . 219
w
Warning/indicator lights ............. . 11
Airbag system ... ............. ..... 18
Anti- lock braking system (ABS) ........ 19
Brake system . . . . . . . . . . . . . . . . . . . . . . 14
Electromechanical parking brake . .... . 15
Electronic power control . . . . . . . . . . . . . 20
Electronic Stabilization Control ( E5C) .. . 18
Generator ... .. .. ....... ...... .. .. . 16
Glow p lug system . . . . . . . . . . . . . . . . . . 20
Instrument cluster ............. .. .. . 10
Malfunction Ind icator Lamp (MIL) .. .. . 20
Safety be lt . ... .. ................ .. 16
T urn signals ..... ............. ..... 23
Warning/Indicator lights
Airbag system ... ............. .... 164
Dynamic steering . ............. .. .. . 22
PASSENGER AIR BAG OFF ........ ... 164
Warranty coverages .............. ... 292
Washer reservoir .. ................ . 247
Wear indicator .. .. ............. .... 258
Weights .. .. .. ... ... ... ..... ... .. .. 289
What happens if you wear your safety belt
too loose? .. .... .. ................ . 149
What happens to unbelted occupants? .. 146
What impairs driving safety? .... .. .. .. 136
What shou ld I do after changing a
whee l? ......... .. ................ . 255
What should I do after replac ing wheels? 255
Wheel bolts Torque .... .... ................... 265
Wheels ... ..... .. ................ . 248
Checking tire pressure .............. 254
Cleaning .. .... .. ............. .... 217
Cold tire inflation pressure ...... .. .. 252
General notes .. .. ............. .... 248
Glossary of tire and loading terminolo -
gy ........ ... .. .. ... ....... ... .. 249
New tires and whee ls ... ... ..... .. .. 259
T ires and veh icle load limits ..... .. .. 256
When must a safety belt be replaced? .. 148
When must the airbag system be inspect -
ed? ......... ... .. .. ............... 164