2018 AUDI A8 tires

Wheels
under controlled conditions on a specified
government test course.
For example, a tire graded 150 would wear one
and one ha lf (11/2) times as well on the govern­
ment course as a tire graded 100 .
The relative performance of tires depends upon
the actual conditions of their use, howeve r, and
may depart significant ly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate .
Traction
The traction grades, from highest to lowest, are
AA, A, Band
C. Those grades represent the tire's
ability to stop on wet pavement as measured un­
der contro lled conditions on specified govern­
ment test surfaces of aspha lt and concrete. A tire
marked C may have poor traction performance
¢ & .
Temperature
The temperatu re grades are A (t he highest), B ,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate ­
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire
fa ilure¢ fr:. .
The grade C corresponds to a leve l of perform ­
ance which a ll passenger car tires must meet un­
der the Federa l Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher leve ls
of performance on the laboratory test wheel than
the mi nimum required by law.
A WARNING
-
The traction grade assigned to this tire is
based on straight-ahead braking traction
t ests, and does not include acceleration, cor­
nering, hydroplaning or peak traction charac­
teristics.
300
A WARNING
The temperature grade for t his tire is estab­
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla­
tion, or excessive loading, either separately or
in comb ination , can cause heat buildup and
possible tire failure.
A WARNING
-
-
Temperature grades apply to tires that are
properly inflated and not over or under inflat­
ed .
Tire Pressure Monitoring
System
(AS, S8)
ill General notes
Applies to: AS, 58
Each tire, including the spare (if prov ided),
shou ld be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure labe l.
(If your veh icle has
tires of a different size than the size ind icated on
the ve hicle placard or tire inflat ion pressure la­
bel , you should determ ine the proper tire infla­
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) that illum inates a low tire pressure tell­
tale when o ne or more of your tires is significant­
l y unde r-inflated. According ly, when the low tire
pressure telltale illum inates, you sho uld stop and
check your tires as soon as possible, and inflate
them to the proper pressure . Driving on a signifi ­
cant ly under -inflated tire causes the tire to over­
heat and can lead to tire fai lure. Under-inflation
also reduces fue l eff iciency and tire tread life,
and may affect the vehicle's handling and stop­ ping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the dr iver's re ­
spons ibility to maintain correct t ire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire pres-
sure te lltale .
.,.

lL t:0 ....
"" ......
"" .... 0 0 :c ' Your vehicle has also been equipped with a TPM S
malfunction indicator to indicate when the sys­
tem is not operating properly. The TPMS mal­
function indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi­
mately one minute and then remain cont inuously
illuminated . This sequence will continue upon
subsequent vehicle start-ups as long as the mal­
function ex ists.
When the malfunction indicator is illuminated,
the system may not be ab le to detect or signal
low tire pressure as intended . TPM S malfunctions
may occur for a var iety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly. Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
If the Tire Pressure Monitoring System
indicator appears
Applies to: AS, 58
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction .
Fig. 268 Instrument clus ter: indicator light with message
Using the ABS sensors, the tire pressure monitor­
ing system compares the tire tread circumfer­
ence and vibration characteristics of the individu­
al tires . If the pressure changes in one or more
tires, this is ind icated in the instrument cluster
display with an indicator light
ti] and a message .
Wheels
If only one tire is affected, the location of that
tire will be indicated.
The tire pressures must be stored in the Infotain­
ment system again each time the pressures
change (switching between partial and full load
pressure) or after changing or replacing a tire on
your vehicle
c:> page 302. The tire pressure mon i­
toring system only monitors the tire pressure you
have stored. Refer to the tire pressure label for
the recommended tire pressure for your vehicle
c:> page 293, fig . 267 .
Tire tread circumference and vibration character­
istics can change and cause a tire pressure warn­
ing if :
- the t ire pressure in one or more tires is too low
- the tire has structural damage
- the tire was replaced or the tire pressure was
changed and it was not stored
c:> page 302
- the spare tire* is installed
Indicator lights
ti] Loss of pressure in at least one tire c:> ,&..
Check the tires and replace or repair if necessary.
Check/correct the pressures of all four tires and
store the pressure again in the Infotainment sys­
tem
c:>page 302.
mm ( T ire Pressure Monitor ing System) Tire
pressure: System malfunction!. Ifm:m appears
after switching the ignition on or while driving
and the
ti] indicator light in the instrument clus­
ter blinks for approximately one minute and then
stays on, there is system malfunction. Try to
store the correct tire pressures
c:> page 302. If
the indicator light does turn off or turns on again
after a short period of time, drive to an author­
ized Audi dealer or authorized Audi Service Facili­
ty immediately to have the malfunction correct­ ed .
.&, WARNING
- If the tire pressure ind icator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu­
vers. Stop as soon as possible and check the
tires and their pressure.
..,.
301

Wheels
-The driver is responsible for maintaining the
correct tire pressure. You must check the
tire pressure regularly.
- Under certain conditions (such as a sporty
driving style, winter conditions or unpaved
roads), the tire pressure monitoring system
indicator may be delayed .
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted can lead to
vehicle damage or accidents .
(D Tips
- The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function .
- Using snow chains may result in a system
malfunction.
- The tires with the identification
"AO" or
"RO" ¢ page 290 have been matched with
your Audi tire pressure monitoring system.
Using these tires is recommended.
Storing tire pressures
Applies to: AB, S8
If the tire pressure changes or a tire is replaced,
it must be confirmed in the Infotainment sys­
tem .
.,. Make sure before storing that the tire pressures
of all four tir es meet the specified values and
are adapted to the
load ¢ page 291 .
.,. Switch the ignition on .
.,. Select : the ICARI function button > Car Systems
control button > Service & control > Tire pres­
sure monitor> Store tire pressure > Yes, store
now.
(D Tips
Do not store the tire pressures if snow chains
are installed. Otherwise the system could
malfunction.
302
Tire Pressure Monitoring System (SB plus)
ill General notes
Applies to: S8 plus
Each tire, including the spare (if provided),
shou ld be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size ind icated on
the veh icle placard or tire inflat ion pressure la­
bel, you should determine the proper tire infla­
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) t hat illuminates a low tire pressure tell­
ta le when o ne or more of your tires is significant­
l y under-inflated. According ly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure . Driving on a signifi ­
cant ly under-inflated tire causes the tire to over­
heat and can lead to tire failure . Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop ­
ping ability .
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
spons ibility to maintain correct t ire pressure,
even if under-inflation has not reached the level
to trigge r illumination of the TPM S low t ire pres­
su re te lltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to ind icate when the sys­
tem is not operating prope rly . The TPM S mal­
function indicator is combined with the low t ire
pressure telltale. When the system detects a
malfunction, the telltale will flash for approxi­
mately one minute and then remain continuously
illuminated. This sequence wi ll continue upon
subsequent vehicle start-ups as long as the mal­
function exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions ..,_

u. co .... N
" N .... 0 0 :c ' may occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS
from functioning properly . Always check the
TPMS malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensure
that the replacement or alternate tires and
wheels allow the TPMS to continue to function
properly.
Description
Applies to: 58 plus
The tire pressure monitoring system monitors
the pressure in the four tires when driving.
The system uses sensors that measure the tem ­
perature and pressure in the tires . The data is
sent from these sensors to the control module by
radio frequency.
The Tire Pressure Monitoring System shows the
current pressures and temperatures of the tires
in the Infota inment system
c:> page 303 . It also
compa res the current tire pressures with the
stored tire press ures and gives a warning in the
driver information system if the tire pressure is
different from what is stored
c:> page 304.
The system does not detect if the stored tire
pressures match the recommended tire pres­
sures.
- Every time the tire pressures change, for exam-
ple when the load in the vehicle changes,
- after replac ing a tire, or
- if wheels with new wheel sensors are used,
you must store the tire pressures again
c:> page 304.
A WARNING
-The tire pressure mon itor ing system assists
the driver in monitoring tire pressures. The
dr iver is responsible for having the tires in­
flated to the correct pressure.
- Do not change the tire pressure when the
temperature of the tire is extremely high.
T his cou ld result in serious damage to the
t ir e and even cause the tire to burst, in­
creasing the risk of an accide nt.
Wheels
-A tire with low pressure flexes more . This
heats the tire up too much. This could cause
the tread to separate and even cause the
tire to burst, increasing the risk of an acci­
dent.
- The Tire Pressure Monitoring System does
not warn you of damage or defects in the
tire construct ion that could cause the tire to
burst, for example. Inspect your tires regu­
larly.
@ For the sake of the environment
Low tire pressure increases fuel consumption
and tire wear.
(D Tips
-The pressure of the spare t ire* is not mon i­
tored.
- If tires are replaced, the sensors/va lves do
not need to be removed or replaced. Just re­
placed the valve stem and, if necessary, the
valve and the whee l electronics . If you have
questions, see an authorized Audi dealer or
authorized Audi Service Facility.
Displaying tire pressures/temperatures
Applies to: 58 plus
Requirement: the ignition must be switched on.
.. Select: the I CAR! funct ion button > Car systems
> Service & control > Tire pressure monitor >
Display tire pressure .
The current tire pressures are shown in green and
yellow numbers in the Infotainment system:
-Green: the current tire pressure and the spec i­
fied tire pressure are approx imately the same .
-Yellow: the current tire pressure is too low
compared to the specified tire pressure .
The specified tire pressure is the last tire pres ­
sure that was stored
c:> page 304 .
Note that the tire pressure also depends on the
temperature of the tire . The tire pressure in­
creases as the engine becomes warmer while
driv ing.
.,.
303

Care and cleaning
Care and cleaning
General information
Regular, proper care helps to maintain your vehi­
cle's value. It can also be a requirement when
submitting warranty claims for corrosion damage
and paint defects on the body.
The necessary care products can be obtained
from an authorized Audi dea ler or authorized
Audi Service Facility. Read and follow the instruc ­
tions for use on the packaging.
A WARNING
-Using cleaning and care products incorrectly
can be dangerous to your health.
- Always store clean ing and care products out
of reach of children to reduce the r isk of poi­
sonin g.
@ For the sake of the environment
- Preferab ly purchase environmenta lly-friend­
l y cleaning products.
- Do not dispose of leftover cleaning and care
products with household trash.
Car washes
The longer that deposits such as insects, bird
droppings, tree sap or road salt remain on the ve­
h icle, the more the surface can be damaged. High
temperatures such as those caused by sunlight
increase the damaging effect.
Before washing, r inse
off heavy deposits with
p lenty of water.
Stubborn deposits such as bird droppings or tree
sap are best removed with plenty of water and a microfiber cloth.
A lso, wash the underside of yo ur vehicle once
road sa lt stops being used for the season .
Pressure washers
When washing your veh icle w ith a pressure wash­
er , al ways fo llow the operating instructions pro­
vided with the press ure washer. This is especially
important in regard to the pressure and spraying
distance. Do not aim the spray directly at the
306
seals on the side windows, doors, lids or the sun­
roof* or at tires, rubber hoses, insulating materi ­
a l, sensors* or camera lenses* . Keep a distance of
at least 16 in (40 cm).
Do not remove snow and ice with a pressure
washer.
Never use cone nozz les or high pressure nozzles.
The water temperature must not be above 140 °F
(60 °C) .
Automatic car washes
Spray off the vehicle before washing.
Make sure that the windows and roof* are closed
and the windshie ld wipers are
off . Follow instruc ­
tions from the car wash operator, especially if
there are accessories attached to your vehicle.
If possible, use car washes that do not have
brushes.
Only use car washes where the vehicle remains
stationary and the washing equipmen t moves
around the vehicle when washing and drying. Car
washes that move the vehicle t hrough the car
wash using a chain are not recommended .
Washing by hand
Clean the vehicl e starting from the top and work­
ing down using a soft sponge or cleaning brush.
Use solvent -free cleaning products.
Washing vehicles with matte finish paint by
hand
To avoid damaging the paint when washing, first
remove dust and large particles from your vehi ­
cle. Insects, grease spots and fingerprints are
best removed with a special cleaner for matte
finish paint .
Apply t he product using a microfiber cloth. To
avoid damaging the paint surface, do not use too
much pressure.
Rinse t he ve hicle thoroughly with wate r. Then
clean using a neutral shampoo and a soft micro ­
fiber clot h.
R inse the vehicl e thoroughly again and let it air
dry. Remove any water residue using a chamois.
..,..

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 .

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.
II>-
319