2015 AUDI S4 change wheel

232 Tires a nd whee ls
Recommended inflation
pressure
see c:::> page 230, Cold tire infla­
tion pressure.
Reinforced tire
means a tire design to operate
at higher loads and at higher
inflation pressures than the
corresponding standard t ire .
Reinforced tires may be identi ­
fied as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewa ll.
Rim
means a meta l support for a
tire or a tire and tube assembly
upon which the tire beads are
seated .
Rim diameter
means nominal diameter of the
bead seat. If yo u change your
wheel size, you will have to pur­
chase new t ires to ma tch the
new rim d iameter .
Rim size designation
means rim diameter and width.
Rim width
means nom inal distance be­
tween rim flanges.
Sidewall
means that por tion of a tire be­
tween the tread and bead.
Speed rating (letter code)
means the speed at wh ich a tire
is designed to be driven for ex­
tended periods of time . The rat­
ings range from 93 mph
( 1 50 km/h) to 186 mph
( 2 98 km/h)
c:::> page 2 50. You
may not find th is informat ion
on all tires because it is not re­
quired by law.
The speed rati ng letter code,
where applicable, is molded on
the ti re sidewall and ind icates
the maximum permissible road
speeds
c:::> & in Winter tires on
page 255.
Tire pressure monitoring
system*
means a system that detects
when one or more of a vehicle's
tires are underinflate d an d ill u­
minates a low tire press ure
warn ing telltale.
Tread
means that por tion o f a tire
that comes into contact with
the road.

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Tires and wheels 237
Model Tire designation Tire pressure
• Engine
normal load condition full load condition
• (up to 3 occupants)
front rear front rear
PSI kPA PSI kPA PSI kPA
PSI kPA
A4 Sedan: 225/55 Rl6 95H
32 220 29 200 33 230 35 240 2.0 liter All Season
4-cylinder 245/45 Rl 7 95H
All Season
32 220 29 200 33 230 35 240
245/40 Rl8 93V 32 220 29 200 33 230
35 240 High Performance
225/50 Rl 7 94H
33 230 30 210 35 240
36 250 All Season
245/40 Rl8 93H
33 230 32 220 36 250 38 260 All Season
255/35 Rl9 96V XL
32 220
30 210
35 240
35 240
High Performance
allroad: 225/55 Rl 7 97H
30 210 30 210 33 230 36 250 2.0 liter All Season
4-cylinder 245/45 Rl8 lOOH
All Season
32 220 32 220 33 230 36 250
24S/4S R18 96Y
30 210 30 210 33 230 36 250 High Performance
245/40 R19 98Y XL
32 220 29 200 35 240 38 260 High Performance
S4 Sedan: 245/40 Rl8 93H
36 250 32 220 41 280 41 280 3.0 liter
All Season
6-cylinder 245/40 Rl8 93Y
High Performance
39 270
35 240 41
280 41
280
255/35 Rl9 96YXL
39 270 33 230 41 280 41 280 High Performance
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side-
wall.
The correct tire pressure for the
spare wheel is located on a la­
bel on the driver's side B-pillar.
Because technical changes may
be made to vehicle equipment
during the model year, always
compare the tire size designa- tion on the tire pressure label
on your vehicle with the tires on
your vehicle. Make sure that the
tire size information on the ve­ hicle label is the same as the
size of the tires on the vehicle.
This is especially important if
the vehicle belongs to someone ""

242 Tires and wheels
-Only when all tires on the
vehicle are filled to the cor­ rect pressure, the tire
pressure monitoring sys­
tem* can work correctly.
-The use of incorrect tire
pressure values can lead to
accidents or other damage.
Therefore it is essential that
the driver observe the speci­
fied tire pressure values for
the tires and the correct pressures for the function of
the tire pressure monitoring
system*.
-Always inflate tires to the
recommended and correct
tire pressure before driving off.
-Driving with underinflated
tires bend more, letting
them get too hot resulting
in tread separation, sudden
tire failure and loss of con­
trol.
-Excessive speed and/over­
loading can cause heat
build-up, sudden tire failure
and loss of control.
-If the tire pressure is too
low or too high, the tires
will wear prematurely and the vehicle will not handle
well.
-If the tire is not flat and you
do not have to change a
wheel immediately, drive at
reduced speed to the near­
est service station to check
the tire pressure and add air
as required.
(D Note
Driving without valve stem
caps can cause damage to
the tire valves. To prevent
this, always make sure that
factory installed valve stem
caps on all wheels are secure­
ly mounted on the valve.
@ For the sake of the environment
Underinflated tires will also
increase the fuel consump­
tion.
Tires and vehicle load limits
There are limits to the amount
of load or weight that any vehi­
cle and any tire can carry. Ave­
hicle that is overloaded will not
handle well and is more diffi­
cult to stop. Overloading can not only lead to loss of vehicle
control, but can also damage
important parts of the vehicle
...

258 Tires and wheels
Accordingly, when the low tire pressure tell­
tale illuminates, you should stop and check
your tires as soon as possible, and inf late
them to the proper pressure. Driving on a sig­ nificantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-in­
flation also reduces fuel efficiency and tire
tread life, and may affect the vehicle's han­
dling and stopp ing ability.
Please note that the TPMS is not a subst itute
for proper tire maintenance, and it is the driv­
er's responsib ility to ma inta in correct tire
pressu re, even if under- inflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your veh icle has also been equ ipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale . When the sys­
tem detects a malfunction, the te lltale will
f lash for approximately one minute and then
remain cont inuous ly illuminated. This se­
quence will continue upon subsequent vehicle
start-ups as long as the ma lfunction ex ists .
When the malfunct ion indicator is illuminat­
ed, the system may not be able to detect or
signal low t ire pressure as intended. TPMS
malfunctions may occur for a variety of rea­
sons, includ ing the installat ion of replace­
ment or a lternate tires or whee ls on the veh i­
cle that prevent the TPMS from functioning
p rop erly. Always check the TPM S malf unct ion
tellta le after replacing one o r more t ires or
wheels on your vehicle to ensure that the re­ p lacement or a lternate tires and wheels allow
the TPMS to continue to function properly. Tire pressure indicator appears
App lies to vehicles : wi th tire p ress ure mo nito rin g system
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. 194 Display: u nde rinfla tion warning
Using the ABS sensors, the tire pressure moni­
toring system compares the tire tread circum­
ference and vibration characteristics of the in­
dividua l tires.
If the pressure decreases in one
or more t ires, this is indicated in the instru­
ment cluster with a
RI] war ning symbol and a
message¢
fig . 194 . The driver message in the
display goes out afte r 5 seconds . The driver
message can be displayed again by pressing
the
ISETI button. If o nly one tire is affec ted,
the display will ind icate its position.
The tire pressure monitoring system must be
reset via rad io or MMI* each time the pres­
sures are adjusted (e.g. when switching be­
tween partial and full load pressure) or after
changing or replacing a tire on your ve hicle
¢
page 259. The TPMS indicator only moni ­
tors the tire pressure that you have previous ly
stored. You can find the recommended tire
pressures for your vehicle on the label on driv­
er's side 8-pillar ¢
page 234.
Tire tread circumference and vibration charac­
teristics can change and cause a tire pressure
warning if:
- the tire pressure in one or more tires is too
low,
- the tir e has structural damage,
- the tir e pressure was changed, wheels rotat-
ed or rep laced but the TPMS was not reset
¢page 259, ..,_

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,...., ..,., ,....,
-the spa re tire* /inflatable spare tire* is
mounted.
Warning symbols
[IJ Loss of pressure in at least one tire¢,&. .
Check the tire or tires and replace or repair if necessa ry. The indicator light
[IJ in the instru ­
ment cluster also illuminates
¢page 13.
Check/correct the pressures of all four tires
and resetTPMS via radio or MMI*.
mm (T ire Pressure Monitoring System) Ti re
pre ssure: S ystem m alfuncti on!.
1tE appea rs after sw itching the ign it ion on
or while d rivi ng and the ind icator light
[IJ in
the instrument cluster blinks for approxi­ mately one minute and then stays on, there is
a system malfunction. Attempt to store the
correct t ire pressure ¢
page 259. If the indi­
cator light does not turn off or if it turns on
shortly thereafter, immediately drive your ve­
h icle to an authorized Audi dealer or author­
ized repair facility to have the malfunction
corrected.
.&, WARNING
- If the t ire pressure indicator appears in
the instrument cl uster d isplay, one or
more o f your tires is significantly under­
inflated. Reduce your speed immediately
and avoid any hard steering or braking
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~
page 234 . Driving on a
significantly under-inflated tire ca uses
the tire to overhea t and can lead to tire
failure. Under-inflation also is likely to impair the vehicle 's handling and stop ­
ping ability.
- The driver is responsible for mainta ining
the correct tire pressures. You must check the tire pressures regularly .
- Under certain cond itions (such as a spor ­
ty driving style, winter conditions or un­ paved roads), the pressure monitor indi­
cator may be de layed .
Tire s an d wheel s 259
-Ask your a uthorized Audi dea ler if run­
flat tires may be used on your vehicle.
(D Tips
- The tire pressure mon itoring system may
stop working when there is an ESC ma l­
function.
- Using snow chains may res ult in a system
ma lfunction.
- The tire pressure mon itor ing system on
your Audi was deve loped using tires with
the "AO" or "RO" identification on the
tire s idewall
~ page 248. We recom­
mend us ing these tires.
Reset tire pressure monitoring system
App lies to vehicles: with tire pressure mon itor ing system
If the tire pressure is adjusted, wheels ore ro­
tated or changed, the TPMS must be reset via
radio or MMI*.
... Before storing the new tire pressures, check
that the current pressures on all four tires
correspond to the specified va lues and
adapt the pressures to the current load
¢ page 234.
.,. Switch on the ignition.
.,. Select: the
I CARI funct io n button > Tir e pre s­
s ure mon itoring
> Store now . Or
.,. Select: the
I CARI fu nct ion button > Car sy s­
tem s*
contro l button > S erv icing & che cks >
Tire pres sure mon itor in g > Store tire pre s­
s ures
> Yes, sto re now .
(D Tips
Do not store the tire pressure if there are
snow chains on the tire . Otherwise, a sys­
tem mal function may occur.
•
•

262 What do I do now ?
• Always store the vehicle tool kit, the jack *
and the replaced tire in the luggage com­
partment ¢
page 132.
Stowing the infl atable spare tir e
• Release the air by unscrew ing the va lve
stem.
• Screw the valve stem back in afterwards.
• Wait a few hours before p lacing the wheel in
the spare wheel well¢.&_ .
• Secure the wheel with the large screw.
• Fold the cargo floor back down.
Aft er usi ng th e inflat able sp are wh eel
The inflatable spare tire can be re-used as
long as it is not damaged and is not worn
down to the tread wear indicators¢&. .
When you let the air out of the inflatable
spare tire, it does not assume its folded shape
again for several hours . Until then, it cannot
be p laced back in the spare wheel well and
stowed securely .
A WARNING
-Never use the spare tire if it is damaged
or if it is worn down to the tread wear in­
dicators.
- If the inflatable spare tire is more than 6
years old, use it only in an emergency and w ith extreme caut ion and caref ul
dr iv ing .
- The inflatable spare tire is intended only
for temporary and short-term use.
It
should be replaced as soon as possible
with the norma l wheel and tire.
- T he tire pressure value for the inflatable
spare t ire is located on the drive r's side
8 -pilla r
¢page 234, fig. 190.
-Maximum perm iss ible speed is SO mph
(80 km/h).
- Avoid full-throttle acce le rat ion, heavy
braking, and fast corner ing.
- When the air is let out of the inflatable
spare wheel, it does not ass ume its fold­
ed shape for severa l hours. Until t hen, it
cannot be p laced back in the spare wheel
we ll and stowed secu rely . -
Never drive with more than one inflata­
ble spare tire.
- For technical reasons, the use of tire
chains on the inflatable spare tire is not
perm itted. If it is necessary to drive with
tire chains, the inflatab le spare wheel
must be mounted on the rear axle in the
event of a f lat in a front tire . The newly
availab le rear whee l must then be instal­
led in place of the front whee l with the
f lat t ire. Instal ling the tire chain before
mount ing the wheel and tire is recom­
mended .
- L oose items in the passenger compart­
ment can cause serious personal injury
during hard braking or in an accident.
Never store the inflatable spare tire or
jack* and too ls in the passenger com­
partment.
(D Note
- The inflatable spa re tire has been deve l­
oped specifically for this vehicle mode l.
It must not be exchanged or used for
other vehicle models. Sim ilarly, inflata­
ble t ires from other vehicle models must
not be used.
- Normal summer or w inter tires must not
be installed on the inflatable t ire rim.
Inflating inflatable
spare tire
Applies to veh icles: w ith inflatable spare t ire
F ig. 199 Lu gg age compart ment: co mpressor
• Remove the cover for the veh icle tools and
remove the compressor. For some vehicle
models, the compressor is located i n a hold-
er under the spare tire . .,.

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~ Unscrew the va lve stem from the s pare tire .
~ Screw the tire filler hose from the compres­
sor firm ly onto the valv e of the spare tire.
~ In se rt the p lug from the compress or into a
socket of the vehicle¢
page 66.
~ Switc h the compressor on .
~ Let the compressor run until the valu e speci­
fied on the tire pressure label is reached ¢
page 234, fig . 190. Sw itch the compres­
so r off afte r runn ing for 12 minutes at the
most -danger of overhea ting!
A WARNING
The compressor and the tire filler hose can
become extremely hot while they are run­
ning -danger of burns!
(D Note
Switch the compressor off after running
for 12 minutes at the most -danger of
overheating! Allow the compressor to cool
down for a few minutes before you use it
again.
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger' s safety when chang­
ing a wheel .
~ After you experience a tire fa ilure, pu ll the
ca r well away from moving traffic and try to
r e ach
level gro und before yo u stop ¢ LI)..
~ All p assengers sho uld leave the car and
move to a safe loca tion (for instance, beh ind
the guardrai l) ¢
A .
~ Engage the parking brake to prevent your
vehicle from ro lling un intentionally ¢
A.
~ Shift into 1st gear on vehicles with manua l
transmission, o r move the
selector lever to
the P po sition
on veh icles with au toma tic
t ransmission .
~ If you are tow ing a tra ile r: u nhi tch the trail­
er from your veh icle.
~ T ake the jack ¢ page 260 and the spare tire
¢ page 261 out of the luggage compart ­
ment.
What do I do now? 263
A WARNING
You or your passengers could be injured
while c hanging a wheel if you do not fo l­
low these safety precaut ions:
- If you have a flat tire, move a safe d is­
tance off the road . T urn off the engine,
tur n the eme rg ency flashers on and use
other wa rn in g devices to a le rt othe r mo­
torists.
- Ma ke sur e that passengers wait in a safe
p lace away from the vehicle and well
away from the ro ad and traffic.
- T o help prevent the vehicle from moving
suddenly and possib ly sli pping off the
j a ck, alw ay s fu lly se t the par king br ake
an d block the wheel d iagonally opposi te
the whee l be ing changed w ith the fol d­
ing chocks or other objects. When one
front wheel is lifted off the ground, plac­ ing the Automatic Transmission in "P"
(Park) will
not prevent the vehicle from
moving .
- Before you change a wheel, be sure the
grou nd is level and firm. I f necessary,
use a sturdy board unde r the jack .
- Always sto re the vehicle tool kit, the
jack* and the replaced tire in the luggage compa rtment
¢page 132.
(D Note
If you are changing the whee l on a steep
i ncline, use a rock or s imilar object to
block the opposite whee l to prevent the
vehicle from moving.
(D Tips
Obey all laws.
Changing a wheel
When you change a wheel , follow these­
quence described below step-by-step and in
exactly that order .
l. Remove the decorative wheel cover* or
-
the wheel bolt caps* . For more details see..,.
•
•

264 What do I do now?
also ¢ page 264, Decorative wheel cov­
ers
or ¢ page 264, Wheels with wheel
bolt caps.
2 . Loosen the wheel bolts ¢ page 265.
3. Locate the proper mounting point for the
jack and align the jack below that point
¢ page 265.
4. Lift the car with the jack¢ page 265 .
5. Remove the wheel with the flat tire and
then install the
spare tire¢ page 266 .
6 . Tighten all wheel bolts lightly.
7 .
Lower the ve hicle with the jack .
8 . Use the wheel bolt wrench and
firmly
tighten all whee l bolts in a crisscross pat­
tern
¢ page 265.
9. Replace the decorative wheel cover* or
the
wheel bolt caps* .
A WARNING
Always read and follow all WARNINGS and
information
¢ .&. in Raising the vehicle on
page
266 and ¢ page 267.
After changing a wheel
A wheel change is not complete without the
doing the following .
.,. Always store the vehicle tool kit, the jack*,
and the replaced tire in the l uggage com­
partment ¢
page 132 .
.,. Check the tire pressure of the spare tire as
soon as possible .
.,. As soon as possible, have the
tightening
torques
on all wheel bo lts checked with a
torq ue wrench . The correct tightening tor­
que is 90
ft lbs. (120 Nm).
.,. Have the flat tire
replaced as soon as possi­
ble .
(j) Tips
-If you notice that the whee l bolts are
corroded and difficult to turn while
changing a t ire, they should be replaced
before you check the tighten ing torque.
- Drive at reduced speed until you have the
tightening torques checked .
Decorative wheel covers
Applies to vehicles: with decorative whee l covers
The decorative wheel covers must be removed
first to access the wheel bolts .
Fig. 200 C ha ng in g a w hee l: removing th e w heel cover
Removing
.,. Insert the hook provided with the vehicle
tool kit in the hole in the hub.
.,. Pull off the
decorative wheel cover
qfig. 200.
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
screwed .
Fig. 201 Changing a wheel: removing t he wheel bolt
caps
Removing
.,. Push the plastic clip provided with the vehi­
cle tool kit over the wheel bolt cap until it
engages.
.,. Pull on the
plastic clip to remove the cap
qfig. 201.