2015 AUDI A3 change wheel

Smart Technology Notice about data
recorded by vehicle
control modules
Your veh icle is not equipped with an Event Da­
ta Recorde r (EO R), installed by some manu­
facture rs fo r the express purpose o f capturing
data for retr ieval after an accident or cras h
event . EDR's a re sometimes called "crash re ­
corders".
Some state laws res trict the retr ieval or down ­
l oadi ng of data stored by E DR's that were in ­
stalled in a veh icle for the exp ress purpose of
retrieving data after an accide nt or crash
event w ithout the owner's consent.
A lthough yo ur vehicle is no t equ ipped w it h an
EDR, it is equipped with a number of elect ron­
ic control modules fo r various vehicle systems
such as, for examp le, eng ine f unction, em is­
sion control, as well as for the airbags and
safety belt s.
These electronic contro l modules also record
veh icle -re lated data dur ing no rma l veh icle op­
erat ion for d iagnostic and repa ir purposes .
T he recording capacity of the electronic con­
trol modules is limited to data (no sound is re ­
corded) and only a small amount of data is ac­
tually recorded ove r a ve ry limited pe riod of
time and stored when a sys tem faul t or o ther
condition is se nse d by a cont rol u nit. Some o f
the data then stored may re la te to vehicle
speed, dir ect io n, bra king as we ll as restra int
system use and perfo rmance in the event of a
crash or other condit ion. Stored data can only
be read and downloaded w ith special equip­
ment.
Electronic stabilization
control (ESC)
Description
The ESC reinforces driver safety. It reduces
the r isk of slipp ing and improves driving sta ­
b ili ty . E SC detects cr itical s it u ations such as
the veh icle ove rsteer ing and understee ring or
Smart Technolog y 185
th e wheels a re sp inning . The vehicle is stabi ­
li zed by applying the brakes or red ucing en­
gine torq ue. Once the ESC is act ive ly reg ulat­
ing, the
G) i ndicato r light b links in the instru­
ment cluster.
The anti-lock braking system (ABS), brake as­ s ist system, ant i-slip regu lation (ASR), e lec­
tron ic different ia l loc k (EDU, electron ic differ ­
ential lock* (front wheel drive) and se lective
whee l to rque control* (a ll whee l drive) are in­
teg rated in the ESC. The ESC suppo rts the sta­
bilization of the vehicle th rough a change in
t h e s teer ing torq ue.
Anti-lock braking system (ABS)
ABS prevents the whee ls from locking when
braking . The vehicle ca n still be steered even
dur ing ha rd braking. App ly steady pressure to
the b rake peda l. Do not pump the p edal. A
puls ing in the bra ke peda l indicates t hat the
system is acting to st abil ize the ve hicle.
Brake assist system
The brake ass ist system can decrease braking
dis tance. It increases bra king power when the
drive r presses the bra ke peda l quickly in emer­
gency s ituations. Yo u m ust pres s and hol d the
brake pedal unt il the dangerous s it u at ion is
ove r. In vehicles with adap tive c ruise control *,
the b rake assist system is more sensitive if the
distance detected to the vehicle ahead is too
small.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the drive
whee ls beg in spi nning and adapts the fo rce to
the road conditions . This makes it easier to
start, accelerate and dr ive up inclines.
Electronic differential lock (EDL)
The EDL bra kes whee ls tha t a re sp inning and
trans fers the dr ive power to the othe r drive
whee l or w heels if the vehicle is equ ip ped with
a ll w heel d rive*) . This function is availab le up
to approximately 62 mph (100 km/h).
I n extreme cases, EDL au toma tically sw itches
off to keep t he b rake on the bra ked wheel
from overheat ing. The ve hicle is still working .,..
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200 Trailer towing
who is not properly wearing the restraints
provided by Aud i.
Trailer towing tips
Important to know
Your vehicle hand les different ly when tow ing
a trailer because of the additional weight and
different weight distribution. Safety, perform ­
ance and economy wi ll greatly depend on how
carefully you load your trailer and operate
your rig.
Before you actually tow your trailer, practice
turning, stopp ing and backing up in an area
away from traffic. Keep practicing until you have become completely familiar with the way
your vehicle-trailer combination behaves and responds.
Backing up is difficult and requires practice.
Backing up with a trai ler genera lly requires
steering action opposite to that when backing up your vehicle without a trailer.
Maintain a greater distance between your ve­
hicle and the one in front of you. You will need
more room to stop. To compensate for the
trailer, you will need a larger than normal
turn ing radius .
When passing, remember that you cannot ac­
celerate as fast as you normally would be­
cause of the added load. Make sure you have
enough room to pass . After passing, allow
plenty of room for your tra iler before chang­
ing lanes aga in.
Avoid jerky starts, sharp turns or rapid lane
changes .
(D Tips
-Do not tow a tra iler during the break-in
period of your vehicle.
- If you tow a trailer, your Audi may re­
quire more frequent maintenance due to
the extra load
q page 268.
Parking on a slope
Do not park on a slope with a trailer . If it can­
not be avoided, do so only after doing the fol­ lowing:
When parking:
.. App ly the foot brake.
.. Have someone place chocks under both the
vehicle and the trailer wheels .
.,. With chocks in place, slowly release the
brakes until the wheel chocks absorb the
load.
.. Turn the whee ls towards the curb.
.. App ly the parking brake.
.. Select the P selector lever position.
When restarting after parking:
.. Apply the foot brake .
.. Start the engine .
.. Select the D/S selector lever position.
.. Release the parking brake and s lowly pull
out and away from the wheel chocks .
.. Stop and have someone retrieve the wheel
chocks .
(D Tips
If you move the selector lever of the auto­
matic transmission to P before applying
the parking brake and before blocking the
whee ls, you may have to use more force
later to move the lever out of the P posi­
tion.

Gross Vehicle Weight Rating ("GVWR")
means the maximum total loaded weight of
the vehicle .
Groove
means the space between two adjacent tread
ri bs.
Load rating (code)
means the maximum load that a tire is rated
to carry for a given inflat ion pressure . You
may not find this information on all tires be­
cause it is not requ ired by law .
Ma ximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation pressure for that
tire .
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capac ity weight, and
(d) Production opt ions weight
Ma ximum (permissible) inflation pressure
means the maximum co ld inf lation pressure
to which a tire may be inflated . Also called
"maximum inflation pressure."
Normal occupant weight
means 150 lbs. (68 k ilograms) times the
number of occupants seated in the vehicle up
to the tota l seating capacity of yo ur vehicle.
Occupant distribution
means distribution of occupants in a veh icle.
Outer diameter
means the overall diameter of an inflated new
tire .
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing e levations due to labeling, decorations, or
protective bands or ribs .
Tires and wheels 22 7
Ply
means a layer of rubbe r-coated parallel cords.
Production options weight
means the combined weight of those installed
regular production opt ions we ighing over 5
lbs. (2.3 kg) in excess of those standa rd items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim.
Radial ply tire
means a pneumatic tire in which the ply cords
that extend to the beads are laid at substan­
tially 90 degrees to the centerl ine of the
tread.
Recommended inflation pressure
see ~ page 226, Cold tire inflation pressure .
Reinforced tire
means a tire design to operate at higher loads
and at higher inflation pressures than the cor­
responding standard tire . Reinforced tires
may be identified as "XL", "xl", "EXTRA LOAD",
or "RF" on the sidewal l.
Rim
means a metal support for a tire or a tire and
tube assembly upon which the tire beads are
seated .
Rim diamete r
means nominal diameter of the bead seat. If
you change your wheel s ize, you wi ll have to
purchase new tires to match the new r im di­
ameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a tire between the
tread and bead .
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230 Tire s and wheel s
you have stored . The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the tire pressu re monito r­
ing system w ill be impaired if you store nor­
mal load pressures but then operate the vehi ­
cle at its maximum load¢.&. .
See the il lustration¢
fig. 156 for the location
of the label on dr iver's side 8-pillar (color of
the actua l labe l and exact location on the ve­
hicle wi ll vary slightly).
Note that the followi ng tab le is accurate at
the time o f go ing to press and is subject to
Model / Tire de
signation
change. In the event of discrepancies, the t ire
pressure label is located on the driver's side 8-
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflation pressu res for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as original
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A3: 225 /45 Rl 7 91 Y
32 220 29 200 35 240 35 240 1
.8 lit er High P erform ance
4 -cy lind er
22 5/40 R18 92Y XL
Hi gh Perfo rmance
35 240 32 220
35 240
35 240
2
2 5/45 Rl 7 91H
35 240
32 220 39 270 39 270 All S
ea son
2 25 /40 R18 92H XL
35 240 32 220 39 270 39 270 All Season
2 35/35 Rl 9 91 Y XL
32 220 29 200 35 240
35 240 High Performan
ce
C o mp act spar e whe el
60 420 60 420
60 420 60 420 11
25/70 R 18
A 3: 225 /45 Rl 7 91Y
33 230 30 210 36 250 36 250 2.0 liter High Perfo rman ce
4 -cy linder
22 5/40 R18 92Y XL
High Performan ce
33 230 30 210 36 250 36 250
225 /45 R1 7 91H
36 250 33 230 41 280 41 280 All Seaso n
225 /40 R18 92H XL
36 250
33 230 41 280
41 280 All Seaso n
23 5/3 5 R1 9 9 1 Y XL
33 230 30 210 36 250 36 250 High P erformance
C o m pact spa re w heel
60 420 60 420 60 420 60 420 1125 /70 R18
X L= reinf orced or extra lo ad tir e. It m ay als o a ppe ar as x l, EX TRA L OAD , or RF on the ti re side-
wall .

The correct tire pressure for the spare wheel is
l ocated on a label on the driver's side B-pillar.
Because tec hnical changes may be made to
vehicle equ ipment dur ing the model yea r, a l­
ways compa re the tire size designation on the
tire pressure label on your vehicle wit h the
tires on your vehicle . Make s ure that the tire
size information on the veh icle label is the
same as the s ize of the tires on the vehicle.
This is especially important if the vehicle be ­
longs to someone else or you bought the veh i­
cle with different rims/tires or you boug ht the
ve hicle as a previously owned vehicle.
Remember, your safety and that of your pas­
sengers also depends on mak ing su re that
l oad limits are not exceeded. Vehicle load in­
cludes everybody and everything in and on the
veh icle. These load limits are technically refer­
red to as the vehicle's Gross Vehicle We ight
Rating ("GVWR") . The Gross Ax le Weight Rat ­
ing ("GAWR") is the maximum load that can
be app lied at each of the veh icle's two axles.
The Gross Vehicle Weight Rating and the
Gross Axle Weight Rating are listed on the
safety compliance st icker label located on the
driver's side B-p illa r. The t ire pressure label o n
your Aud i lists the maximum combined
weight of a ll of the occupants and luggage or
other cargo that the vehicle can carry. For the
l ocation of the tire pressure labe l~
fig. 156.
A WARNING
Overloading a vehicle can cause loss of ve­
hicle control, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more weight than yo ur vehicle
was designed to carry will prevent the
vehicle from handling properly and in­ crease the risk of a loss of veh icle con­
trol.
- The brakes on a veh icle that has been
overloaded may not be able to stop the
vehicle within a safe distance .
- Tires on a vehicle that has been overload­
ed can fail suddenly causing loss of con­
t rol and a crash.
Tire s an d wheel s 231
-Always make sure that the total load be­
ing transported - includ ing the weight of
a trailer hitch and the tongue we ight of a
loaded trailer -does not make the vehi­
cle heavier than the vehicles Gross Veh i­
cle Weight Rating.
A WARNING
- Inco rrect tire pressures and/or underin­
flation can lead to a ser ious or fatal acci­
dent.
- Inco rrect tire pressures and/or underin­
flation cause increased tire wear and can
affect the handling of the vehicle.
- Inco rrect tire pressures and/or underin­
flation can a lso lead to sudden t ire fail­
ure, including a blowou t and sudden de­
flation, caus ing loss of veh icle contro l.
Checking tire pressure
The correct tire pressure for the tires original­
ly installed on your vehicle is listed on the tire
pressvre label located on driver's side 8-pil ­
lar.
T he recommended tire pressures are on the
ti re pressure label and in the table
~ page 229, Cold tire inflation pressure . This
means that the pressure m ust be checked and
adjusted when the tire has not been dr iven for
more than a couple of miles (kilometers) at
low speeds during the previous three hours.
Air in the tires expands when the tire heats up
as a result of internal frict ion as it flexes in
use. The tire pressure is h igher when the tire
has warmed up t han when it is "cold."
It is the inflation pressure in a "cold" t ire that
counts. Therefore, you should never let a ir out
of a warm tire to match "Cold tire inflat ion
pressure" recommendat io ns ~
page 229 . Th e
ti res wo uld then be unde rinfl ated and co uld
fail suddenly.
T he tire pressure label on your Audi lists the
recommended co ld tire inflation pressures at
max imum capacity for the new, or ig inal
equipment tires that were on your vehi cle at
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-Only when all tires on the vehicle are fi l­
led to the correct pressure, the tire pres­
sure monitoring system can work cor­ rect ly.
- The use of incorrect tire pressure values
can lead to accidents or other damage.
Therefore it is essential that the driver
observe the specif ied tire pressure values
for the tires and the co rrect p ress ures for
the f unction of t he tire pressure mo nitor­
ing system.
- Always inflate ti res to the recommended
and co rrec t tire pressu re befo re d rivi ng
off.
- Drivi ng with under inflated ti res bend
more, letti ng them get too ho t res ulting
in t read separation, sudden t ire fail ure
and loss of control.
- Excessive spee d and/ove rloading can
cause heat bui ld -up, sudden tire fa il u re
and loss of control.
- If the t ire pressure is too low or too high,
the tires w ill wea r prematurely and the
vehicle will not hand le we ll.
- If the t ire is no t flat and you do no t have
to change a w heel imme diate ly, drive at
reduced speed to the nearest service sta­
t ion to check the tire pressure and add
air as required.
(D Note
Driving without va lve stem caps ca n cause
damage to the t ire va lves. To prevent this,
always make s ure that facto ry installed
valve stem caps on all wheels a re secure ly
mounted on the va lve .
@) For the sake of the environment
Underinflated tires will a lso increase the
fue l consumption .
Tires and vehicle load limits
There are limits to the amount of load or
weight that any veh icle and any t ire can carry .
A vehicle that is ove rloaded w ill not ha ndle
well and is more difficult to stop . Overload ing
can no t on ly lead to loss o f vehicle con tro l,
Tire s an d wheel s 233
but can also damage important parts of the
vehicle and ca n lead to sud den tire fai lure, in ­
clud ing a b lowout and s udden def lation that
can cause the vehicle to cras h.
Your safety and that of your passengers also depends on making sure that load limits are
not exceeded . Vehicle load includes everybody
and everything in and on the veh icle. These
load lim its are technically referred to as the
vehicle's
Gross Vehicle We ight Rating
("GVWR ") .
The "GVWR" includes the weight of the basic
vehicle, all factory installed accessories, a full
tank of fuel, o il, coo lant and other fluids plus
maximum load . The max imum load includes
the number of passenge rs that th e vehicle is
i n tended to car ry ("seat ing capa city") wi th an
ass umed we igh t of 150 lbs (68 kg) fo r each
passenger at a designated seating posi tion
and t he tota l weight of any luggage i n the ve­
hicle . If you tow a trai ler, the weight of the
tra iler hitch and the tongue weight of the
loaded tra iler must be included as part of the
vehicle load.
T he
Gro ss Axle Weight Rating ("GAWR") is
the maximum load that can be applied at each
of the vehicle's two axles.
T he Gross Vehicle Weight Rating and the
G ross Axle Weig ht Rating are listed on the
safety comp liance sticker label located on the
driver's side B-pillar. Your Audi has 5 seat ing
pos itions, 2 in the front and 3 in the rea r for
total seating capacity of 5 . Each seating posi ­
t ion has a safety belt
~ page 131, Safety
belts.
The fact that there is an upper limit to your
vehicle's Gross Vehicle Weight Rating means
t h at the total weight of whatever is bei ng car­
ried in the vehicle ( in cl ud ing t he weight of a
t ra ile r hi tc h a nd the tongue we ight of t he
l o ad ed tr ailer) is lim ited. The more p assen­
gers in the vehicle or passengers who are
heavier than the standard weights assumed
mean that less weight can be carried as lug -
gage.
~
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24 4 T ire s and wheel s
signal low tire 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 funct ioning
properly . Always check the TPMS malfunct ion
telltale after replacing one or more t ires or
wheels on your veh icle to ensure that the re­
p lacement or a lternate tires and wheels allow
the TPMS to continue to function properly.
If the Tire Pressure Monitoring System
indicator appears
Applies to vehicles: with tire pressure monitoring 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.
F ig. 161 Ins trumen t cluste r: ind icato r light w it h m es­
s age
Using the ABS sensors, the tire pressure moni­
toring system compa res the tire tread circum­
ference and vibration characteristics of the in­
dividual tires .
If the pressure changes in one
or more tires, th is is indicated in the instru­
ment cluster display with an indicator light
IE and a message ¢ fig. 161 . If only one t ire
is affected, the location of that t ire will be in­
d icated. The message turns off after a few mi­
nutes. You can disp lay the message again
¢ page 28.
The tire pressures must be stored in the menu
d isplay aga in each time the pressures change
(switching between part ia l and full load pres­
sure) or after chang ing or replac ing a tire on
your ve hicle ¢
page 245. The tire pressure
monitoring system on ly monitors the ti re
press ure you have stored . You can find the rec­
ommended tire pressures for your vehicle on the
labe l on the driver's doo r pillar
¢ page 229 .
Tire tread circumference and vib ration charac­
teristics can change and cause a tire pressure
warning if:
- I f the tire pressure in one or more ti res is
t oo low.
- The tire has structural damage.
- The tire was replaced or the t ire pressure
changed and it was not stored again
¢ page 245.
-The spare tire is installed .
Indicator lights
IE -Loss of pressure in at least one tire ¢ .&. .
Check the tires and replace or repair if neces­
sary. Check/correct the pressures of all four
t ires . Then store the t ire pressures in the
menu display
¢ page 245.
Ill (T ire Pressure Monitoring System) T ire
pre ssure: S ystem mal function!. Ifm:!
ap­
pears afte r switching the ignition on or w hile
driv ing and the [ti] indicato r light in the in­
strument cluster b links for app rox imately one
minute and then stays on , the re is system
malfu nction . Check/cor rect the p ress ures of
all four tires and store them¢
page 245. If
t h e indicator lig ht does turn off or tu rns on
again after a short pe riod of time, drive to
your authori zed Aud i dea ler or qualified repair
facility immed iately to have the malfunction
corrected .
A WARNING
--- If the tire pressure ind icator appears in
the instrument cluster display , one or
mo re of your t ires is sign ifi cant ly unde r­
i n flated. Reduce yo ur speed immedi ately
an d avoid any hard steer ing or b rak ing
maneuvers. Stop as soon as possib le and
check the tires and their pressures. In­
f late the tire pressure to the proper pres­
sure as indicated on the vehicle's tire
pressure labe l
¢page 229. Driving on a
significantly under-i nflated tire causes
the t ire to overheat and can lead to ti re
fa ilur e. Unde r-inflation also is li kely to

impair the vehicle's handling and stop­
ping ability.
- The driver is responsible for maintaining
the correct tire pressures. You must
check the t ire pressures regularly.
- Under certain conditions (such as a spor­
ty driving style, w inter condit ions or un­
paved roads), the pressure monitor ind i­
cator may be de layed.
- Ask your authorized dealer if run-flat
tires may be used on your vehicle. You ve­
hicle registrat ion becomes invalid if you
use these tires when not permitted .
Damage to your vehicle or accidents
c ou ld also resu lt.
(0 Tips
- The t ire pressure monitoring system can
also stop work ing when there is an ESC/
ABS malfunction.
- Using snow chains may result in a system malfunction .
- The t ires with the ident ificat ion "AO" or
"RO"¢ page 236 have been matched
with you r A udi tire p ressu re monito ring
system. We recommend that you use
these tires.
- The t ire pressure monitoring system can
on ly mon itor the t ire pressure of the
driving tires . C he ck the tire pressure of
the spare wheel in the luggage compart ­
ment so that if necessary it is ready for
u se .
Storing tire pressures
Applies to vehicles: with tire pressure monitoring system
A change in tire pressure or a change in tires
must be stored in the system.
The ti re p ress ure is s to red in the M MI.
~ Make sure befo re stor ing that the tire pres­
su res of all fou r tires meet the specified val­
ues and a re adapted to the load. Otherw ise
the system co uld mal function ~
page 229.
~ Switch the ignition on.
~ Select : Sys tem s control button or Car sy s­
tems > Servic e
& control > Tire pressure
Tire s an d wheel s 245
monitor > Store tire pre ssure > Ye s, store
now .
(D Tips
Do not s to re the tire pressures if snow
chains a re installed.
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