wheel size AUDI TT COUPE 2017 Owners Manual

Intelligent Technology
Intelligent Technology
Electronic stabilization
control (ESC)
Description
Electronic Stabilization Control (ESC) supports
driver safety.
It reduces the risk of slipping and
improves driving stability. ESC detects critical sit­
uations such as the vehicle oversteering and un­
dersteering or the wheels are spinning. The vehi­
cle is stabilized by applying the brakes or reduc ­
ing engine torque. When ESC engages, the
G1 in­
dicator light blinks in the instrument cluster.
The following systems are integrated in the ESC:
Anti-lock braking system (ABS)
ABS prevents the wheels from locking when brak­
ing. The vehicle can still be steered even during
hard braking. Apply steady pressure to the brake
pedal. Do not pump the pedal. A pulsing in the
brake pedal indicates that the system is acting to
stabilize the vehicle .
Brake assist system
The brake assist system can decrease braking dis­
tance. It increases braking power when the driver
presses the brake pedal quickly in emergency sit­
uations . You must press and hold the brake pedal
until the dangerous situation is over .
Anti-slip regulation (ASR)
ASR reduces engine power when the drive wheels
begin spinning and adapts the force to the road
conditions. This makes it easier to start, acceler­
ate and drive up hills .
Electronic differential lock (EDL)
EDL applies the brakes to a wheel that starts
spinning and transfers the drive power to the
other driving wheels. This function is not availa­
ble at higher speeds.
In extreme cases, EDL automatically switches
off
to keep the brake on the braked wheel from over­ heating. The vehicle is still working correctly. EDL
will switch on again automatically when condi­
tions have returned to normal.
88 Steering
recommendation
The ESC helps to stabilize the vehicle by changing
the steering torque.
Selective wheel torque control
Selective wheel torque control is used when driv­
ing on curves. The front whee l on the inside of
the curve or both wheels on the inside of the
cu rve are braked selectively as needed. This al­
lows more precise driving in curves. The applica ­
ble system may not activate when driving in wet
or snowy conditions.
A WARNING
- The ESC and its integrated systems cannot
overcome the limits imposed by natural physical laws. This is especially important
on slippery or wet roads. If the systems be­
gin acting to stabilize your vehicle, you
should immediately alter your speed to
match the road and traffic conditions. Do
not let the increased safety provided tempt
you into taking risks. This could increase
your risk of a collision .
- Please note the risk of a collision increases
when driving fast, especially through curves
and on slippery or wet roads, and when driv­ ing too close to objects ahead. The ESC and
its integrated systems cannot always pre­
vent collisions -there is still a risk of acci­
dents!
- Press the accelerator pedal carefully when
accelerating on even, slippery surfaces such
as ice and snow. The drive wheels can spin
even when these control systems are instal­
led and this can affect driving stability and
increase the risk of a collision.
(j) Tips
-The ABS and ASR only function correctly
when all four wheels have a similar wear
condition. Different tire sizes can lead to a
reduction in engine power.
- You may hear noises when the systems de­
scribed are working.

Voice recognition system
Voice recognition system Operating
Applies to: vehicles with vo ice recognition system
You con operate many Infotainment functions
conveniently by speaking.
Req uirement: the ignition and the MM I must be
sw itched on, there m ust be no p hone call in p rog­
ress and the park ing system must not be active .
... Switching on : briefly press the~ but ton @
¢page 21, fig. 10 on the mu ltifunction stee r­
ing whee l an d say the desired command after
the
Beep .
... Switching off :
press and hold the l2!J button.
Or: say the command C ancel.
.., Pause :
say the command Pause . To resume,
press the
l2!I button .
... Corre cting : press the ~ button one t ime
@ ¢
page 20, fig. 8. Or: say the command Cor­
r ec tion .
Input assistance
The system gu ides you through the input with
visual and audio feedback .
-Visual input assistance : after switching on
vo ice recognit ion, a display with a se lection of
poss ible commands appea rs. The command
display can be sw itched on/off under
I M ENU !>
Setting s> left control bu tton > MMI setting s>
Speech dialog sy stem .
-Audio input as sistance :
to have the poss ible
comma nds read, press the
10, I button on the
mul tifunction steering wheel briefly and say
Help .
For the syst em to understand you:
Speak clearly and dist inctly at a normal volume .
Speak louder when d riving faster .
Emphasize the words in the commands evenly
and do not leave long pauses .
Do not speak a command when the voice recogni­
tion system is making an announcement .
Close the doors, the windows and the sunroof* to reduce bac kground noise. Make sure t hat passen-
108
gers are not speaking when you are giv ing a voice
command .
Only use the system from the dr ive r's seat be­
c au se the hands free microphone is direc ted to­
ward that seat .
Additional settings
See¢ page 179, Voice recognition system .
&_ WARNING
-Dire ct yo ur full attention to dr iv ing. As the
d river, you have complete responsibili ty fo r
safety in traff ic. Only use the functions in
such a way that you a lways maintain com­
p lete contro l over your vehicle in all traffic
situations .
- Do not use the voice recognition system i n
emergencies beca use your voice may change
in stressful s ituations. It may take longer to
dia l the number or the system may not be
ab le to dia l it at all. Dial the emergency
number manually.
(D Tips
- The d ia log pauses when there is an incom­
ing phone call and will continue if you ig­
nore the call. The dia log ends if you answer
the ca ll.
- There are no navigation prompts* when a di­
alog is act ive .
- You can select an item in the list using ei­
ther the vo ice recognit ion system or the
cont rol knob .
Command overview
information
Applies to: vehicles with voice recognition system
The following overv iews des cribe the commands
t h at can be used to operate t he M MI using the
vo ice recognit ion system.
Alternative commands are separated using a"/",
fo r example say:
Telephone / (or) Navigation /
(or) Radio.
Sequences of commands used to perform an ac­
tion are ident ified w ith a
"> ", fo r example say:
Enter addre ss > (then) Enter country /state . II>

Airbag syste m
impact, veh icle speed, etc. The front airbags will
also not inflate in side or rear co llisions, or in
roll -overs.
A lwa ys re memb er: Airbags will deploy only once,
and only in certain kinds of coll isions. Your safety
be lts are always there to offer protection in those
situations in which airbags are not supposed to
deploy, or when they have already deployed ; for
example, when your vehicle strikes or is struck by
another vehicle after the first collision .
This is just one of the reasons why an airbag is a
supp lementary restraint and is not a substitute
for a safety belt. The a irbag system works most
effectively when used with the safety belts.
Therefore, always properly wear your safety belts
c::> page 189 .
A WARNING
Sitting too close to the steering whee l o r i n­
strument panel will decrease the effective­
ness of the airbags and will increase the risk
of persona l injury in a co llision.
- Never sit closer than 10 in (25 cm) to the
steering wheel or instr ument pane l.
- If you cannot si t mo re than 10 in (25 cm)
from the steering wheel, inves tigate wheth­
er adaptive equipment may be avai lab le to
held yo u reach the pedals and increase your
seating distance from the steering wheel.
- If you are unrestrained, leaning forward, s it­
ting sideways or out of position in any way,
your risk of injury is much higher.
- Yo u will also receive serious injuries and
could even be killed if you are up aga inst the
airbag or too close to it when it inflates -
even with an Advanced Airbag.
- To reduce the risk of injury when an airbag inflates, always wear safety belts properly
¢ page 193, Safety belts .
-Always make certain that chi ldren age 12 or
younger always ride in the rear seat. If chil­ dren are not properly restra ined, they may
be severely injured or k illed when an airbag
inflates .
- Never let children ride unrestrained or im­ prope rly rest ra in ed in the vehicle . Adjust the
front seats properly .
198
-
-Never ride with the back rest recl ined.
-Always sit as far as possible from the steer -
ing wheel or the instrument panel
¢ page 181.
-Always sit upright with your back against
the backrest of your seat.
- Never p lace your feet on the instrument
panel or on the seat . Always keep both feet
on the floor in front of the seat to help pre­
vent serious injur ies to the legs and hips if
the airbag inflates.
- Never recl ine the front passenger's seat to
transport objects. Items can also move into
the area of the s ide a irbag or the front air­
bag during brak ing or in a sudden maneu ­
ver. Objects near the airbags can become proje cti les and cause injury when an airbag
inflates.
A WARNING
A irbags that have deployed in a crash m ust be
replaced.
- Use o nly orig inal eq uipment airbags ap­
p roved by A ud i and inst alled by a trained
technician who has the ne cessary tools and
diagnostic equipment to properly replace
any airbag in yo ur vehicle and assure system
effectiveness in a crash.
'
- Never permit salvaged or recycled airbags to
be installed in your vehicle .
Child restraints on the front seat - some
important things to know
.,. Be sure to read the important informat ion and
head the WARNINGS fo r important details
about c hildren and Advanced A irbags
c::> page 221 .
Even though your veh icle is equipped w ith an Ad ­
vanced Airbag Sys tem, make certa in that a ll chil­
dre n, especia lly those 12 yea rs and younger, al­
ways ride i n the b ack seat prope rly res trained fo r
their age and size. The airbag on the passenger
s ide makes the front seat a potentially dange rous
place for a child to r ide . The front seat is not the
safest place for a chi ld in a forward-fac ing chi ld ...,.

Airbag system
A WARNING
Objects between you and the airbag will in­
crease the risk of injury in a crash by interfer­
ing with the way the airbag unfolds and/or by
being pushed into you as the airbag inflates.
- Always make sure nothing is in the front air-
bag deployment zone that could be struck
by the airbag when it inflates.
- Objects in the zone of a deploying airbag
can become projectiles when the airbag de­
ploys and cause serious personal injury.
- Never hold things in your hands or on your
lap when the vehicle is in use .
-
-Never place accessories or other objects
(such as cup holders, telephone brackets,
note pads, navigation systems, or things
that are large, heavy, or bulky) on the doors;
never attach then to the doors or the wind­
shield; never place them over or near or at­
tach them to the area marked .,AIRBAG" on
the steering wheel, instrument panel or the
seat backrests; never place them between
these areas and you or any other person in
the vehicle.
- Never attach objects to the windshield
above the passenger front airbag, such as
accessory GPS navigation units or music players. Such objects could cause serious in­
jury in a collision, especially when the air­ bags inflate.
- Never recline the front passenger seat to transport objects. Items can also move into
the deployment area of the side airbags or
the front airbag during breaking or in a sud­
den maneuver. Objects near the airbags can
fly dangerously through the passenger com­
partment and cause injury, particularly
when the seat is reclined and the airbags in­
flate.
A WARNING
A person on the front passenger seat, espe­ cially infants and small children, will receive
serious injuries and can even be killed by be­
ing too close to the airbag when it inflates.
- Although the Advanced Airbag System in
your vehicle is designed to turn off the front
202
passenger airbag if an infant or a small child
is on the front passenger seat, nobody can
absolutely guarantee that deployment un­
der these special conditions is impossible in
all conceivable situations that may happen
during the useful life of your vehicle.
- The Advanced Airbag System can deploy in accordance with the "low risk" option under
the U.S. Federal Standard if a child that is
heavier than the typical one-year old child is
on the front passenger seat and the other
conditions for airbag deployment are met.
- Accident statistics have shown that children
are generally safer in the rear seat area than
in the front seating position.
- For their own safety, all children, especially
12 years and younger, should always ride in
the back properly restrained for their age
and size .
Advanced front airbag system
Your vehicle is equipped with a front Advanced
Airbag System in compliance with United States
Federal Motor Vehicle Safety Standard (FMVSS)
208, as well as Canada Motor Vehicle Safety
Standard (CMVSS)
208 as applicable at the time
your vehicle was manufactured .
The front Advanced Airbag System supplements
the safety belts to provide additional protection
for the driver's and front passenger's heads and upper bodies in frontal crashes . The airbags in­
flate only in frontal impacts when the vehicle de­
celeration is high enough.
The front Advanced Airbag System for the front
seat occupants is not a substitute for your safety belts. Rather, it is part of the overall occupant re­
straint system in your vehicle. Always remember
that the airbag system can only help to protect
you, if you are sitting upright, wearing your safe­
ty belt and wearing it properly. This is why you
and your passengers must always be properly re­
strained, not just because the law requires you to be.
The Advanced Airbag System in your vehicle has
been certified to meet the "low risk" require-
ments for 3 and 6 year-old children on the ..,.

co
co
.... N
" N .... 0
0
Vl c:o
rear seating position and have the airbag
system inspected by your authorized Audi
dealer.
- Always buckle the child seat firmly in
place even if a child is not sitting in it. A
loose child seat can fly around during a
sudden stop or in a collision.
- Always read and heed all WARNINGS
whenever using a child restraint in a vehi­
cle
c!;> page 189, Safety belts, c!;> page 197,
Airbag system
and c!;> page 221, Impor­
tant information.
{D) Tips
Always replace child restraints that were in­
stalled in a vehicle dur ing a crash. Damage to
a child restraint that is not visible could cause
it to fail in another collision situation.
Advanced front airbag system and children
Your vehicle is equipped with a front "Advanced
Ai rbag System" in compliance with United States
F edera l Motor Vehicle Safety Standard ( FMVSS)
208 as applicable at the time your vehicle was manufactured.
The Advanced Airbag system in your vehi cle has
been certified to meet the "low-risk" require­
ments for 3- and 6-year old children on the pas­
senger side and small adults on the driver side.
The low risk deployment criteria are intended to
reduce the risk of injury through interaction with
the airbag that can occur, for example, by being
too close to the steering wheel and instrument
panel when the airbag inflates. In addition, the
system has been certified to comply with the
"s uppress io n " req uiremen ts of the Safety Stand­
ard, to turn of f the front airbag for infants up to
12 months who are restrained on the front pas­
senger seat in chi ld restraints that are listed in
the Standard.
E ven though your vehicle is equipped with an Ad­
vanced Ai rbag system, all children, especially
those 12 years and younger, should always r ide
in the back seat properly restrained for their age
and size. The airbag on the passenger side makes
the front seat a potentially dangerous place for a
Child safety
child to ride. The front seat is not the safest place
for a chi ld in a forward-facing chi ld safety seat . It
can be a very dangerous place for an infant or a
larger ch ild in a rearward-facing seat.
T he vehicle's Advanced A irbag System has a ca­
pacitive passenger detection system in the front
passenger seat cushion that can detect the pres­
ence of a baby or a ch ild in a child restraint sys­
tem on this seat.
The capacitive passenger detection system regis­
ters the changes that result in an electrical field
when a child, a child restraint, and a baby b lanket
are on the front passenger seat. The change in
the measured capacitance due to the presence of
a child, a ch ild restraint, and a baby blanket on
the front passenger seat is related to the child
restraint system resting on the seat . Th e meas­
ur ed capacitance of a child restraint system var­
ies depending on the type of system and specific
make and mode l.
T he elect rical capacitance of the various types,
makes, and models of child restra in ts specified
by the U.S .National Highway Traff ic Safety Ad­
ministration (NHTSA) in the relevant safety
standard are stored in the Advanced Airbag Sys­
tem control unit together with the capacitances
typ ica l of infants and a 1-year old child. When a
child restraint is used on the front passenger
seat w ith a typical 1 year -old infant, the Ad­
vanced Airbag System compares the capacitance measured by the capacitive passenge r detection
system with the data stored in the electronic con­
trol unit.
Child restraints and Advanced front airbag
system
Regardless of the ch ild restraint that you use,
make sure that it has been certified to meet Unit­
ed States Federal Motor Vehicle Safety Standards
and has been certified by its manufacturer for
use with an a irbag. Always be sure that the child
r estra int is properly installed at one of the rear
seating positions.
If in except ional circumstances
you must use it on the front passenger seat, care­
f ully read all of the information on child safety
and Advanced Airbags and heed all of the .,.
223

Wheels
(D Tires for passenger vehicles
(if applicable)
P indicates a tire for a passenger
vehicle. T indicates a tire desig­
nated for temporary use.
@ Nominal width
Nominal width of the tire be­
tween the sidewalls in millime­
ters. In general: the larger the
number, the wider the tire.
@ Aspect ratio
Height/width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Size of the rim diameter in inches.
@ Load index and speed rating
The load index indicates the tire's
load-carrying capacity.
The speed rating indicates the maximum permitted speed
¢ & in
Winter tires on page 2
70.
"EXTRA LOAD", "xl" or "RF" indi­
cates that the tire is reinforced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
up to 93 mph (150 km/h)
Q up to 99 mph (160 km/h)
256
Speed rat- Maximum permitted speed
Ing
R
up t o 106 mph (170 km/h)
s up to 110 mph (180 km/h)
T up to 1 18 mph (190 km/h)
u up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)al
z above 149 mph (240 km/h)al
w up to 168 mph (270 km/h)al
y up to 186 mph (300 km/h)al
a) For tires above 149 mph (240 km/h),
tire manufacturers sometimes use the
code "ZR".
(j) US DOT number (TIN) and
manufacture date
The manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire):
DOT ... 2216 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2016.
@ Audi Original equipment
tires
Audi Original equipment tires
with the designation "AO" have
been specially matched to your
Audi. When used correctly, these
tires meet the highest standards
for safety and handling. An au­
thorized Audi dealer or author­
ized Audi Service Facility will be

Wheels
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead.
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated
size that has not been driven for more than a couple of miles (kilo­
meters) at low speeds in the
three hour per iod before the tire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
c lud ing the maximum capacity of
fuel, oil, and coolant, air condi­
tioning and additional weight of
optiona l equipment .
Extra load tire
means a tire designed to operate
at highe r loads and at h igher in­
flation p ressures than the corre ­
sponding standard t ire. E xtra load
tires may be identified as "XL",
2 58
"xl" "EXTRA LOAD" or "RF" on , ,
the sidewall.
Gross Axle Weight Rating
("GAWR")
means the load-carrying capacity
of a s ingle axle system, measured
at the tire-ground interfaces.
Gross Vehicle Weight Rating ("GVWR")
means the max imum total loaded
weight of the vehicle.
Groove
means the space between two ad ­
jacent tread ribs.
Load rating (code)
means the maximum load tha t a
tire is rated to carry for a given in­
flation pressure . You may not find
this informat ion on all tires be­
ca use it is not requi red by law .
Maximum load rating
means the load rating for a tire at
the maximum permiss ible infla­
tion p ressure for that tire.
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
...

Wheels
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the t ire beads are seated .
Rim diameter
means nominal diameter of the
bead seat . If you change your
wh eel size, you will have to p ur­
chase new tires to match the new
rim d iameter .
Rim size designation
means rim diameter and w idth.
Rim width
means nomina l distance between
r im flanges .
Sidewall
means that portion of a t ire be­
twee n the tread and bead .
Speed rating (letter code)
means the speed at which a t ire is
designed to be driven for extend­
ed periods of ti me. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 256 .
You may not find
this information on all tires be­
cause it is not required by law.
The speed rating letter code,
wh ere applicable, is molded on
the tire sidewall and ind icates the
260
maximum permissible road
speeds
¢ A in Winter tires on
page 270 .
Tire pressure monitoring
system *
means a system that detects
when one or mo re of a vehicle's
tires a re underinflated and illumi ­
nates a low tire pressure war ning
telltale .
Tread
means that portion of a tire that
comes into contact wi th the road.
Tread separation
means pulling away of the tread
from the tire carcass .
Treadwear indicators (TWI)
means the project ions wi thin the
pr inc ipal grooves designed to g ive
a visua l indication of the degrees
of wear of the tread . See
¢ page 264, Treadwear indicator
for mo re information on meas ur­
ing tire wear.
Uniform Tire Quality Grading
i s a tire informa tion system devel ­
oped by the Unite d States Nation ­
a l Highway Traffic Safety Admin­
istration (NHTSA) that is designed
to help buyers make re lative
..

Wheel s
Occupant loading and distri­
bution for vehicle normal load
for various designated seat ing
capacit ies
Refer to the tire inflation pres­
sure label for the number of seat­ ing positions . Refer to the table
c:::> table on page 267 for the
number of people that corre­
spond to the vehicle normal load .
New tires or wheels
Audi recommends having all work
on tires or wheels performed by
an authorized Audi dealer or au­
thorized Audi Service Facility.
These facilities have the proper knowledge and are equipped with
the required tools and replace­ ment parts .
.,.. New tires do not yet have the
optimum gripping properties.
Dr ive carefully and at moderate
speeds for the first 350 miles (500 km) with new tires.
.,.. Use tires of the same construc­
tion, size (rolling circumference)
and as close to the same tread
pattern as possible on all four
wheels .
.,.. Do not replace tires individually.
At least replace both tires on the same axle at the same time.
262
.,.. Audi recommends that you use
Aud i Orig inal Tires. If you would
like to use different tires, please
note that the tires may perform
diffe rently even if they are the
same size
c:::> &. -
.,.. If you would like to equip your
vehicle with a tire/rim combina ­
tion that is different from what
was installed at the facto ry, con ­
sult with an authorized Audi
dealer or authorized Audi Service
Facility before making a pur­
chase
c:::> & -
The spare tire* is different from the regular tires installed on the
vehicle -for example, if winter
tires or wide t ires are installed -
so only use the spare tire* tempo ­
rarily in case of emergency and
drive carefully while it is in use . It
should be replaced with a regular
tire as soon as possible.
On
all wheel drive vehicles, all
four wheels must be equipped
with tires that are the same brand and have the same construction
and tread pattern so that the
drive system is not damaged by
different tire speeds . For this rea­
son, in case of emergency, only
use a spare tire* that is the same .,..

"'
"' ....
N
" N .... 0 0
"' CX)
circumference as the regular
tires .
8,_ WARNING , -
-Only use tire/rim combina-
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
-For technical reasons, it is not possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you select have enough clearance
to the vehicle. Replacement
tires should not be chosen simply based on the nominal
size, because tires with a dif­
ferent construction can differ greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more
than six years old when abso­
lutely necessary and drive
carefully when doing so.
Wheels
-Do not use run-flat tires on
your vehicle. Using them when
not permitted can lead to ve­ hicle damage or accidents.
-If you install wheel covers on
the vehicle, make sure they al­
low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 197 Tire profile : treadwear indica­
tor
Tire wear
Check the tires regularly for wear .
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear .
-Have an authorized Audi dealer
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
263
..