2021 AUDI TT wheel size

8S1012721BE
Intelligent Technology



can affect driving stability and increase the
risk of a collision.

@) Tips
— The ABS and ASR only function correctly
when all four wheels have a similar wear
condition. Different tire sizes can lead toa
reduction in motor power.
— You may hear noises when the systems de-
scribed are working.
Sica Re meal
The ESC is automatically switched on when the ignition is switched on.


eS
5 Ss
> 6

Fig. 112 Upper center console: £0 button
The ESC is designed to function in levels. Depend-
ing on the level that is selected, the stabilization
function of the ESC will be limited or switched
off. The amount of stabilization control will differ
depending on the level.
The following examples are unusual situations
where it may make sense to switch sport mode
on in order to allow the wheels to spin:
— Rocking the vehicle to free it when it is stuck
— Driving in deep snow or on loose ground
— Driving with snow chains







You should only switch sport mode on or
switch ESC/ASR off if your driving abilities and
road conditions permit.
— The stabilization function is limited when
sport mode is switched on. The driving
wheels could spin and the vehicle could
swerve, especially on slick or slippery road
surfaces.

Sport mode on ESC/ASR off Sport mode off or ESC/ASR
on
Behavior The ESC and ASR stabiliza- | The stabilization function is | The full stabilization func-
tion functions are limited not available > A\. ESC and _|tion of the ESC and ASR is
SA. ASR are switched off. available again.
Operation Press the [£| button briefly. | Press and hold the |#«| but- | Press the [2] button again.
ton longer than three sec-
onds.
Indicator Biturns on. BBand aa turn on. Baiturns off or J and
lights aa turn off.
Messages Stabilization control (ESC): | Stabilization control (ESC): | Stabilization control
sport. Warning! Limited off. Warning! Restricted (ESC): on
stability stability
TN WARNING —There is no vehicle stabilization when

ESC/ASR are switched off.

@ Tips
fully available.

— If the ESC is limited, switched off, or mal-
functioning, systems with an automatic
braking intervention function may not be
105

Voice recognition system

Voice recognition system
General information
Applies to: vehicles with voice recognition system
You can operate many functions in the vehicle
easily using voice commands.
Using the voice recognition system optimally
> Speak clearly and distinctly at a normal volume.
Speak louder when driving faster.
> Emphasize the words in the commands evenly
and do not leave long pauses.
> Close the doors, the windows, and the power
top* to reduce background noise. Make sure
that passengers are not speaking when you are
giving a voice command.
> Do not direct the vents toward the hands-free
microphone, which is in the roof headliner/on
the driver’s safety belt* near the front interior
lights. For additional information on the safety
belt microphone’, see > page 140.
> Only the driver should speak to the system, be-
cause the handsfree microphone is aimed to-
ward this seating position.

ZA\ WARNING
— Direct your full attention to driving. As the
driver, you have complete responsibility for
safety in traffic. Only use the functions in
such a way that you always maintain com-
plete control over your vehicle in all traffic
situations.
— Do not use the voice recognition system in
emergencies because your voice may change
in stressful situations. The system may take
longer to dial the number or may not be
able to dial it at all. Dial the emergency
number manually.

G) Tips
There are no voice guidance* prompts when a
dialog is active.
Operating
Applies to: vehicles with voice recognition system
Requirement: the ignition and the MMI must be
switched on. A system language supported by
122
the voice recognition system must be set. There
must be no phone calls in progress and the park-
ing aid must not be active.
> Switching on: briefly press the %» button @)
=> page 14, fig. 10 on the multifunction steer-
ing wheel and say the desired command after
the Beep.
> Switching off: press and hold the ™» button,
or:
» Say the command Cancel.
> Pausing: say the command Pause. To resume,
press the ™» button.
> Correcting: press the button one time G)
=> page 12, fig. 6, or:
» Say the command Correction.
Input assistance
The system guides you through the input with
visual and audio feedback.
— Visual input assistance: after switching on
voice recognition, a display with a selection of
possible commands appears. This command
display can be switched on or off. Select:
MENU] button > Settings > left control button
> MMI settings > Speech dialog system.
— Audio input assistance: to have the possible
commands read, press the “9 button on the
multifunction steering wheel briefly and say
Help.


Additional settings
See > page 194, Voice recognition system.
Gi) Tips
—The dialog pauses when there is an incom-
ing phone call and will continue if you ig-
nore the call. The dialog ends if you answer
the call.
— You can select an item in the list using ei-
ther the voice recognition system or the
control knob.

8S1012721BE
Wheels

Tire designations

B8K-2316


Fig. 175 Tire designations on the side-
wall
@ Tires for passenger vehicles
(if applicable)
“P” indicates a tire for a passen-
ger vehicle. “T” indicates a tire
designated 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. Also
see > A in General information
on page 214.
“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)
R up to 106 mph (170 km/h)
S up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
U up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
Vv up to 149 mph (240 km/h)?
Zz above 149 mph (240 km/h)?
w up to 168 mph (270 km/h)®
Y up to 186 mph (300 km/h)?

a) For tires above 149 mph (240 km/h),
tire manufacturers sometimes use the
code “ZR”.
215

8S1012721BE
Wheels

Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto-
matic transmission, power steer-
ing, power brakes, power win-
dows, power Seats, radio, and
heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent.
Numbers of 55 or lower indicate a
low sidewall for improved steer-
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
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 period before the tire pres-
sure is measured or adjusted.
Curb weight
means the weight of a motor ve-
hicle with standard equipment in-
cluding the maximum capacity of
fuel, oil, and coolant, air condi-
tioning and additional weight of
optional equipment.
Extra load tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Extra load
tires may be identified as “XL”,
“xl”, “EXTRA LOAD”, or “RF” on
the sidewall.
217

8S1012721BE
Wheels

Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs.
(2.3 kg) in excess of those stand-
ard items which they replace, not
previously considered in curb
weight or accessory weight, in-
cluding 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 substantially
90 degrees to the centerline of
the tread.
Recommended inflation
pressure
see > page 217, Cold tire infla-
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in-
flation pressures than the corre-
sponding standard tire. Rein-
forced tires may be identified as
“XL”, “xl”, “EXTRA LOAD”, or “RF”
on the sidewall.
Rim
means a metal 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 you change your
wheel size, you will have to pur-
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be-
tween the tread and bead.
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend-
ed periods of time. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h) > table
on page 2715. You may not find
this information on all tires be-
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the >
219

8S1012721BE
Wheels

by the tire manufacturer. This in-
formation is used to contact con-
sumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and lug-
gage load plus 150 lbs. (68 kilo-
grams) times the vehicle's desig-
nated seating capacity.
Vehicle maximum load on the
tire
means that load on an individual
tire that is determined by distrib-
uting to each axle its share of the
maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual
tire that is determined by distrib-
uting to each axle its share of the
curb weight, accessory weight,
and normal occupant weight (dis-
tributed in accordance with > ta-
ble on page 226) and dividing by
two.
Occupant loading and distri-
bution for vehicle normal load
for various designated seating
capacities
Refer to the tire inflation pres-
sure label > page 224, fig. 178
for the number of seating posi-
tions. Refer to the table > table
on page 226 for the number of
people that correspond to the ve-
hicle 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
optimal gripping properties.
Drive carefully and at moderate
speeds for the first 350 miles
(500 km) with new tires.
> Only use tires with the same de-
sign, size (rolling circumfer-
ence), and as close to the same
tread pattern as possible on all
four wheels.
> Applies to: RS models: Only use
tires with the same design, size
(rolling circumference), and the
same tread pattern on all four
wheels.
>Do not replace tires individually.
At least replace both tires on the
same axle at the same time.
221
>

Wheels

> Audi recommends using Audi
Genuine Tires. If you would like
to use different tires, please
note that the tires may perform
differently even if they are the
same size > A.
>If you would like to equip your
vehicle with a tire and rim com-
bination that is different from
what was installed at the facto-
ry, consult with an authorized
Audi dealer or authorized Audi
Service Facility before making a
purchase > A.
Because the spare tire® is differ-
ent from the regular tires instal-
led on the vehicle (such as winter
tires or wide tires), only use the
spare tire* temporarily in case of
emergency and drive carefully
while it is in use. It should be re-
placed with a regular tire as soon
as possible.
Applies to: vehicles with all wheel
drive: 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 dam-
aged by different wheel speeds.
For this reason, in case of emer-
gency, only use a spare tire* that
222
is the same circumference as the
regular tires.

Z\ 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

Ncw dee em -])
Please note that the information
contained in the following table
was correct at the time of print-
ing, and the information is sub-
ject to change. If there are any
differences, you should always
follow the tire pressure sticker
=> page 224, fig. 177.
Make sure that the tire designa-
tion on your tire matches the des-
ignation on the tire pressure label
and the tire pressure table.
The following table lists recom-
mended tire pressures in cold
tires according to the load and
the size of the tires installed.
















226

Model/ Tire designation Tire pressure
Engine Normal load Maximum load
(up to 2 people)
Front Rear Front Rear
PSI | kPA | PSI | kPA | PSI | kPA | PSI | kPA
TT Coupe: 245/40 R18 93H 32 | 220 | 29 | 200 | 33 | 230 | 30 | 210
2.0L 245/40 R18 93Y 32 | 220 | 29 | 200 | 33 | 230 | 30 | 210
4-cylinder 245/35 R19 93Y 35 | 240 | 32 | 220 | 35 | 240 |] 32 | 220
255/30 R20 92Y 35 | 240 | 32 | 220] 36 | 250 | 32 | 220
TTS Coupe: |245/35 R19 93Y 35 | 240 | 32 | 220 | 38 | 260 | 32 | 220
2.0L 255/30 R20 92Y 35 | 240 | 32 | 220 | 39 | 270 | 33 | 230
a-cylinder 245/40 R18 93Y 32. | 220 | 29 | 200 | 33 | 230] 30 | 210
TTRS Coupe: |245/35 R19 93Y 33/ | 230/ | 29 | 200 | 39/ | 270/| 33 | 230
2.5L 362 | 2502 414 | 2808
5-cylinder 255/30 R20 92Y 35 | 240 | 29 | 200 | 39/ | 270/| 33/ | 230/
422 | 2902] 352 | 2408
TT Roadster: |245/40 R18 93H 32 | 220 | 29 | 200 | 33 | 230 | 30 | 210
2.0L 245/40 R18 93Y 32 | 220 | 29 | 200 | 33 | 230 | 30 | 210
a-cylinder 245/35 R19 93Y 35 | 240 | 32 | 220 | 35 | 240 | 32 | 220
255/30 R20 92Y 35 | 240 | 32 | 220] 38 | 260 | 32 | 220
4) The value before the forward slash applies to vehicles with a maximum speed up to
155 mph (250 km/h); the value after the slash is for up to 174 mph (280 km/h).
A WARNING pressure > page 224 and load
Please note the important safe- Units payee”:
ty precautions regarding tire