tire 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.

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Safety belts
General notes
Always wear safety belts!
Wearing safety belts correctly saves lives!
This chapter explains why safety belts are neces­
sary, how they work and how to adjust and wear
them correctly. "' Read all the information that follows and heed
all of the instructions and WARNINGS.
A WARNING
Not wearing safety belts or wearing them im­
properly increases the risk of serious personal
injury and death .
- Safety belts are the single most effective
means available to reduce the risk of serious
injury and death in automobile accidents.
For your protection and that of your passen­
gers, always correctly wear safety belts
when the veh icle is moving.
- Pregnant women, injured, or physically im­
paired persons must also use safety belts.
Like all vehicle occupants, they are more
likely to be seriously injured if they do not
wear safety belts. The best way to protect a
fetus is to protect the mother -throughout
the entire pregnancy.
Number of seats
Your Audi TT Coupe has two seating positions in
the front and two height-limited seating posi­
tions in the rear . Each seating position has a safe ­
ty belt. The rear seat area in your Audi TT Coupe
does not have enough room for passengers of all
sizes. For reasons of safety , no person taller than
4 ft 9 in (S7 in/1.4S m) should ever r ide in the
r ear seat area.
A WARNING
Not wearing safety belts or wearing them im­
properly increases the risk of serious personal
injury and death .
Safety belts
- Never strap more than one person, includ­
ing small children, into any belt. It is espe­
cially dangerous to place a safety belt over
a
child sitting on your lap .
- Never let more people ride in the vehicle
than there are safety belts available.
- Be sure everyone riding in the vehicle is
properly restrained with a separate safety
belt or child restraint .
- Persons taller than 4
ft 9 in (57 in/1.45 m)
as well as children in booster seats who are
too close to the rear window and roof can
suffer severe head and neck injuries when
the rear lid is closed or in a crash.
- The minimum clearance between the pas­ senger's heads and the rear window must
never -under any circumstances -be less
that lin (2.5 cm) when the passengers sit
fu lly upright.
- Always make sure that rea r seat passengers
cannot be struck when the rear lid is closed.
4 Safety belt warning light
Your vehicle has a warning system for the driver
and front seat passenger to remind you about the importance of buckling up.
Fi g. 150 Safety belt warning light in the instrument clus­
ter -enlarged
Before driving off , always:
"' Fasten your safety belt and make sure you wear
it properly.
"' Make sure that your passengers also buckl e up
and properly wear their safety belts.
"' Protect children with a child restraint system
appropriate for the size and age.
189

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 .,..

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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
..

Wheels
the risk of an accident. Read and follow the important safe­
ty precautions in ¢ page 267,
Tires and vehicle load limits.
-The tire must flex more if the tire pressure is too low or if
the vehicle speed or load are
too high. This heats the tire up
too much. This increases the risk of an accident because it
can cause the tire to burst and
result in loss of vehicle con­
trol.
- Incorrect tire pressure in­
creases tire wear and has a
negative effect on driving and
Tire pressure table
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 differ­
ences between this information
and the tire pressures specified
on the label on the driver's side B­
p illar, always follow the spec ifica ­
tion on the B-pillar label
¢ page 265, fig. 198.
266
braking behavior, which in­
creases the risk of an accident.
(D Note
Replace lost valve caps to re­
duce the risk of damage to the
tire valves.
@ For the sake of the environment
Tire pressure that is too low in­
creases fuel consumption.
(D Tips
Audi recommends using the
tire pressure specified for a normal load
¢ table on
page 267
or for a full load
when the vehicle is partially
loaded.
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.

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@ Tips
When using snow chains, it may be useful to
switch on sport mode¢
page 89.
Low aspect ratio tires
Your Aud i is factory-equipped with low aspect ra­
tio tires. These t ires have been thoroughly tested
and been selected specifically for your model for
their supe rb performance, road feel and handling
u nder a va riety of d riving conditions. As k your au­
thor ized Audi dealer for mo re details.
The low aspect ratio of these t ires is indicated by
a numeral of
55 or l ess in the tire's size designa­
tion. The numera l rep resents the rat io of the
tire's sidewall he igh t in relat io n to its tread w idth
expressed in pe rcen tage. Conventional t ires have
a height/w idth rat io of 60 or more .
The performan ce of low -a spe ct-ratio tire s is par­
ticular ly sen sit iv e to improper inflation pre s­
s ur e. It i s therefore import ant that low a spect
ratio tire s are infl ate d to the specified pre ssure
and that the inflation pre ssure i s regularl y
c hecked and mai nta ined . Tir e pre ssure s should
b e che cked at least once a month and alw ay s
before a long tri p ¢
page 265.
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more easi­
ly by impact with potholes, curbs, gullies or
ridges on the road, particularly if the t ire is un­
derinflated .
In order to minimize the occurrence of impact
damage to the tires of your vehicle, we recom­
mend that you observe the follow ing precau­
tions:
- Always maintain recommended inflation pres­
sures. Check your tire pressure every 2,000
miles (3,000 km) and add a ir if necessary .
- Drive carefully on roads with potho les, deep
gul lies or ridges. The impact from driving
t h rough or ove r such obstacles can damage
you r tires. Impact w ith a curb may also cause
damage to your tires.
Wh eel s
- After any impac t, immed iate ly inspect your
tires or have them inspected by the nearest au­ thorized A udi dealer. Replace a damaged tire as
soon as possible.
- Inspect your tires every 2,000 mi les (3,000 km)
for damage and wear. Damage is not a lways
easy to see. Damage can lead to loss of air and
underinflation, wh ic h could eventually cause
tire fa ilure . If you believe that a t ire may have
been damaged, replace the tire as soon as pos­
sible.
- These tires may wear more quickly than others.
- Please also remember that, while these tires
delive r responsive handling, they may ride less
comfortably and make mo re noise than other
choices.
Reduced pe rfo rmance in winter /cold season
conditions
All t ires are des igned for certai n purposes. The
low aspect ratio, ultra h igh performance tires
o rigi na lly installed o n your vehicle are intended
fo r m aximum d ry and wet road per formance and
handling . They are not sui table for co ld, snowy or
icy weather conditions . If you drive under those
circumstances, you should equip yo ur vehicle
with all-season or winter tires, which offer better
tract ion under those conditions. We suggest you
use the recommended snow or all-season tires
specified for your veh icle, or their equivalent.
Refer to¢
page 2 70 for more detailed informa­
t ion regarding winter tires.
Uniform tire quality grading
-T read wear
- Traction AA A 8 C
- Temperature ABC
Quali ty g rades can be fo und whe re applicable o n
the tire side wall between tread sho ulder and
maximum section width
¢page 255, fig. 196 .
For exampl e: Tread wear 200, Traction AA, Tem­
peratu re
A .
All passenger car t ires must conform to Fede ral
Safety Req uirements i n addit io n to these grades . .,,_
271

Wheels
Tread wear
The
tread wear grade is a compara tive ra ting
based on the wear rate of the t ire when tes ted
under contro lled conditions on a specified gov­
ernment test course.
F or examp le, a tire graded 150 would wear one
and one half (11/2) t imes as well on the govern­
ment course as a tire graded 100 .
The rela tive perfo rman ce of t ires depe nds upon
t he act ua l condi tions of their use, howeve r, and
may depart signif icant ly from the norm due to
variations in d riving hab its, service practices and
d ifferences in road characteristics and climate .
T raction
The
tra ction g rades, from highes t to lowes t, are
AA, A, Band
C. T hose gr ades represen t the t ire's
ab ility to stop on wet pavement as meas ured un ­
der controlled conditions on specified govern­ m ent test sur faces of asphalt and conc ret e. A tire
marked C may have poor traction performance
¢ &, .
Temperature The
temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generation of heat and its ability to d iss ipate
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 red uce tire life,
and excess ive temperature can lead to sudden
tire failure ¢&, .
The gra de C corresponds to a leve l of perform­
ance which a ll passenger ca r tires must meet un­
der the Federa l Moto r Vehicle Safety Standard
No. 109. Grades Band A represent higher leve ls
of performance on the laborato ry test wheel than
the m in imum required by law .
A WARNING
-
The traction grade ass igned to this tire is
based on straight -ahe ad braking t ract ion
t e sts, and does not include a ccele rat ion, cor­
nering, hydrop laning o r peak tract ion charac­
teristics .
272
A WARNING
--
The temperat ure grade for th is tire is estab­
lished for a tire that is properly inflated and
n ot overloaded . Excessive speed, underinfla­
tion, o r excessive load ing, either separately or
in comb ina tion, can ca use hea t bu ildu p and
possib le tire f ailure.
A WARNING
Tempe rature g rades apply to tire s th at are
p rope rly inflated and not over o r underinfla t­
e d.
-
Tire pressure monitoring
system
ill General notes
E ach tire, including the spare (if p rov ided),
shou ld be checked monthly when cold and in flat ­
ed to the inflat ion press ure 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 press ure la­
bel, you sho uld dete rm ine the proper t ire infla­
tion press ure for those tires).
As a n added safety feature, your vehicle has been
equipped with a tire pressure mon itor ing system
(TPMS) that illuminates a low tire p ressure tell ­
ta le when o ne or mo re of your tires is s ignificant­
l y unde r-inflated. According ly, w hen the low t ire
pressure tell tale illum ina tes, you sho uld stop and
c h ec k yo ur t ires as soon as possib le, and inf late
t h em to the proper p ressure . Dr iving on a sign ifi ­
cant ly under-inflated tire ca uses the tire to over­
heat and can lead to tire fa ilure. Und er- inflation
also red uces fue l eff iciency and tire tread life,
and may affect the vehicle's handling and stop­
ping ability .
P lease note that the TPMS is not a s ubstitute fo r
proper tire maintenance, and it is the dr iver 's re­
spons ibility to main tain correct t ire pressure,
even if under -in flat io n has not reached the level
to trigge r illumination of the TPM S low t ire pres-
su re te lltale . .,.