2018 AUDI TT ROADSTER winter tires

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Assistance systems Speed warning system
Description
App lies to: vehicles with speed warning system
The speed warning system helps you to stay be­
low a specified maximum speed that can be set,
changed or deleted in the Infotainment system .
The speed warning system warns you if you are
exceeding the maximum speed that you have set .
A warning tone will sound as soon as your speed
exceeds the stored value slightly. The
(Ol (USA
models)/
(01 (Canada models) indicato r light
and a message appear i n the ins trumen t cluster
d isplay at the same time. The
(Sl (USA models)/
(O] (Canada models) indicator light and the mes ­
sage turn off when the ve hicle speed drops below
the stored maximum speed.
Sett ing a threshold is recommended if you would
like to be reminded when you reach a certain
maximum speed . Situations where you may want
to do so include driving in a country with a gener­
al speed limit or if there is a specified maximum
speed for winter tires.
Setting the warning thr eshold
.. Se lect in the Infotainment system: ! MENUI b ut­
ton
> Vehicle > left contro l button > Driver a s­
s istan ce
> S peed warning > Manual.
@ Tips
Regard less of the speed warning system, you
should always monitor your speed using the
speedometer and make sure you are following
the legal speed limit.
A ssi st a nce systems
Cruise control system
Switching on
Applies to: vehicles with cruise control system
The cruise control system makes it possible to
drive at a constant speed starting at 15 mph
(20 km/h).
0
f
~
0
Fig . 7 7 Operat ing leve r: cru ise control system
.. To switch t he system on, pull the lever into po-
sition
(D ¢ fig. 77.
.. Drive at the speed to be maintained.
.. To store the speed, press the button @.
T he stored speed and the
@jltJ~i, (USA models) /
l'I (Canada models) ind icator lig ht are d isp layed
in the instrument cluster.
T he speed is maintained by modifying engine
power or through an active brake intervention.
_8 WARNING
---A lways pay attention to the traffic around
you when the cruise control system is in op­
eration. You are always responsible for your
speed and the distance between your vehi­
cle and othe r vehicles.
-For safety reasons, cruise control should not
be used in the city, in stop-and-go traffic, on
w inding roads a nd when road conditions a re
poor (such as ice, fog, g rave l, heavy rai n and
hydroplaning), because this in cr eases the
risk of an acciden t.
-Sw itch the cr uise con trol off tempora rily
when dr iv ing in tu rning lanes, highway exits
or in const ruc tion zones.
-Please no te that uncons ciously "resting"
your foo t on the accelera to r ped al prevents
-
71

Intelligent Technology
snow and ice. Always read and follow safety pre­
cautions
¢ .&. .
Winter tires
By using all wheel drive, your vehicle has good
forward motion with standard tires in winter con­
ditions. However, in winter we recommend using
winter or all season tires on
all four wheels, be­
cause this will improve the
broking effect.
Snow chains
If there are snow chain laws, snow chains must
also be used on vehicles with all wheel drive
c::> page 259, Snow chains.
Replacing tires
For vehicles with all wheel drive, only wheels with
the same rolling circumference should be used .
Avoid using tires with different tread depths
c::> page 251, New tires or wheels.
Offroad vehicle?
Your Aud i is not an offroad vehicle - there is not
enough ground clearance. For this reason, avoid
difficult terrain.
,& WARNING
- Also, in vehicles with all wheel drive, adapt
your driv ing style to the current road and
t ra ffic conditions. Do not let the increased
safety provided tempt you into taking risks,
because this increases the r isk of an acci­
dent.
- The braking ability of your vehicle is limited
to the traction of the wheels. In this way, it
is not different from a two wheel drive vehi­
cle. Do not be tempted to accelerate to a
high speed when the road is slippery, be­
cause this increases the risk of an accident.
- Note that on wet streets, the front wheels
can "hydroplane" if driving at speeds that
are too high. Unlike front whee l drive
vehicles, the engine does not rev higher sud­
denly when the vehicle begins hydroplaning.
For this reason, adapt your speed to the
road conditions to reduce the risk of an acci­
dent.
90
Rear spoiler
Applies to: vehicles with retractable rear spoile r
The extendoble rear spoiler increases driving sta­
bility.
Fig. 95 Center conso le: button for the rear spoiler
The rear spoiler retracts and extends. It can be
activated in various operat ing modes (manua l
mode or automatic mode).
Automatic mode (normal operation)
- Automatic extension: the rear spoiler w ill auto­
matically extend when speeds exceed approxi­
mately 75 mph (120 km/h)
- Automatic retraction: the rear spoiler w ill auto­
matically retract when speeds decrease to un­
der approximately 50 mph (80 km/h).
Manual mode
- Extend ing manually : briefly tap the
c::> fig. 95
button to fully extend the rear spoiler .
- Retracting manually: when driving at speeds
below approximately 10 mph (20 km/h), press
and hold the b utton to retract the rear spoiler.
When at speeds between 10 mph (20 km/h)
and 75 mph (120 km/h), the rear spoiler will
completely retract when you tap the button.
Indicator lights
I), . Rear spoiler: malfunction! Please con­
tact Service
The rear spoiler may not have extended due to a
malfunction . This could change the vehicle's driv­
ing characteristics at high speeds . Do not drive
faster than 85 mph (140 km/h) . Drive to an au-
thorized Audi dea ler or authorized Audi Service
..,.

Wheels
Wheels
Wheels and T ires
General information
~check your tires regularly for
damage (punctures, cuts, cracks
and bulges). Remove foreign ob ­
jects from the tire tread.
~ If driving over curbs or similar
obstacles, drive slowly and ap­ proach the curb at an angle.
~Have faulty tires or rims re­
placed immediately.
~ Protect your tires from oil,
grease and fuel.
~ Mark tires before removing
them so that the same running
direction can be maintained if
they are reinstalled.
~Lay tires flat when storing and
store them in a cool, dry location
with as little exposure to light as
possible.
_&. WARNING -
-Never drive faster than the maximum permitted speed
for your tires. This could cause
the tires to heat up too much.
This increases the risk of an
accident because it can cause
the tire to burst .
-Always adapt your driving to the road and traffic condi-
244
tions . Drive carefully and re­
duce your speed on icy or slip­
pery roads . Even winter tires
can lose traction on black ice.
(@ Note
-Please note that summer and
winter tires are designed for
the conditions that are typical
i n those seasons . Aud i recom­
mends using winter tires dur­
ing the winter months . Low
temperatures significantly de­
crease the elasticity of summ­
er tires, which affects traction
and braking ability. If summer
tires are used in very cold
temperatures, cracks can form
on the tread bars, resulting in
permanent tire damage that
can cause loud driving noise
and unbalanced tires.
-Burnished, polished or chromed rims must not be used in winter driving condi­
t ions. The surface of the r ims
does not have sufficient corro­
sion protection for this and
could be permanently dam ­
aged by road salt or similar
substances.

Wheel s
0 US DOT number (TIN) and
manufacture date
T he manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire) :
DOT ... 2217 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2017.
@ Audi Original 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
able to provide you with more in­
formation.
® Mud and snow capability
"M/5" or "M+S" indicates the tire
has properties ma king it suitable
to drive in mud or snow.
& indi­
cates a winter t ire .
@) Compos ition of the tire cord
and materials
T he number of plies indicates the
number of rubberized fabric lay­
ers in the tire . In general: the
more layers, the more weight a
246
tire can carry. Tire manufacturers
must also specify the materials
used in the tire . These include
steel , nylon, po lyester and other
materials .
@ Maximum permitted load
This number indicates the max i­
mum load in kilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
tr action and temper ature
resistance
Treadwear, traction and tempera­
ture
ranges ~ page 260.
@ Running direction
@Maximum permitted
inflation pressure
This number indicates the maxi ­
mum pressure to which a tire can
be inflated under normal operat­
ing condit ions .
Glossary of tire and loading
terminology
Accessory weight
means the comb ined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer -
ing, power brakes, power
..

Wheels
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
is the same circumference as the
regular tires.
& 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.
252
-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.
-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.

Cl 00 .-< N r--­N .-< 0 r--­Vl 00
rims yourself, because this increases the risk
of an accident.
Winter tires
Winter tires significantly improve the vehicle 's
handling when driving in winter conditions. Be­
cause of their construction (width, compound,
tread pattern), summer tires provide less trac­
tion on ice and snow.
.. Use winter tires on all four wheels.
.. Only use winter tires that are approved for your
vehicle .
.. Please note that the maximum permitted
speed may be lower with winter tires
9 .&, in
General information on page 244.
An author­
ized Audi dea ler or authorized Audi Service Fa­
cility can inform you about the maximum per­
mitt ed sp eed for your tires .
.. Check the tire pressure after installing wheels
9page 254.
The effectiveness of winter tires is reduced great­
ly when the tread is worn down to a depth of
0 .1S7 in (4 mm) . The chara cteristics of winter
tires also decrease greatly as the tire ages, re­
gardless of the remaining tread .
@.l For the sake of the environment
Reinstall summer tires at the appropriate
time, because they provide better handling
when roads are free of snow and ice. Summer
tires cause less road noise, tire wear and fuel
consumption.
(D Tips
You can also use all season tires instead of
w inter tires . Please note that in some coun­
tries where w inter tire s are required, only
w int er tires with
the£ symbol may be per­
mitted.
Snow chains
Snow chains not only improve the driving in win­
ter road conditions, but also the braking.
Wheels
.. Only install snow chains on the front wheels.
This applies a lso to vehicles with all wheel
drive* .
.. Check and correct the seating of the snow
chains after driving a few feet, if necessary. Fol­
low the instructions from the manufacturer .
.. Note the maximum speed of 30 mph (SO km/
h) . Note the local regulations .
Use of snow chains is only permitted with certa in
rim/tire comb inat ions due to technical reasons .
Check with an author ized Audi dealer or author­
ized Audi Service Facility to see if you may use
snow chains .
You must remove the snow chains on roads with­
out snow . Otherwise, you could impair driving
ability and damage the tires .
.8, WARNING
Using incorrect snow chains or install ing snow
chains inc orrectly can resu lt in loss of veh icle
control, which increases the risk of an acci­
dent.
(W) Note
- Snow chains can damage the rims/wheel
covers* if the chains come into direct con­
tact with them. Remove the wheel covers*
first. Use coated snow chains.
- Using snow chains that add more than O.S3
in (13,S mm) of height can severe ly damage
the whee l housings and other vehicle com ­
ponents .
(D Tips
When using snow chains, it may be usefu l to
switch on sport mode
~ page 87.
Low-profile tires
App lies to: vehicles wi th low- pro fil e tir es
Compared to other tire/rim combinations, low­
profile tires offer a wider tread surface and a
larger rim diameter with shorter tire sidewalls .
This results in an ag ile driving style . However, it
may reduce the level of comfort and increase
r oad noise when driving on roads in poor condi-
tion.
..,_
259

Wheels
store the pressure again in the Infotainment sys­
tem
i::> page 262 .
mm (Tir e Pr essure Monitoring System) Tire
pressure: malfunction! See owner's manual -
if
mm appears after switching on the ignition or
while driving and then the
[DJ indicator light in
the instrument cluster also starts to blink for
about one minute and then stays on permanen t­
ly, there is a system malfunction. Try to store the
correct tire pressures
<=:> page 262 . If the indica­
tor light does turn off or turns on again after a
short period of time, drive to an authorized Audi
dealer or authorized Aud i Serv ice Facility immedi­
ately to have the malfunction corrected .
_& WARNING
-If the tire pressure indicator appears in the
display, reduce your speed immediately and
avoid any hard steering or braking maneu­
vers. Stop as soon as possible and check the
tires and their pressure.
- The driver is responsible for maintaining the
correct tire pressures. You must check the
tire pressures regularly.
-Under certain conditions (such as a sporty
driving style, winter conditions or unpaved
roads), the pressure monitor indicator may
be delayed .
- Do not use run-flat tires on your vehicle. Us­
ing them when not permitted can lead to
vehicle damage or accidents .
(D Tips
- The tire pressure monitoring system can al­
so stop working when there is an ESC mal­
function.
- Using snow chains may result in a system
malfunction.
- The tires with the identification
"AO"
¢page 251 have been matched with your
Audi tire pressure monitoring system . Using
these tires is recommended.
262
Storing tire pressures
Applies to: vehicles with Tire P ressure Monitoring System in­
dicator
If the t ire pr essure chang es or a tire is replaced ,
it must be confirmed in the Infotainment sys­
tem.
.,. Make sure before storing that the tire pressures
of all four tires meet the specified values and
a re adapted to the load
<=:>page 253.
.,. Switch the ignition on.
.,. Select in the Infotainment system : the!M ENUI
button > Vehicle > left control button > Service
& checks> Tire pressure monitoring .
(D Tips
Do not store the tire pressures if snow chains
are installed .
Tire pressure monitoring
system
ill General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indicated on
the vehicle placard or tir e inflation pr essure la­
bel, you should determine the proper tire infla­
tion pressure for those tires).
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
( T PMS) that illuminates a low tire pressure tell­
tale when one or more of you r tires is significant­
ly under-inflated. Accordingly, when the low tire
pressure telltale illuminates, you should stop and
check your tires as soon as possible, and inflate
them to the proper pressure . Driving on a signifi­
cant ly under-inflated t ire causes the tire to over­
heat and can lead to tire failur e. Under-inflation
also reduces fuel efficiency and tire tread life,
and may affect the vehicle's handling and stop-
ping ability.
..,.

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-Always stor e damaged whee l, jack and too ls
securely in the luggage compartment. Oth­ erwise, in an accident or sudden maneuver
they could fly forward, caus ing injury to pas­
sengers in the vehicle .
Spare tire
General information
Applies to: veh icles wit h space -saving spa re t ire (compact
spa re t ire)
A U DI
Fig. 203 Lugg age co mpar tment : spar e tir e
F ig . 204 Sp are t ire (ex ample)
The spare tire is intended for short-term use on­
ly . Have the damaged t ire checked and replaced if
necessary by an author ized Audi dealer or author­
i zed A udi Service Fac ility as soon as possib le.
T here are some restrictions on the use of the
compact spare tire . The compact spare tire has
been designed specifica lly for your type of veh i­
cle . Do not replace it w ith the spare tire from an­
o ther type of vehicle.
Removing the spare tire
.,. Turn the handle c::> fig . 203 (D counter-clock­
wise.
.,. Remove the spare tire .
Emergen cy as sis tanc e
Removing the vehicle jack
.,. Lift up the cover on the right side of the lug­
gage compartment and remove the vehicle
jack.
Snow chains
For technical reasons, the use of snow chains on
the compact spare tire is not pe rmit ted.
If you have to dr ive with snow chains and a front
t ire fails , mount the spare tire in place of a rear
t ir e. Install the snow chains on the rear t ire that
yo u removed, and ins tall that in place of the
front t ire that fai led.
_&, WARNING ..
- After insta lling a spare tire, the tire pres ­
sure must be checked as soon as possible .
- D o not dr ive faster than 50 mph (80 km/h)
with a compact spare tire. Driving faster
than that inc reases the risk of an accident.
- To reduce the r isk of an accident, avoid full ­
throttle acceleration, heavy braking, and
fast corner ing with the compact spare tire .
-
- To reduce the risk of an accident, neve r drive
with more than one compact spare tire .
- Normal summer or winter tires must not be mounted on the compact spare wheel rim.
279