2018 AUDI TT ROADSTER Owners Manual

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Checking/correcting ti re
pressure
.,,. Chec k the tire pressure at least
once per month and also check it before every long drive.
.,,. Always check the tire pressure
when the tires are
cold . Do not
reduce the pressure if it inc reas ­
es when the tires are warm.
.,,. Check the label c:> fig . 190 for
the correct tire pressure based on vehicle load .
.,,.Correct the tire pressure if nec­
essary .
.,,.Vehicles with Tire Pressure Mon­
itoring System*: store the modi­
fied tire pressure in the Infotain­ ment system
c:> page 262.
.,,. Chec k the pressure in the emer­
gency tire*/spare tire* . Always
maintain the maximum temper­
ature that is specified for the
ti re .
&_ WA RNIN G
Always adapt the tire pressure
to your driving style and vehicle load.
Tire pressure table
P lease note that the information
contained in the following table
was correct at the time of print-
Wh eel s
-Overloading can lead to loss of
vehicle control and increase the risk of an accident. Read
and follow the important safe­
ty precautions
inc:> page 256,
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 t ire pressure in ­
creases tire wear and has a
negative effect on driving and
braking behavior, which in ­
creases the risk of an acc iden t.
@) Note
Replace lost valve caps to re­
duce the ris k of damage to the
tire va lves .
@) For th e sa ke o f th e e nvi ro nm ent
Tire pressure that is too low in­
creases fuel consumption .
ing, and the information is sub­
ject to change. If there are differ- ences between this information
..
255

Wheels
and the tire pressures specified
on the label on the driver's side
B­
pillar, always follow the specifica­
tion on the B-pillar label
¢ page 254, fig. 189.
Make sure that the tire designa­
tion on your tire matches the des-
Model/ Tire designation
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.
Tire pressure
Engine Normal load Maximum load
(up to 2 people)
front
PSI
TT : 245/45 R17 95Y 32
2.0 l
245/40 R18 93H 32
4-cylinder
245/40 R18 93Y 32
245/35 R19 93Y 35
255/30 R20 92Y 35
A WARNING
Please note the important safe­
ty precautions regarding tire
pressure ¢ page 254 and load
limits¢ page 256.
Tires and vehicle load limits
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop.
Overloading can not only lead to loss of vehicle control, but can al­
so damage important parts of the
vehicle and can lead to sudden
tire failure, including a blowout
256
kPA
220
220
220
240
240
rear front rear
PSI kPA PSI kPA PSI
29 200 33 230 30
29 200 33 230 30
29 200 33 230 30
32 220 35 240 32
32 220 38 260 32
and sudden deflation that can
cause the vehicle to crash.
kPA
210
210
210
220
220
Your safety and that of your pas­
sengers also depends on making
sure that load limits are not ex­
ceeded. Vehicle load includes ev­
erybody and everything in and on
the vehicle. These load limits are
technically referred to as the vehi­
cle's
Gross Vehicle Weight Rat­
ing
("GVWR").
The "GVWR" includes the weight
of the basic vehicle, all factory in­
stalled accessories, a full tank of
fuel, oil, coolant and other fluids
plus maximum load. The maxi­
mum load includes the number
of .,.

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passengers that the vehicle is in­
tended to carry ("seating capaci­
ty") with an assumed weight of
150 lbs. (68 kg) for each passen­
ger at a designated seating posi­
tion and the total weight of any luggage in the vehicle.
The
Gross Axle Weight Rating
("GAWR") is the maximum load
that can be applied at each of the
vehicle's two axles.
The fact that there is an upper limit to your vehicle's Gross Vehi­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle is limited.
The more passengers in the vehi­
cle or passengers who are heavier
than the standard weights as­ sumed mean that less weight can
be carried as luggage.
The Gross Vehicle Weight Rating and the Gross Axle Weight Rating
are listed on the safety compli­
ance sticker label located on the
driver's side B-pillar.
A WARNING
-
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per­
sonal injury, and even death .
Wheels
-Carrying more weight than
your vehicle was designed to
carry will prevent the vehicle
from handling properly and
increase the risk of the loss of
vehicle control.
-The brakes on a vehicle that
has been overloaded may not
be able to stop the vehicle
within a safe distance.
- Tires on a vehicle that has
been overloaded can fail sud­
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
-A lways make sure that the to­
tal load being transported
does not make the vehicle
heavier than the vehicle's
Gross Vehicle Weight Rating.
Determining correct load
limit
Use the example below to calcu­
late the total weight of the pas­
sengers and luggage or other
things that you plan to transport
so that you can make sure that
your vehicle will not be overload-
ed.
~
257

Wheels
Steps for Determining Correct Load Limit
1. Locate the statement "THE
COMBINED WEIGHT OF OCCU­PANTS AND CARGO SHOULD
NEVER EXCEED XXX KG OR XXX
LBS" on your vehicle's placard
(tire inflation pressure label)
c:> page 254 , fig. 189 .
2. Determine the combined
weight of the driver and pas­
sengers that will be riding in
your vehicle.
3 . Subtract the combined weight
of the driver and passengers
from
"XXX " kilograms or "XXX"
pounds shown on the sticker
c:> page 254 , fig. 189 .
4. The resulting figure equals the
available amount of cargo and
luggage load capacity. For ex­
ample, if the
" XXX" amount
equals 1400 lbs and there will be five 150 lbs passengers in
your vehicle, the amount of available cargo and luggage load capacity is 650 lbs
(1400-750 (5
X 150) = 650 lbs)
5 . Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely ex­
ceed the available cargo and
258
luggage load capa city cal culat­
ed in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer
will be tran sferred to your ve­
hicle. Con sult thi s manual to
determine how this reduces
the available cargo and lug­
gage load capacity of your vehi ­
c le .
~check the tire sidewall
(c:> page 245 , fig. 187) to deter­
mine the designated load rating
for a spe cifi c tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts mus t be clea n and loose n/tighte n
e asi ly.
Rims
Rims with a bo lted r im ring* o r with bo lted wheel
covers* cons ist of mult iple pieces . These com po­
nen ts were bol ted togethe r using s pec ial bol ts
a nd a s pecial proc edur e. Yo u m ust no t rep air or
d isa sse mble th em
¢ & -
_& WARNING
Wh eel bolts th at are tig hte ned or re paired in­
cor re ctly can be come loose and resu lt in los s
of ve hicle contro l, wh ic h increases the risk of
an accident. For t he cor rec t tighten ing s pec ifi­
cation,
see¢ page 27 8, Finishing.
- Always keep the wheel bolts an d the
threads in the w heel h ub clean an d fre e of
greas e.
- On ly us e whee l bolts tha t fit th e rim.
- Always h ave damage d rims repaire d by an
auth orized Audi dealer or auth orized A udi
S erv ice Facility. Neve r repa ir o r disassemb le
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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
Low -profile tires can become damaged more
quickly than standard tires when driving over large bumps, potholes, manhole covers, and
curbs. Therefore, it is particularly important to
maintain the correct tire pressure
c::;, page 254 .
To reduce the risk of damage to the tires and
rims, drive very carefully on poor roads.
Check your wheels regularly every 2,000 mi (3,000 km) for damage. For example, check for
bu lges/cracks on the tires or deformations/
cracks on the rims.
Afte r a heavy impact or damage, have the tires
and rims inspected or replaced immediate ly by
an authorized Audi dealer or authorized Audi
Service Facility.
L ow -profile tires can wear o ut faster than stand­
ard tires.
Uniform tire quality grading
- Tread wear
- T raction
AA A B C
- T emperature ABC
Qual ity grades can be found where appl icable on
the tire side wall between tread shoulder and
maximum sect ion w idth
c::;, page 245, fig. 187.
For example: Tread wear 200, Traction AA, Tem ­
perature
A .
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
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
(1 1/2) times as well on the govern­
ment course as a tire graded
100.
The relative performance of tires depends upon
the actual conditions of their use, however, and may depart significant ly from the norm due to
variations in driving habits, service practices and differences in road characteristics and climate.
260
Traction
The traction grades , from highest to lowest , are
AA,
A, Band C. Those grades represent the tire's
ability to stop on wet pavement as measured un ­
der controlled conditions on specified govern­
ment test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance
c::;, .&. .
Temperature
The temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
generat ion of heat and its ability to dissipate
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 reduce tire life,
and excessive temperature can lead to sudden
tire failure
c::;, ,&. .
The grade C corresponds to a level of perform­
ance which all passenger car tires must meet un­
der the Federal Motor Vehicle Safety Standard
No .
109 . Grades Band A represent higher levels
of performance on the laboratory test wheel than
the m inimum required by law.
A WARNING -
The traction grad e assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor­
nering, hydroplaning or peak traction charac­
teristics.
A WARNING
The temperature grade for this tire is estab ­
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla­
tion, or excessive loading, either separately or
in comb inat ion, can cause heat bu ildup and
possible tire failure.
A WARNING
-
-
Temperature grades apply to tires that are
properly inflated a nd not over o r underinflat­
ed.

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Tire pressure monitoring system
(J_) General notes
Each tire, incl uding the spare (if provided),
should be checked month ly when co ld and inflat­
ed to the inf lation pressure recommended by the
ve hicle manufacturer on the vehicle placard or
tire inflat ion pressure label. (If your vehicle has
tires of a d ifferent s ize tha n the s ize indicated on
the veh icle placa rd or t ire inflation pressure la­
be l, you s hou ld determine the prope r tir e infla­
tion pressure fo r th ose tires).
As an added safety feature, your ve hicle has been
equ ipped w ith a t ire pressu re monito ring system
(TPMS) that ill uminates a low tire p ress ure tell­
tale whe n one or more of yo ur t ires is sign ificant ­
l y unde r-infla ted. Accord ingly, whe n the low tire
p ressure tellta le illuminates, yo u should stop and
check your tires as soon as possible, and inflate
them to the proper press ure. D riving on a signifi ­
cantly under-inflated tire causes the tire to ove r­
h eat and can lead to t ire failure. Under-inflation
a lso reduces fuel efficiency and ti re tread life,
and may affect the veh icle's handling and stop­
p ing ability .
P lease note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
sponsib il ity to ma inta in correct tire pressure,
even if u nder-inflation has not reached t he leve l
to tr igger illum inat io n of t he TPM S low tire p res ­
sure telltale.
Your veh icle has also been equ ipped w ith a TPMS
malfunct ion ind icator to indicate when the sys­
tem is not operat ing properly. The TPMS ma l­
f u nction ind icator is combined w ith the low tire
p ressure tellta le. Whe n the system det ects a
mal function, the te lltale wi ll flash fo r approxi ­
mate ly one mi nute and then remain continuous ly
illum inated. This sequence will continue upon
subseq uent ve hicle start-ups as long as the ma l­
function ex ists .
W hen t he malfunctio n indicator is ill uminated,
the system may not be ab le to detect or signa l
low t ire press ure as intended. TPMS ma lfunctions
may occur for a var iety of reasons, including the
Wheels
insta llation o f replacement or alternate tires or
whee ls on the vehicle that prevent the TPMS
from functioning p roperly . Always check the
TPMS ma lfunction te lltale after replac ing one or
more tires or wheels on you r vehicle to ensure
t h at the rep lacement or a lternate tires a nd
wheels allow t he TPMS to continue to function
prope rly.
If the Tire Pressure Monitoring System
indicator appears
Applies to: vehicles with Tire Pressure Monitoring System in­
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
U sing the ABS se nsors, the t ire pressure monitor­
ing system compares the tire tread c ircumfer­
ence and v ibration characterist ics of the ind ividu­
al tires. If the pressu re changes in one o r more
t ir es, th is is indica ted in the Info tainment sys tem
display wi th an indica to r li ght
ti] and a message.
If only one ti re is affected, the location of tha t
tire will be indicated.
T he tire press ures mus t be store d in the Infota in­
me nt system agai n ea ch t ime t he p ressures
change (switching between partia l and full load
pressure) or after c hanging or replacing a tire on
yo ur vehicle
¢ page 262 . The tire pressure moni ­
toring system on ly monitors the tire pressure you
have stored. Refer to the t ire pressure label for
the recommended t ire pressure for your vehicle
¢ page 254, fig . 190 .
Tire tread c ircumference and vibration character ­
istics can change and cause a tire pressu re warn­
i ng if:
- the ti re pressure in one or more tires is too low
- the tire has str uctural damage
- t he t ire w as replaced or the t ire pressu re w as
changed and it was no t stored ¢
page 262
- the spare tire* is i nstalled
Indicator lights
ti] -loss of pressure in at least one tire ¢,& .
Check the t ires and replace or repair if necessary.
Check/correct the pressures of all fou r tires and
.,.
261

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.
..,.