wheel AUDI TT COUPE 2017 Workshop Manual

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
..

Wheels
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel.
If you do not, the tires and other
vehicle components could wear
more quickly.
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are
1/16 in (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion¢
fig . 197 . The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread­
wear indicators.
The tires have reached the mini­ mum tread depth
l) when they
have worn down to the tread wear
indicators . Replace the tires with
new ones ¢A.
Tire rotation
Rotating the tires regularly is rec­
ommended to ensure the tires
wear evenly. To rotate the tires,
install the t ires from the rear axle
on the front axle and vice versa .
This will allow the tires to have
1> Obey any applicable regulations in your
country.
264
approximately the same length of
service life.
For unidirectional tires, make
sure the tires are installed accord­
ing to the running direction indi­
cated on the tire sidewall
¢page 286.
Hidden damage
Damage to tires and rims can of­
ten occur in locations that are hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage.
Reduce your speed immediately.
Check the tires for damage . If no
damage is visible from the out­
side, drive slowly and carefully to
the nearest authorized Audi deal­ er or authorized Audi Service Fa­
cility to have the vehicle inspect­
ed.
8_ WARNING
Tread that has worn too low or different tread depths on the
tires can reduce driving safety.
This can especially have a nega­
tive effect on handling, on the risk aquaplaning when driving
through water, when driving ,..

al
al
.... N
" N .... 0
0
V'l al
through curves and when brak­ing, which increases the risk of
an accident.
Tire pressure
Fig. 198 Driver's sid e B-pillar : tir e pres­
sure label
"' -
-~-------------------,£
<l e::=.~: I =: I :,,. I)@ g: n,.,_,......._.___. ... _.,._.. _ __. .... _ ...
leooodl__._.,_,.d:.,~w._;.,.-~ •• ._
tM£. IIZl COLO tlllf fllllESSt.lW. PNfU Nl:4fN$IOM$ "IIISaoN OE$ PMEU$ A FROID
-AYIJff -KPA, a PSI
Fig. 199 Tire pressure label
The correct tire pressure for tires
mounted in the factory and for
the spare t ire* is indicated on a la­
bel. The label is located on the B­
pillar ¢
fig. 198, ¢ fig. 199.
Use the tire pressure specified for
a normal vehicle load when the
vehicle is partially loaded¢
table
on page
267. If driving the vehi­
cle when ful ly loaded, you must
Wheels
increase the tire pressure to the
maximum specified pressure¢&.-
Checking/correcting tire
pressure
.,,.Check 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 increas­
es when the tires are warm .
... check the label ¢
fig. 199 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
¢page 274.
.,,.Check the pressure in the emer­
gency tire*/spare t ire*. Always
maintain the maximum temper ­
ature that is specified for the
tire .
_& WARNING
Always adapt the tire pressure
to your driving style and vehicle
load.
-Overloading can lead to loss of vehicle control and increase ...
265

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.

co
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.... N
" N .... 0
0
Vl c:o
Wheels
Model/ Tire designation Tire pressure
Engine Normal load Maximum load
(up to 2 people)
front rear front rear
PSI
TT: 245/45 R17 95V
32 2.0L High Performance
4-Cylinder 245/40 R18 93H
All Season
32
245/40 R18 93V 32 High Performance
245/35 R19 93V
35 High Performance
255/30 R20 92V
35 High Performance
TTS: 245/40 R18 93V
32
2.0L High Performance
4-Cylinder 245/35 R19 93V
High Performance
35
255/30 R20 92V
35 High Performance
A WARNING
Please note the important safe­
ty precautions regarding tire pressure
¢ page 265 and load
limits
¢ page 267.
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
kPA PSI kPA PSI kPA PSI kPA
220 29 200 33 230 30 210
220 29 200 33 230 30 210
220 29 200 33 230 30 210
240
32 220 35 240
32 220
240 32 220 36 250 32 220
220 29 200 33 230
30 210
240 32 220 38 260 32 220
240 32 220 39 270 33 230
tire failure, including a blowout
and sudden deflation that can
cause the vehicle to crash.
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 ..
267

Wheels
plus maximum load. The maxi­
mum load includes the number of
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
c::> page 265,
fig. 198.
A WARNING
Overloading a vehicle can cause
loss of vehicle control, a crash
268
or other accident, serious per­
sonal injury, and even death.
-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.
-Always 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 . ..

co
co
.... N
" N .... 0
0
Vl c:o
Steps for Determining Correct Load Limit
1 . Locate the stat em ent "THE
COMBINED WEIGHT OF OCCU­ PANTS AND CARGO SHOULD
NEVER EXCEED XXX KG OR X XX
LBS "on your vehi cle 's pla card
(tire inflation pr essure l abel)
¢ pag e 265 , fig. 198.
2 . Determine the combined
weight of the dri ver and pa s­
sengers that will be riding in
your vehicle.
3. Subtract the comb ined weight
of the driver and passengers
from
" XXX " kilograms or "XXX "
pounds shown on the sticker
¢ page 265, fig. 198 .
4. The resulting figure equals the
available amount of cargo and
luggage load ca pac ity. For ex­
ample, if the
"X XX" amount
equals 1400 lbs and there w ill
be five 150 lbs passengers in
your vehicle , the amount of
available cargo and luggage
load capacity is 650 lb s
(1400- 750 (5
X 150) = 650 lbs)
5. Determine the combined weight of luggage and cargo being loaded on the vehicle.
Th at weight ma y not safely ex­
ceed the a vailable cargo and
Wheels
luggage load capa cit y ca lc ulat ­
e d in Step 4.
6. If your vehicle will be towing a trailer, load f rom your trail er
will b e tran sferred to your ve­
hicle . Con sult thi s manual to
det ermine how this reduces
the a vailable cargo and lug­
gage load c apacity of your vehi ­
c le.
.,,.Check the tire sidewall
(¢ p age 255 , fig. 196) to deter­
mine th e designated lo ad rating
for a spe cifi c tire .
Wheel bolts and rims
Wheel bolts
Whee l bo lts must be clean and loosen/tig hte n
easily.
Rims
Rims with a bo lted r im ring* or with bolted w heel
cove rs* cons ist of mult iple p ieces . These compo­
nents were bolted togethe r using spec ial bolts
and a spe cial pro ced ure. Yo u m ust no t repai r or
disasse mble them
c::> ,&. .
_& WARNING ~ -
Wheel bo lt s th at are tightene d or rep aired in­
cor rect ly can become loose and resu lt in loss
of vehicle co ntro l, w hich increases the risk of
an accident. For t he cor rect tighten ing speci fi­
cation, see
c::> page 286, Finishing .
-Always keep the wheel bolts and the
threads in the wheel h ub clean and free of
grease.
- Onl y use wheel bolts that fit the rim.
- Always have damage d rims repaire d by an
author ized Audi dealer or author ized Audi
Serv ice Facility . Never repair o r disassemb le .,,.
269

Wheels
rims yourse lf, because this increases the risk
of an accident.
Winter tires
W inter tire s significan tly improve the vehicle 's
handling when driving in w inter condi tions. Be­
cause of the ir construction (width, compound,
tread pattern) , summe r tires p rovide less trac­
tion o n ice and snow.
.. Use w inter t ires o n all four wheels .
.. Only use w inter t ires that are approved for your
vehicle .
.. Please note that the maximum permitted
speed may be lower with winter tires
¢ & -An
a utho riz ed Aud i dea le r o r authorized Audi Serv­
ice Facility can inform you about the maximum
permitted speed fo r you r tires.
.. Check the tire pr essu re after installing whee ls
¢ page 265.
The effectiveness of winter tires is reduced great ­
ly whe n the tread is wor n down to a depth of
0 .157 in (4 mm). The character istics of winter
tires also decrease great ly as the tire ages, re­
gardless of the remaining tread.
A WARNING
- Never dr ive faste r than the maxim um per ­
mitted speed for your t ires . This cou ld cause
the tires to heat up too much. This increases
t h e risk of an a cciden t be ca use i t can c ause
t h e tire to burst.
- Always adapt yo ur driv ing to t he r oad and
t ra ffic conditions. Drive ca refully and red uce
yo ur sp eed on icy or slippery roads. Even
winte r tires can lose traction on black ice .
@ For the sake of the environment
Reinstall su mme r tir es at the approp ria te
t ime, because they provide bet ter ha ndling
when ro ads are free of snow a nd ice. S ummer
t ires cause less road noise, ti re wea r and fuel
consumption.
270
(D Tips
You can also use a ll season tires instea d of
winter tires . Please note that in some coun­
tries where winter tires are required, on ly
winter tires w it h the
& symbol may be per­
mitted.
' Snow chains
S now cha ins not on ly improve the driv ing in win­
te r road cond it io ns, but a lso the b raking .
.. On ly install snow chai ns on the front wheels .
T his applies also to vehicles with all wheel
dr ive*.
.. Check and co rrect t he seating of the snow
chains after driving a few feet, if nece ssary. Fol­
low t he inst ructions from the m anufac turer.
.. Note the max imum speed of 3 0 mph (50 km/
h). Note the local regulations.
U se of snow c hains is only permitte d wit h cert ain
rim/ tire comb inat ions due to technical reasons.
Check with a n authorized Audi dealer or author ­
i zed Audi Service Facility to see if you may use
snow chains.
You m ust remove the snow chains on roads wi th­
out snow . Otherwise, you co uld impair driving
ability and damage the t ires .
A WARNING
Using incor rect snow chains or installing snow
cha ins incor rectly can result in loss of vehicle
control, which increases the risk of an acci­
dent .
(D Note
-Snow chains can damage the rims/wheel
covers* if the c hains come into direct con­
tact with them. Remove the w heel covers *
first . Use coated snow cha ins .
- Us ing snow c hains that add more tha n 0.53
in (13,5 mm) of height can seve rely damage
the whee l housings and o ther vehicle com­
ponents .

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 . .,.