2008 AUDI TT ROADSTER winter tires

When this symbol ' illuminates, it means that Adaptive Light is
defective. Go to a qualified workshop to have the headlights or the
control unit for the Adaptive Light repaired. •
Applies to vehic les: w it h tir e p ressure monitor in g system
Tire pressure monitoring system J
Tire pressure that is too low must be corrected as soon as
possible .
If the 'symbol flashes for about one minute after the igni­
tion is switched on and then remains on, there is a malfunc­
tion in the system. Consult the nearest authorized Audi
dealer as soon as possible.
Additional information about the tire pressure monitoring system
can be found: => page 41. •
Speed warning system
Overview
The speed warning system helps you to keep your driving
speed below a set speed limit.
Controls and equip ­
ment
Fig . 23 Display: speed
warning system
Driver inform ation system
The speed warning system warns the driver if he exceeds a previ ­
ously stored maximum speed. A warning tone wi ll sound as soon as
the vehicle speed exceeds the set speed by about 6 miles per hour (10 km/h). At the same time, a warning symbol appears in the
display=> fig. 23.
The speed warning system has
two warning thresholds that func ­
tion independently of each other and that have somewhat different
purposes :
Speed warning 1 )f ..._ (Canada models)
You can use speed warning 1 to set the maximum speed while you
are driving . This setting will remain in effect until you turn off the
ignition, assuming that you have not changed or reset the setting.
The speed warning symbol
J I ,.... (Canada models) in the warning 1
display appears when you exceed the maximum speed . It goes out
when the speed falls below the stored maximum speed.
The speed warning symbol will also go out if the speed
exceeds the
stored maximum speed by more than about 25 mph (40 km/h) for at
least 10 seconds. The stored maximum speed is deleted .
Setting speed warning 1 =>
page 38.
Speed warning 2 ...,,, /
e!. (Canada models)
Storing warning 2 is recommended if you always want to be
reminded of a certain speed, for example when you are traveling in
a country that has a general maximum speed limit, or if you do not
want to exceed a specified speed for winter tires.
The speed warning 2 symbol, / ) (Canada models) appears in the
display when you exceed the stored speed limit. Unlike warning 1,
it wi ll not go out until the vehicle speed drops below the stored
speed limit .
Setting speed warning 2 =>
page 38 .
I • •

• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambien t air temperature.
• When tires are replaced, the sensors and valves should not be
exchanged. The valve core, nut, valve sea ling and sea l washer
(replacement kit) needs to be replaced. If necessary, the valve and
the wheel electronics have to be rep laced .
• If you should put different wheels and tires on your vehicle (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compatible with the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault
message will be displayed. For more information, contact your Audi
dea ler.
• Adjust the tire pressure and store the pressure in the tire pres ­
sure monitoring system to the load you are carrying .•
Significant loss of air pressure \-,1
The yellow symbol appears in the event of a significant
loss of air pressure.
Fig. 28 Display: yellow
symbol with message
If the • warning light in the instrument cluster comes on
and then the ( symbol appears in the display~ fig. 28,
pressure in at least one t ire is too low.
Controls and equip ­
ment
Driver inform ation system
Stop driving as soon as possible without endangering
yourself and other drivers on the road .
- Inspect all tires.
Change the tire if necessary ~ page
267.
The ._ warning light in the instrument cluster comes on when the
tire is significantly underinflated .
In addition, the tire symbol(_, appears in the display together with
the message
Please check tire pressure => fig. 28.
After a few seconds, the message disappears again. If you would
like to show the message again, press the Set/Check button
=>
page 12, fig. 2 ©-
[ i ] Tips
• In the case of an intentional loss of air pressure, for example,
when re -adjusting tire pressure, this has to be stored again after ­
wards=> page 44.
• Tire pressure must only be adjusted when the temperature of the
t ires is about the same as ambient air temperature.
• The yellow symbol disappears, when the tire pressure is
corrected and the new pressure is stored in the system=>
page 44.
• After changing a wheel or replacing a wheel with the spare tire
you have to adjust the tire pressures on a ll wheels. In add ition , you
must then initia lize the new tire pressures in the tire pressure moni ­
toring system =>
page 44. •
I • •

[ i ] Tips
• If the pow er st eering sy stem sho uld fa il, or if the e ng ine is not
running (for examp le , whi le being towed), you will stil l be able to
st eer the ve hicle . How eve r, more e ffort w ill be required to do so.
• I f the powe r steering system is not f unctioning pr ope rly, contact
your authorized Audi dea ler immediate ly.
Ap plies to vehicles : wit h A ll Wheel Driv e
Driving w ith your quattro®
With All Wheel Drive, all four w heels ar e dri ven.
General information
With All W hee l Dr ive, power is d is tr ibute d to all fou r whee ls . T his
happens automat ica lly depending on your driving style and the
r oad cond itio ns at the time. See also =>
page 186, "E lec tronic diffe r­
entia l lock ( EDU" .
Winter tires
When driving in the winter, your vehic le with All Wheel Drive has an
advantage, even wi th regula r t ir es . In winter road conditions it may
be advisable to mount winter tires (or all -season tires) for improved
driveabi lit y an d braking : these tires m ust be mounted on
all four
wheels .
See also=> page 254 , "Win ter t ires" .
Snow chains
Where tire cha ins are mandatory on certain roads, this normally
a lso a pplies t o vehic le s wi th Al l Wheel Drive =>
page 255, "Sn ow
chains".
Replacing wheels /tires
Vehicles with A ll Wheel Drive must always have tires of the same
s iz e. Also av oid t ires w it h d iff eren t tr ead dep ths. For details see
page=>
page 249, " New tires and replacing tires and whee ls " .
Controls and equip­
ment Safety first Vehicle operation
Intelligent technology
Off
-Road driving?
Your Audi d oes not have en ough gr ound clea rance to be use d as a n
off -road vehicle. It is therefore best to avoid roug h tracks and
u neven terrain as much as possible. A lso refer to=>
page 194.
& WARNING
Always adjust your driving to road and traffic conditions. Do not
let the extra safety afforded by All Wheel Drive tempt you into
taking extra risks .
• Although the All Wheel Drive is very effective , always
remember that braking capacity is limited by tire traction. You
should therefore not drive at e xcessive speeds on icy or slippery
road surfaces.
• On wet road su rfaces , be careful not to dr ive too fast because
the front wheels could begin to slide on top of the water (aqua ­
planing ).
If this should occur , you will have no warning from a
sudden increase in engine speed as with a front -wheel drive
vehicle . Always d rive at speeds which are suited to the road condi­
tions. -risk of cra sh. •
Vehicle care Do-it-yourself service Technical data

___ C_ le_ a _ n_i_n ~g _ a_ n_ d __ p_r _o _t _e _c_ t_ i_o _n ___________________________________________ _
& WARNING
• Do not cl ean th e under side o f the ch ass is, fender s, whe el
c over s, or other hard to r ea ch part s without protecting your h and s
a nd a rms. Yo u may cut you rse lf on sh ar p-edged m eta l p art s.
• Alway s read and h eed all WARNINGS and other informat ion
~ p age 2 00 .
0 Note
• Never try to remove dirt, mud or dust if the surface of the vehicle
is dry . Never use a dry cloth or sponge, s ince this cou ld scratch your
vehic le's paint or w indows .
• Never wash your car in br ight sunl ight. Drops of wa ter act as
magnifying lenses and may damage your paint .
• When you wash your car in the winter : if you rinse your vehicle
with a hose, be careful not to aim the stream of water directly at
locks, or at door or ha tch openings - they can freeze shut.
• Never use sponges designed to remove insects, or any kitchen
scouring sponges or simila r products. They can damage your paint
finish .
• Never use a dry cloth or sponge to c lean the head lights. Only use
wet cloths or sponges to prevent scratches . It is best to use soapy
water.
c£> For the sake of the environment
In the interest of the environment, the vehicle shou ld on ly be
washed in special wash bays. •
Washing your vehicle with a power washer
Cleaning the exterior of your car with a high-pressure
power washer is safe as long as you observe a few simple rules .
-Before us ing the powe r washer, make sure you have read
and understood the WARNINGS~
& in "General infor ­
mation" o n
page 200.
Always follow the operating instructions for the power
washer.
Make sure that the jet o n th e sp ray hose produces a "fan
shaped sp ray".
Do
not hold the spray n ozzle too close to soft ma terials .
Never u se a power washer to clean the power top itself .
When cleaning the vehicle with a power washer
always follow the
operating instructions. This applies particula rly to the
operating
pre ssure
and the spraying di stanc e. Maintain a sufficient distance
to soft materia ls such as rubber hoses and sound/vibration dead­
ening materia ls (particularly on the underside of the engine hood).
Do not use a jet which sprays water in a
di re ct stre am or one that
has a
rotating jet.
Water temperature shou ld not exceed 140 °F (60 °Cl.
in. WARNING
Never wash tires with a jet that sp rays water in a dire ct stream .
Thi s could cause invisib le damage to the tire s and weaken them ,
even if the spra y is fr om a re lative ly lo ng d istanc e and f or a s ho rt
tim e. Damaged and we akened tire s can f ail and cau se ac cident s
a nd pers ona l i njur y. .,,_

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ _
•
Sidewa ll
means that portion of a tire between the tread and bead.
Speed ra ting means the speed at which a t ire is designed to be driven for
extended periods of time. The ratings range from 93 mph (150 km/h)
t o 186 mph (298 km/h) =>
page 251. You may not find this informa ­
tion on all tires because it is not required by law.
The speed rating letter code, where applicab le, is molded on the tire
sidewa ll and indicates the maximum perm issible road speeds=>
&
in "Winter tires" on page 254.
T ire pre ssu re m on it o rin g syste m
means a system that detects when one or more of a vehicle's tires
are under inflated and illuminates a low tire pressure warning tell­
tale.
Tre ad
means that portion of a tire that comes into contact with the road .
Tread sepa ra ti on
means pu lling away of the tread from the tire carcass.
Tr ea dw ear indi cato rs ( TW I)
means the projections with in the principal grooves designed to give
a visual indication of the degrees of wear of the tread . See
~ page 248, "Tread Wear Indicator (TWI)" for more information on
measuring tire wear.
U ni form Tire Q ua lity G radin g
is a tire information system developed by the United States National
Highway Traffic Safety Administration (N HTSA) that is designed to
help buyers make re lative comparisons among tires. The UTQG is
not a safety rating and not a guarantee that a tire will last for a
prescribed number of miles or perform in a certain way. It simply
gives tire buyers additiona l information to combine with other
considerations, such as price, brand loya lty and dealer recommen- dations
. Under UTQG, tires are graded by the tire manufacturers in
three areas : treadwear, trac tion and temperature resistance. The
U TQG information on the tires, molded into the sidewalls.
U .S . DOT Tire Identifi cation Number (TIN )
This is the tire's "serial number" It begins with the letters "DOT" and
indicates that the ti re meets a ll federa l standards. The next two
numbers or letters indicate the plant where it was manufactured,
and the last four numbers represent the week a nd year of manufac ­
ture . For example,
DOT ... 2207 ...
means that the tire was produced in the 22t h week of 2007. The
other numbers are marketing codes that may or may not be used by
t he tire manufacturer. This information is used to contact
consumers if a tire defect requires a recall.
Vehi cle cap acity we ight
means the rated cargo and luggage load plus 150 lbs. (68 kilograms)
times the vehicle's tota l seating capacity as l is ted on the label
located on the driver's side B -pi llar.
V eh icle maximum load on the tire
means that load on an individual tire that is determined by distrib ­
uting to each ax le its share of the max imum loaded vehicle weight
and dividing by two.
Ve hic le normal lo ad on the tire
means that load on an individual tire that is determined by distrib ­
uting to each ax le its share of the curb weight, accessory we ight,
and normal occupant weight (distributed in accordance with tab le
below =>
page 242) and dividing by two . ._
Vehicle care I t •

Tires a nd wh eels -
----------------
•
Tire manu fact uring da te
The manufacturing date is a lso indicated on the tire sidewall
(possibly only on the
inner side of the wheell:
"DOT ... 2207 ... " means, for example, that the tire was produced in
the 22th week of 2007.
S peed ratin g (let te r cod e)
The speed rating letter code on the wheels indicates the maximum
permissible road speeds=>
& in "Winter tires" on page 254.
P up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
R upto 106mph(170km/h)
S upto110mph(180km/h)
T upto118mph(190km/h)
U up to 124 mph (200 km/h)
H upto 130mph(210km/h)
V up to 149 mph (240 km/h)2>
Z over 149 mph (240 km/h)2>
W up to 168 mph (270 km/h)2>
Y up to 186 mph (298 km/h)21
Your vehicle is normally factory equipped with tires, which possess
excel lent driving characteris tics and give your Audi optimum
driving comfort. An e lectronic speed limiter=> page 26wil l normally
prevent your vehicle from going faster than the tire speed rating
=> & .
U.S . D OT T ire Ident ifi cation Nu mber (TIN ) and tire
m anu fac ture date
This is the tire's "seria l number" . It begins with the letters "DOT"
and indicates that the tire meets all federal standards . The next two
numbers or letters indicate the plant where it was manufactured,
and the last four numbers represent the week and year of manufac-
21 For tires with a maximum speed capability over 149 mph (240 km/h), tire
manufacturers sometimes use the letters "ZR."
ture. For example, the numbers 2207 mean that the tire was
produced in the 22th week of 2007. The other numbers are
marketing codes that may or may not be used by the tire manufac­
turer. This information is used to contact consumers if a tire defect
requires a recall.
Tir e ply c omp osition and m aterial s used
The number of plies indicates the number of layers of rubber-coated
fabric in the tire . In general, the greater the number of p lies, the
more weight a tire can support. Tire manufacturers also must indi ­
cate the materials in the tire, which include steel, nylon, polyester,
and others .
Maximum L oad Rating
This number indicates the maximum load in kilograms and pounds
that can be carried by the tire.
Tir e qu alit y g ra din g for tr eadwear, trac tion, a nd
te mper atu re resi stan ce
Tread wear, traction and temperature grades=> page 253.
Max imum P ermi ssibl e Inf latio n Pre ssure
This number is the greatest amount of air pressure that should ever
be put in the tire under normal driv ing conditions .
Repla cing tires or rims on vehicl es equipp ed with tir e
pres sure monit orin g s yst em
The wheels on your vehicle are equipped with a sensor which
constant ly monitors the air pressure ins ide the t ire, and then trans ­
mits this information to the tire pressure monitoring system. If you
are going to replace the wheel rims on your vehic le, make sure the
new rims also have these sensors . The sensors must be compatible
with the tire pressu re monitoring system on your vehicle.
I f the sensors are to be installed on different rims, the sea l, washer,
and valve cap for each sensor must be replaced.
If you instal l rims, which do not have the sensors, or have sensors
which are not compatible, then the tire pressure monitoring system ..,_
Vehicle care I t •

-Tires and wheels
P'tr:1-------------------
will not work prope rly . In this case, the tire pressure monitoring
s ys tem would n ot b e ab le to mon itor the tire p ressure or wa rn yo u
if it is necessary .
• The battery inside of the tire pressure sensor has a limited
se rvice life .
• Always d rive with the valve stem caps sec urely mounted . We
recommend using factory insta lled valve stem caps . Ask your au tho ­
rized Audi dealer to replace lost va lve stem cap s.
The installation o f rep laceme nt tire s wi th steel cor d body p lies in
the tire sidewal l may cause malfunction of the tire pressure moni ­
t or ing sys tem, a nd is no t re com mended (cord mater ial i nformat ion
in molded on the tire sidewa ll) .
A lw ays check your tire p ressure monito rin g s ystem i ndicator afte r
replacing o ne or mor e tir es o n you r vehi cle. If th e tire p ressu re
monito ring syste m indicat or flashes, o r is on, you r sy stem is not
wo rk in g pr oper ly. Your rep lac em ent ti re mig ht be i nco mpat ibl e wi th
your tir e pressure monitoring syst em , or som e component o f th e
tir e pr ess ure monito ring syste m may be da mag ed.
& WARNING
• Using incorrect or unmatched tires and/ or wheels or improper
tire and wheel combinations can lead to loss of control, collision
and serious personal injury .
• Always use tires , rims and wheel bolts that meet the specifica­
tions of original factory -installed tires or other combinations that
have been spe cifically approved by the vehicle manufacturer.
• Tires age even if they are not being used and can fail suddenly ,
especially at high speeds . Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds .
• Never mount used tires on your vehi cle if you are not sure of
their "previous history. " Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehi cle control.
& WARNING (continued)
• All four wheels must be fitted with radial tires of the same type,
size (rolling circumference ) and the same tread pattern. Driving
with different tires reduces vehicle handling and can lead to a loss
of control.
• If the spare tire is not the same as the tires that are mounted
on the vehicle -for e xample with winter tires -only use the spare
tire for a short period of time and drive with extra care . Refit the
normal road wheel as soon as safely possible.
• Never drive faster than the maximum speed for which the tires
on your vehicle are rated because tires that are driven faste r than
their rated speed can fail suddenly .
• Overloading tires cause heat build-up , sudden tire failure ,
including a blowout and sudden deflation and loss of control .
• Temperature grades apply to tires that are properly inflated and
not over or underinflated .
• For te chnical reasons it is not always possible to use wheels
from other vehicles -in some cases not even wheels from the
same vehicle model.
• If you install wheel trim discs on the vehicle wheels, make sure
that the air flow to the brakes is not blocked. Redu ced airflow to
the brakes can them to overheat , increasing stopping distances
and causing a collision.
• Run flat tires may only be used on vehicles that were equipped
with them at the fa ctory . The vehicle must have a chassis designed
for run flat tires and a factory -installed tire pressure monitoring
system that indi cate s a loss of tire pressure . Incorre ct use of run
flat tires can lead to vehicle damage or accidents . Check with an
authorized Audi dealer o r tire specialist to see if your vehicle can
be equipped with run flat tires .
If run flat tires are used, they must
be installed on all four wheels . Mixing tire types is not permitted. .,

Tires a nd wh eels -
----------------
•
0 Note
• For technical reasons, it is not genera lly possible to use the
whee l rims from other vehic les. This can hold true for wheels of the
same vehic le type.
• If the spare tire is different from the tires that you have mounted
on your vehicle (for example winter tires or wide p rofile t ires), then
use the spare tire for a short period of time only and drive with extra
care. Rep lace the flat tire with the tire matching the others on your
vehicle as soon as possible.
• If you should put different wheels and tires on your vehic le (e.g.
winter wheels and tires), you must be certain that the wheels and
tires are compat ib le w ith the tire pressure monitoring system.
Otherwise the system will register a malfunction and a fault
message will be displayed . For more informatio n, contact your Aud i
dea ler.
0 Note
• When insta lling new tires, be carefu l not to damage the va lves or
t ire p ressure moni toring syste m sensors .
• Never drive without the va lve stem cap. The va lves could get
damaged.
• I f the sensors must be replaced, then the valve must also be
replaced at t he same t ime.
Dispose of o ld tires in accordance with the local requ irements .•
Uniform tire quality grading
• Tread wear
• Traction AA A B C
• Temperature A B C Qua
lity grades can be found where applicable on the tire side wall
b etween tread shoulder a nd maximum section width =>
page 249,
fig. 164.
For example : Tread wear 200, Traction AA , Temperature A.
All passenger car tires must conform to Federa l Safety Require ­
ments in addit ion to these grades.
T read wear
The tread wear grade is a comparative rating based on the wear rate
o f t he tire when tes ted under contro lled condit ions on a specified
government test course.
F o r example, a tire g raded 150 would wear one and one half (1 1 /2)
times as well on the government course as a tire graded 100.
The relative performance of tires depends upon the actual condi ­
tions o f the ir use, however, and may depart sign ificantly from the
norm due to variations in driving habits, service practices and differ ­
ences in road characterist ics and c limate .
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 under contro lled cond itions on specified government
test surfaces of asphalt and concrete. A tire marked C may have
poor t raction performance =>& .
Temperature
The temperature grades are A (the highest), B, and C, represent ing
the tire 's resistance to the generation of heat and its ability to dissi ­
pat e heat when tested u nder con tro lled co nditions on a specified
indoor laboratory test wheel.
Sustained high temperature can cause the material of t he ti re to
degenerate and reduce tire life, and excessive temperature can lead
to sudden tire failure=:>& .
The grade C corresp onds to a level of performance which all
passenger car tires must meet under the Federa l Motor Vehicle
Vehicle care I t •