2008 AUDI TT ROADSTER Owners Manual

Tires and wheels -
----------------
•
& WARNING (continu ed )
personal injur ies . Have worn or damaged tires repl aced immed i­
ately.
• Winter tires have ma ximu m speed rating th at may be lower
than your vehicle 's maximum speed.
• Never drive faster than the speed for which the winter or other
tire s installed on your vehicle are rated.
& WARNING
Alway s adjust your driving to the road and traffi c cond it ions .
Never let the good acceleration of the winter tires and all -wheel
drive tempt you into tak ing e xtra ri sks . Always remember :
• When braking , an all -wheel drive vehicle h andles in the same
way as a front drive vehicle .
• Drive carefully and reduce your speed on icy and slippery roads ,
even winter tires cannot help under black ice conditions.
c£> For the sake of the environment
Use summer tires when weather conditions permit. They are
quieter, d o not wear as qu ic kly and reduce fue l con sump tion. •
Snow chains
Snow c ha ins may be fitte d only to t he fr ont w heels , and only to
certain t ire sizes. Ask your authorized Audi dea ler on which tire
s izes snow chains ca n be used .
I f you are going to use snow chains, then you must instal l them on
the front whee ls at least.
The snow chains must have low-pro file l inks and must not be thicker
than 0. 53 inch ( 13 .5 mm), including the lock. Remove wheel center covers and
trim discs before putting snow
chains o n yo ur vehicle ~
(D. For safe ty reaso ns cover caps mus t
then be fitted over the whee l bolts. These are available from autho ­
r iz ed A ud i deale rs.
& WARNING
Using the wrong snow chain s for your vehicle or installing them
inco rrectly can increase the risk of loss of control leading to
serious personal injury.
• Snow chains are ava ila ble in d ifferent si zes . Always make sure
to follow the instructions provided by the snow chain manufac ­
turer .
• When driving with snow chain s never drive faster than the
speed permitted for your spe cific snow cha ins .
• Always observe local regulations .
0 Note
• Remove snow chai ns before d riving o n roads not cov ered w ith
snow to avoid damaging t ires and wearing the snow chains down
unnecessar ily .
• Snow chains, which come into direct contact with the wheel rim,
can scratch or damage it. Therefore, make sure t hat the s now c hains
are suitably covered.
[ i ] Tips
Where snow chains are mandatory on certain roads, this normally
a lso a ppl ies to veh ic les w it h All Wheel Dr iv e. •
Vehicle care I t •

_L_T~ir ~e :..:s~ a~n~ d~ w~ h ~e~e~ l~ s '.,_ ______________________________________________ _
Wheel bolts
W heel b olts mus t al wa ys be tigh te n ed to t he cor rect
to rqu e.
The design of wheel bolts is matched to the factory instal led rims . If
d ifferen t rims are fitted, the co rrect w heel bo lts wit h th e rig ht length
and correctly shaped bolt heads m ust be used. This ensures that
w hee ls are fitt ed s ecure ly a nd th at t he brake sys te m funct ions
correctly .
I n certain circums tances, yo u may no t use w heel b olts fr om a
differ ent vehicle -even if it is the same model::::;,
page 296.
&_ WARNING
Improperly tightened or maintained wheel bolts can become loose
causing loss of control , a collision and serious personal injury.
• Always keep the wheel bolts and the threads in the wheel hubs
clean so the wheel bolts can turn easily and be properly tightened.
• Never grease or oil the wheel bolts and the threads in the wheel
hubs. They can become loose while driving if greased or oiled,
even if tightened to the specified torque .
• Only use wheel bolts that belong to the rim being installed.
• Never use different wheels bolts on your vehicle.
• Always maintain the correct tightening torque for the wheel
bolts to reduce the risk of a wheel loss. If the tightening torque of
the wheel bolts is too low , they can loosen and come out when the
vehicle is moving . If the tightening torque is too high, the wheel
bolts and th reads can be damaged and the wheel can become
loose .
0 Note
The specified torque for the wheel bolts is 90 ft lb (120 Nm) with a
t ole ranc e of ± 7,4 ft lb(± 1 0 Nm). To rque whee l bolts diag onally.
After changing a wheel, the torque must be checked as soon as possible with a to
rque wrench -preferab ly by an authorized Audi
dea ler o r qu alif ied wo rksh op.•
Low aspect ratio tires
Yo ur Audi is fac tory-equip ped wi th l ow asp ect rati o tires. Th ese tires
have been thorough ly tested and been selected specifically for your
mod el for thei r su per b p erfo rma nce, road feel an d handl in g u nder
a variety of driving conditions . Ask your author ized Aud i dea ler for
mo re deta ils.
T he low aspec t ra tio o f th ese t ires is ind icate d by a numera l o f 55 or
less in the t ire's size designation. The numera l represents the ratio
of the ti re's s idewa ll height in re la ti on to its tread w idth e xpress ed
in percentage. Conventiona l tires have a height/width ratio of 60 or
mo re .
The performan ce of low -aspect -ratio t ires is part icularly sensitive to
improper inflation pressure . It is therefore important that low
aspect ratio tires are inflated to the specified pressure and that the
inflation pressure is regularly checked and maintained. Tire pres­
sures should be checked at least once a month and alway s before a
long trip::::;,
page 244, "Checking tire p ressure".
What you can do to a void tire and rim damage
L ow a spect ratio tires can be damaged more easi ly by impact with
potho les, curbs, gull ies or ridges on the road, particularly if the t ire
is underinflated.
In orde r to minimi ze the occurrence o f im pact da mage to th e tire s
of your vehicle, we recommend that you observe the fo llowing
p reca utions:
• Always ma intain reco mm ende d inflat io n pressu res . C heck your
tire p ressure every 2, 000 miles (3 ,000 km) and add ai r if neces sary .
• D rive car eful ly on roads with potholes, deep gullies or ridges.
Th e impact from d riving th ro ugh o r ove r such o bstac les can
dama ge you r tires . Impact w ith a curb may also cause da mage to
your tires . .,_

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•
• After any impact, immediately inspect your tires or have them
inspected by the nearest authorized Audi dealer. Replace a
damaged tire as soon as possible .
• Inspect your tires every 2,000 miles (3,000 km) for damage and
wear . Damage is not always easy to see. Damage can lead to loss of
air and underinflation, which could eventua lly cause tire fai lure . If
you believe that a tire may have been damaged, replace the tire as
soon as possible .
• These tires may wear more quickly than others.
• Please a lso remember that, whi le these tires deliver responsive
handling, they may ride less comfortably and make more noise than
other choices.
R edu ced p erform an ce in w in te r/ c o ld sea son
co nditi ons
All tires are designed for certain purposes. The low aspect ratio,
ultra high performance tires originally installed on your vehicle are
intended for maximum dry and wet road performance and hand ling.
They are not suitable for cold, snowy or icy weather conditions . If
you drive under those circumstances, you should equip your vehicle
with al l- season or winter tires, which offer better traction under
those conditions . We suggest you use the recommended snow or
a ll- season tires specified for your vehicle, or their equivalent .
Refer to=>
page 254 for more detai led in formation regarding winter
tires. •
Run-flat tires
Applies to vehi cles : w ith R un-f lat tires
Introduction
Run-flat tires help keep you moving if a tire goes flat.
Reinforced s idewalls give the ti res run -flat capability if tire pressure
is lost . We recommend that run-flat tires only be mounted on vehicles that
we
re origina lly equipped with these special tires at the fac tory and
have a Tire Pressure Monitoring System .
Run-flat t ires can be ident ified by the letter s "RSC" on the tire side ­
wall.
If you do change the tires on your vehic le from normal to run -flat
tires, you must buy the special rims required for run-flat tires, and
the Tire Pressure Monitoring System must be reprogrammed by an
authorized Audi dea ler or other qualified workshop.
Wh at do run-fl at tir es do?
These special t ires have run-flat capabi lities that he lp keep you
moving if a tire loses pressure and goes flat. Under favorable condi ­
t ions tires can be driven
at least 30 miles (50 km ), but you must not
drive
f as ter t han 50 mph (80 km/h i=> page 258 , "Driving with run ­
flat t ires".
The Tire Pressure Moni toring System constantly checks the air pres­
sure in the tires. If the run -flat system is active (shown in the center
display), you must inspect the affected tire or tires and then decide
whether to continue driving . Be sure to follow these tips
=>
page 258, "Driving with run-flat tires" .
When it is not po ssibl e to continue driving , even with
run -fl at tire s?
• If the Electronic Stabilization Program (ES P) is not working or
keeps coming on.
• If the Tire Pressure Monitoring System does not work.
• If the tire has been severely damaged, in a crash , for example .
The tread can separate from a damaged tire as the wheel turns, and
hit parts of the vehicle , such as the fue l tank filler neck, fuel lines or
brake lines.
• Do not continue driving if severe vibration occurs or if the tire
starts to smoke because the tire is running hot.
• Do not continue driving if damage to the tire, such as cracks in
the s idewall, appears .
~
Vehicle care I t •

-Tires and wheels
---------------------------------------------
& WARNING
Improper use of run-flat tires can cause vehicle damage that can
lead to loss of vehicle control, a crash and serious personal injury.
• Run-flat tires can only be used with special rims.
• Run -flat tires must always be monitored with a properly
programmed Tire Pressure Monitoring System.
• Always inspect a tire that has lost air to make sure it is safe to
drive with the tire in the run-flat mode .
• Never drive with run-flat tires that have been damaged in a
collision.
• Never drive with run-flat tires if heat build-up causes the tire to
give off smoke.
• Never drive with run-flat tires if the vehicle shakes or vibrates
severely.
• Never drive with a run-flat tire that develops sidewall cracks or
other damage while in use.
0 Note
Run -flat tires have special characteristics and requirements, that are
very different from conventional tires . Run-flat tires require special
rims for run -flat use and cannot be used on conventional wheel
rims .
[ i] Tips
• If you are not able to continue driving with run-flat tires, please
seek professional assistance.
• Please contact your authorized Audi dealer or Audi of America,
Inc. if you have questions about tires and rims. •
Applie s t o vehic le s: wi th Run -flat tires
Driving with run-flat tires
Handling characteristics change when tire pressure is
low.
Driving on tires with low tire pressure changes the way a
vehicle handles, particularl y when cornering and braking.
The handling characteristics of run-flat tires do not seem to
change a lot even when driving on low pressure or in the
run -flat mode . Nevertheless you must still take special
precautions when operating a vehicle on run-flat tires when
tire pressure is low o r the tire(s) is flat:
- The Electronic Stabilization Program (ESP) must be
switched on.
- Never drive faster than 50 mph (80 km/h)~ &.
- Plan ahead when driving and anticipate what you will
have to do considering traffic and road conditions up
ahead.
- Accelerate carefully.
- Avo id unnecessary and sudden steering and braking
maneuvers .
- Reduce your speed in plenty of time before intersections,
curves and other places where you may have to react
quickly.
P lease see:=:, page 257, "When it is not possible to continue driving,
even with run-flat tires?" ..,_

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•
Handling characteristi cs change wh en dri ving with
low air pressure or with flat tires even with special run ­
flat tires
A low pressure or flat front tire affects vehicle hand lin g charac te ri s­
t ics by pulling the vehic le slightly to the side where the tire is
mounted and reduces brak ing performance .
A low pressure or flat
rear tire also affec ts driving c haracteristics by
pul ling to the side where th e tire is mounted and also reduces
b raki ng per for mance . T he ef fec t o n ve hic le han dlin g is most n otice ­
able when driving around curves .
& WARNING
Changed vehicle handling characteristics when driv ing in the run­
flat mode can cause lo ss of vehicle control , a crash and serious
personal injury .
• Driving on special run-flat tires in the run -flat mode will change
vehicle handling characterist ics during braki ng , when cornering
and under heavy acceleration .
• Never drive faster than the max imum rated speed of 50 mph
(80 km /h) when driving in the run -flat mode .
• Always adjust vehicle speed to traffic , road and weather condi­
tions and drive slower than the maximum rated speed if nece ssary
weather and road conditions are taken into ac count .
• Always obey speed limits and other traffic laws .
0 Note
We always recommend driv ing with even more care when using
these special tires in the run -flat mode. A lways avoid sudden
m aneuvers. •
Applies to vehic les: with Run-f lat tires
Replacing run -flat tires and rims
Y our vehicle was especi ally des igned to use special run­
fl at t ires.
You may use and c ombi ne o nly approved run -flat t ires a nd specia l
matching rims that have been designed for run -flat tires. Mounting
special run -fla t tires o n stan dard wheels w ill not work and wi ll not
provide the advantages fo the run -falt feature. Never us e special
run-flat tir es o n standard whee l rims.
After driving with a tire in the run -f lat mode, always have the vehicle
and affected tire(s) and rim(s) inspected by an a uthorized Audi
dea ler. T ires tha t have been driven i n the run -fla t mode mus t be
replaced.
& WARNING
Use of damaged run-flat tires and rims c an cause vehicle damage
that can lead to loss of vehicle control , a crash and serious
personal injury.
• Always have the vehi cle and affected tire (sl and rim(s )
inspe cted by an authorized Audi dealer after driving a tire in the
run -flat mode .
• Tires that have been driven in the run -flat mode must be
repla ced .•
Vehicle care
I t •

11111...__W_ h_ a _ t_d_ o_ l _d _o_ n_ o_ vv_ ? ______________________________________________ _
What do I do now?
Trunk escape handle
In case of an emergency, the rear lid can be opened from
the inside using the trunk escape handle.
F ig . 165 Lug gag e
co mp artm ent: T runk
escape handl e
- To open the trunk lid pull the hand le down as indicated
by t h e -arrow -~ fig. 165.
The trunk escape handle inside the storage compartment is made
of fluorescent materia l to glow in the dark.
& WARNING
The tr un k es cap e handl e is to b e use d onl y in an em ergen cy. •
Vehicle tool kit
The tools are st ored underneath the floor panel in the
luggage c ompartment.
Fi g. 16 6 Lugga ge
co mpa rtm ent : ve hic le
t o ol kit
- Sw ing the luggage compartment floo r upwards .
- Remove the ve hicle tool kit .
The onboard tool ki t includes:
• Hook for removing wheel covers *
• Plastic clip to remove wheel bolt covers*
• Wheel bolt wrench
• Alignment pin for changing wheels
• Screwdriver wi th reversible blade
• Replacement bit (r eve rsible Torx bit for changing lamps)
• Open ended wrench 10 x 13
• Towing eye
Note: some of the on board items listed above are prov ided on
certain models only or a re optional extras.