2008 AUDI TT ROADSTER load capacity

Instruments and warning/indicator lights
& WARNING
• Always observe the warning in=;, page 212, " Engine compart ­
ment" before opening the engine hood and checking the engine
coolant level.
• Never open the engine hood if you see or hear steam , or if you
see engine coolant dripping from the engine compartment . You
c ould burn your self. Let the engine cool off first so that you cannot
hear or see any steam or engine coolant .
0 Note
• Mounting additiona l lights or accessories in front of the a ir inlets
reduces the co oling effect of the radiat or. At high outside tempera ­
tures or h igh engi ne load, the eng ine could overheat.
• The fron t spoile r has been designed t o properly dis trib ute the
coo ling air when the veh icle is mov ing . If the spo iler is damaged,
this could red uce the coo ling effect and the engine co uld then ove r­
heat. Ask your authorized Audi deale r for assistance. •
Fuel gauge
The fuel gauge wor ks only when the ignition is on .
When the needle reaches the red area, the warning light in the i nstrument cluster w ill illu m ina te =;,
page 35 . Thi s means yo u
have approx imate ly 1.9 gallons (7 litres) of fuel left in the tank.
Time
to refuel!
The tota l tank capacity of your vehicle is listed in=;, page 297. Be
awa re of the diffe rent ta nk capaci ties of front -wheel a nd q uat tro®
a ll- w hee l d ri ve models .
0 Note
Never run the tank comple tely dry! An irre gular suppl y of fuel can
cause engine m isf iring and fuel could enter into the exhaust system.
The catalytic converter could then overheat and be
damag ed. •
Speedometer with odometer
The speedometer shows y ou t he vehic le speed, and the
o dome ter sho ws you ho w ma ny m iles (kilo meters) yo u
have dri ven.
Fig . 4 Speedomete r
close -up : odomet er
displ ay
T he od ometer an d trip odo mete r are locate d insid e th e spe edom­
eter .
• USA model s - Miles
• Canada mode ls - Kilometers
Lower odometer
The lower odometer shows the total number of miles (kilometers)
d riven.
Upper odometer (trip odometer )
The upper o dometer shows the tota l number o f mi les ( kilom eters)
driven since you last reset the odometer bac k to ze ro . You can use
thi s odomete r w hen you want to keep track of how ma ny m iles ( kilo­
meters) you have driven for a single trip or errand. The last digit indi ­
cates 1/10 of a m ile (10 0 meters). You ca n set t he trip od o meter back
to zero by pressing the reset button
=;, fig . 4 . ..,,

Driver inf ormation sy ste m
Storing tire pressures
Correct storage of specified pressure is the basic require­
ment for reliable tire pressure monitoring.
F ig . 29 S ET -butt on:
T ire pressure mon i­
t or ing syste m
In order for the tire pressure monitori ng system to operate
appropr iately, you have to re-save the specified p ressures
whenever you adjust tire pressures, for example when the load co nd ition of your vehicle changes. Proceed as fo llows:
Corr ecting tir e pr es sure
Check the pressure in the t ires.
- Adjust air pressure as needed to comply w ith the infor­
mat ion on the label located on the driver's side B -pillar
(visible when the door is open) .
Saving tire pressures
-Turn on the igniti on.
- Press the button :::> fig. 29 for app rox imately 5 seconds.
You will hear a beep and the symbol in the instrument
cluster flashes three t imes .
All pressure warning indicators in the d isplay will be canceled. Following each intentional change in specified pressures, ti
re pres ­
sures must be resaved.
After the pressures are saved, the tire pressure monito ring system
measures the current tire pressures and saves them as the new
spec ified pressures .
[ i ] Tip s
• The tire pressure is shown on the tire pressure labe l. The tire
pressur e lab el is located on the driv er's sid e B-pillar (visible when
the door is open). The tire pressure label l ists the recommended
cold tir e inflation pr essur es for the vehic le at its maximum capacity
weigh t and the tires that were on your vehicle at the time it was
manufactured . For recommended tire pressures for norma l load
conditions, please see chapter~
page 242.
• The tire pressure monitoring syst em he lps the driver to keep an
eye on tire pressures. But the driver still has the responsibility for
maintaining the cor rect tire pressure .•
Wheel change
If a wh eel is ch anged , the wheels tha t were exchan ged
have to be re -programmed.
- Tu rn on the ignition.
- Press the button :::> fig. 29 for approximately 5 seconds .
You will hear a beep and the symbol in the button flashes
three times.
Programming is necessary :
• after the t ires have been rotated on the vehicle, or the spare tire
is used,
• if tires with new wheel sensors are used .
All pressure warning indicators in the disp lay wil l be canceled . The
system malfunction error message will not disapp ear until the .,_

_1--_l_ n _t _ e _ll _,ig ,_,_ e_n _t _ t_ e_ c_ h_n _o_ l_ o ~g""- y.e- __________________________________________ _
Intelligent technology
Notice about data recorded by
vehicle control modules
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders".
Some state laws restrict the retrieval or downloading of data stored
by EDR's that were installed in a vehicle for the express purpose of
retrieving data after an accident or crash event w ithout the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehic le-related data
during norma l vehicle opera tion for diagnostic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehic le speed, direction,
braking as well as restraint system use and performance in the
even t of a crash or other condition . Stored data can only be read and
downloaded with special equipment.
Electronic Stabilization Program (ESP)
Genel'61
The Electronic Stability Program increases driving
sta bility.
Fig . 142 Cente r
cons ole with ESP
sw itch
With ESP, control over the veh icle is increased in situations when
the vehicle is close to the limits of grip, such as during acce leration
and in curves. ESP reduces the risk of skidding a nd improves vehicle
stability under all road conditions . It operates at all speeds .
The Anti-Lock Brake System (ABS), E lec tronic Differentia l Lock (EDS)
and Anti-Slip Regulation System (ASR) are integrated in the Elec­
tronic Stability Program .
H ow ESP work s
The ESP control unit processes the following data from high-sensi ­
tive sensors: the rotational speed of the vehicle about its vertica l
axis, fore -and -aft and lateral acceleration forces, brake pressure and
steering angle.
Using steering ang le and vehicle speed, the direction the driver
wishes to travel is determined and continuously compared with
actual vehicle behavior . If the two do not match, for example when

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ l'III
•
& W ARNING (continu ed )
crashes and serious personal in jur ies . Have worn or da maged t ires
replaced immediately .
• Tires age even if they are not being u sed and can fail suddenly ,
especially at high speeds. T ires that are more than 6 years old can
only be used in an emergency and then w ith special care and at
low speed.
Glossary of tire and loading terminology
Accessory weight
means the co mbined we ig ht ( in excess o f those sta nda rd items
which may be rep laced) of automatic transmission, power steering,
power brakes, power w indows, powe r seats, rad io, a nd heater, to
the extent that these items are avai lab le as factory-installed equip­
m ent (w hether insta lled or not).
Aspect ratio means t he ratio o f th e height to t he w idt h of the tire in perce nt.
N umbers of 55 or lower indicate a low sidewa ll for improved
steer ing respo nse and b ette r overall ha ndl ing on dry pave ment.
Bead
means the part of the tire that is made of stee l wires, wrapped or
reinforced by ply cords and that is shaped to fit the rim.
Bead separation
means a breakdow n of the bond be tween co mponents i n the bead.
Cord
m eans the strands fo rmi ng the plies in the ti re.
& W ARNING (continued )
• Never mount used tires on your vehicle if you are not sure of
their "previous history. " Old used t ire s may ha ve been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and lo ss of vehicle control.
• If you noti ce unusual vibration or if the vehicle pulls to one side
when driving , always stop as soon as it is safe to do so and check
the wheels and tires for damage . •
Cold tire inflation pressure
mea ns t he ti re pressure reco mm ended by the ve hicle ma nufacturer
for a tire of a designated size that has not been d riven for more tha n
a cou ple o f miles (k ilometers) at low speeds in t he t hre e ho ur per iod
before the tire pressure is measured or ad justed .
Curb weight
means the weight of a moto r vehic le with standard equipment
i nc lud ing the max imu m capac ity o f fue l, o il, and coola nt, a ir c ond i­
tioning and additiona l weight of optional equipment.
Extra load tire
means a tire designed to ope rate at higher loads and at higher infla­
tion pressures than the corresponding standard tire. Extra load tires
my be identified as "XL", "xi", "EX TRA LOAD", or "RF" on the side ­
wa ll.
Gross Axle Weight Rating ("GAWR ")
means the load -carrying capacity of a sing le ax le system, measured
at the ti re -ground interfaces.
Gross Vehicle Weight Rating ("GVWR "l
mea ns the ma ximum tot al l oade d weigh t of the vehicle.
Vehicle care
I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Groove
means the space between two adjacent tread ribs.
Load rating (code)
means the maximum load that a tire is rated to carry for a given
inflation pressure . You may not find this information on all tires
because it is not required by law.
Maximum load rating
means the load rating for a tire at the maximum permissible infla­
tion pressure for that tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure to which a tire may be
in flated. Also called "maximum inflation pressure ."
Normal occupant weight
means 150 lbs. (68 kilograms) times the number of occupants
seated in the vehicle up to the total seating capacity of your vehicle.
Occupant distribution
means distribution of occupants in a vehicle .
Outer diameter
means the overall diameter of an inflated new tire.
Overall width
means the linear distance between the exteriors of the sidewalls of
an inflated tire, including elevations due to labeling, decorations, or
protective bands or ribs .
Ply
means a layer of rubber -coated parallel cords.
Production options weight
means the combined weight of those installed regular production
options weighing over 5 lbs. (2.3 kg) in excess of those standard
items which they replace, not previously considered in curb weight
or accessory weight, including heavy duty brakes, ride levelers,
heavy duty battery, and special trim.
Radial ply tire
means a pneumatic tire in which the ply cords that extend to the
beads are laid at substantially 90 degrees to the centerline of the
tread.
Recommended inflation pressure
see =:> page 239, "Cold tire inflation pressure".
Reinforced tire
means a tire designed to operate at higher loads and at higher infla­
tion pressures than the corresponding standard tire. Reinforced
tires my be identified as "XL", "xi", "EXTRA LOAD", or "RF" on the
sidewall.
Rim
means a metal support for a tire or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the bead seat. If you change your wheel
size, you will have to purchase new tires to match the new rim diam ­
eter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges .

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•
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 •

___ T_ i_ r_e _s_ a_ n_ d_ w_ h_ e_ e _ ls _________________________________________________ _
Occupant loading for vehicle normal load (no luggage)
Designated seating capacity , number of occupants
2
Cold tire inflation pressure
Vehicle normal load (no luggage ), number of occupants
2 •
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 160 Tire pressure
label: located on
driver's side B-pillar
Tire pressure generally refers to the amount of air in a tire that it
needs it to do its job and safely carry the combined load of the entire
vehicle and its contents. Tire pressure is measured in kilopascals
(kPal, the international measuring unit and in pounds per square
inch (PSll. Tire pressure is based in part on the vehicle's design and
load limit -the greatest amount of weight that the vehicle can carry
safely and the tire size . The proper tire pressure is frequently
referred to as the "recommended cold tire inflation pressure." Air in
the tires expands when the tire heats up because of internal friction
when it flexes in use. The tire pressure is higher when the tire has
warmed up than when it is "cold." It is the inflation pressure in a
"co ld" tire that counts. Therefore, you should never let air out of a
warm tire to match "cold tire inflation pressure" recommendations.
The tires would then be underinflated and could fail suddenly.
Main taining proper tire pressure is one of the most important
things you can do to help avoid sudden tire failure. Underinflated
ij
--~--------------- j
.(SEATING CAPAOn':jorAL l :FRONT l '.CENTER I '.REAR I )
The combmedwolghl "'°"'""""ond a,gor.hould ,_ l'>CC TIRE SIZE COLO TIRE PRESS URE
FRO l'rr -KPa, - PSI
REAR -KPa, - PSI
~ A_ R _ E i..===..=;;;..;.;; KP..;;a, :.=;;;;;..;.. PS;;..;.I_
MANUAL FOR
ADDITIONAL
I N FORMATION SEE OWNER'S I
Fig. 161 Tire pressure
label
tires are a major cause of sudden tire failure. Keeping tires at the
right pressure is also important for safe and responsive vehicle
handling, traction, braking and load carrying .
Tire pressures are
particularly important when the vehicle is being driven at higher
speeds, and then especially when heavily loaded even within the
permissible load-carrying capacities approved for your vehicle.
The recommended tire pressures for your Audi depend on the kind
of tires on your vehicle and the number of passengers and/or
amount of luggage you will be transporting.
The tire pressure label located on driver's side B-pillar on your Audi
lists the recommended cold tire inflation pressures for the vehicle
at its maximum capacity weight and tires that were on your vehicle
at the time it was manufactured .
If you wish to improve comfort when operating the vehicle at
normal load (no luggage) up to 2 occupants, you can adjust tire
pressures to those specified for normal vehicle load. Before oper-
i.,.

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ __
•
ating the vehicle at ma ximum load , you must increase the t ire pre s­
sures to those specified for maximum vehi cle load
~ & .
Bear in mind that the t ire pressure mo nitoring system can only
monitor the tire pressures you have stored . The system does not
reco gnize the load cond itio n of your vehicle.
T he effectiveness of the tire pressure monitoring system will be
impaire d if you stor e nor mal loa d pressures but then operate the
vehic le at its maximum load~&. See the
illustration~ page 242, fig. 160 for the location of the label
on driver's si de B -pillar (co lor of the ac tual label a nd exact loca tion
on the veh ic le will vary slightly).
N ote that the following tab le is accu rate at the time of going to
press and is subject to cha nge . In t he event o f discrepancies, the t ire
pressure label (on driver's side B -pillar) a lways takes precedence .
The table belo w lists t he r ecom mend ed cold tire i nflatio n pressures
for the Audi mode l covered by your Owner's Literature at the
vehic le' s capacity weigh t and the tire size s insta lled o n the respec ­
tive models as original equipment , or as a factory option .
Engine Tire designation
Tire pressure front II Tire pressure rear
(displace -
= " full load full load
ment in normal load
condition normal
load
condition
liter ) condition
(up to condition (up
( 2 oc cupants (2 occupants
2 o ccupants ) to 2 occupants)
plus luggage) plus luggage)
I
PSI II kPA PSI II kPA II PSI II kPA
PSI I[ kPA I
I
4-cylinder
225/50 R17 94H All Season 32 220 3 2 220 29 200 29 200
2.0
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93Y XL High Performance 32 220 32 220 29 200 29 200
255 /35 R19 95Y XL High Performance 32 220 32 220 29 200 29 200
6 -cylinder 245/45 R17 95H All Season 3 2 220 32 2 20 29 200 29 2 00
3.2
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93V XL High Performance 32 220 3 2 220 29 200 29 200
255/35 R19 95V XL High Performance 32 2 20 32 220 29 200 29 200
XL = reinforced
T he correct tire pressure for the spare wheel is located on a label on the tire p ressure label on your vehicle with the tires on your vehic le.
t he d river's s ide B -pilla r. Make sure that the tire s ize inf ormat ion on t he veh icle labe l is t he
Because technical changes may be made to vehicle equipment same as the si
ze of the tires on the vehicle. This is especially impor -
t ant if the ve hicle belongs to so meo ne else or you bought the
dur ing th e mode l year, always co mpare the tire size designa tion on
Vehicle care
I t •
.,