2009 AUDI S3 fuel pressure

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Sidewall
means that portion of a tire between the tread and bead.
Speed rating means the speed at which a tire is designed to be driven for
extended periods of time. The ratings range from 93 mph (150 km/h)
to 186 mph (298 km/h)=>
page 257. You may not find this informa ­
tion on a ll tires because it is not required by law.
The speed rating letter code, where applicable, is molded on the tire sidewa ll and indicates the maximum permissible road speeds.=>
&
in "Winter tires" on page 260
Tire pressure monitoring system*
means a system that detects when one or more of a vehicle 's tires
are under inflated and illuminates a low tire pressure warning te ll­
tale.
Tread
means that portion of a tire that comes into contact with the road.
Tread separation
means pu lling away of the tread from the tire carcass.
Treadwear indicators (TWI)
means the projections within the principa l grooves designed to give
a visual indication of the degrees of wear of the tread . See
=>
page 254, "Tread Wear Indicator (TWI)" for more information on
measuring tire wear .
Uniform Tire Quality Grading
is a tire information system developed by the United States National
Highway Traffic Safety Adm inistration (NHTSA) that is designed to
help buyers make relative comparisons among tires. The UTQG is
not a safety rati ng 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 comb ine with other
considerations, such as price, brand loyalty and dealer recommen- dations
. Under UTQG, tires are graded by the tire manufacturers in
t hree areas : treadwear, traction and temperature resistance. The
UTQG information on the tires, molded into the sidewalls.
U .S . DOT Tire Identification Number (TIN )
This is the tire's "seria l number" It begins with the letters "DOT" and
indicates that the tire meets a ll 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 ­
ture. For example,
DOT ... 2207 ...
means that the tire was produced in the 22nd week of 2007. The
other numbers are marketing codes that may or may not be used by
the tire manufacturer. This information is used to contac t
consumers if a tire defect requires a reca ll.
Vehicle capacity weight
means the rated cargo and luggage load plus 150 lbs . (68 kilograms)
t imes the vehicle's tota l seating capacity as listed on the label
located either on the driver's side 8-pillar or on the inside of the fuel
filler flap.
Vehicle maximum load on the tire
means that load on an individual tire that is determined by distrib­
uting to each axle its share of the maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual tire that is determined by d istrib­
uting to each axle its share of the curb weight, accessory weight,
and normal occupant weight (distributed in accordance with table
below=>
page 2471 and dividing by two. .,_

________________________________________________ T_ i_ r _e _s _ a_n_ d_ w_ h_ e_e _l_s _ ........
Occupant loading and distribution for vehicle normal load for various designated seating capacities
Designated seating capacity, num­
ber of occupants Vehicle normal load
, number of
occupants Occupant distribution in a normally
loaded vehicle
5 3
2 in front,
1 in back seat
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 180 Tire pressure
label: located either on
driver's side B-pillar or
inside the fuel filler flap
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
(kPa), the international measuring unit and in pounds per square
inch (PSI). 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
"cold" 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.
i
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TIRE AND LOADING INFORMATION
TIRE SIZE COLO TIRE PRESSURE
F RONT -KPa, -PSI
REAR -KPa, -PSI
SPARE -KPa, - PSI
MANUAL FOR
INFORMATION SEE OWNER'S I
ADDITIONAL
Fig. 181 Tire pressure
label
Maintaining proper tire pressure is one of the most important
things you can do to help avoid sudden tire failure. Underinflated
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.
On USA vehicles, the tire pressure label is located on driver's side 8 -
pillar. On Canada vehicles, the tire pressure label is located either on
the driver's side 8 -pillar or inside the fuel filler flap . The tire pressure
•
label lists the recommended cold tire inflation pressures for the _,,,
Vehicle care I I irechnical data

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
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 (up to 3 occupants), you can adjust tire pressures to
those specified for normal vehicle load. Before operating the vehicle at maximum load, you must increase the tire pressures to those
specified for maximum vehicle load
=> &.
Bear in mind that the tire pressure monitoring system* can only
monitor the tire pressures you have stored. The system does not
recognize the load condition of your vehicle.
The effectiveness of the tire pressure monitoring system* will be impaired if you store normal load pressures but then operate the
vehicle at its maximum load=>&. See
the illustrat ion=>
page 247, fig. 180 for the location of the label
either on driver's side B -pillar or inside the fuel filler flap (color of
the actual label and exact location on the vehicle will vary slightly).
Note that the following table is accurate at the time of going to
press and is subject to change . In the event of discrepancies, the tire
pressure label (on USA vehicles, the tire pressure label is loc ated on
driver's side B-pillar; on Canada vehicles, the tire pressure label is
loca ted either on the driver's side B-pillar or inside the fue l filler
flap.I always takes precedence.
The table below lists the recommended cold tire inflation pressures
for the Audi model covered by your Owner's Literature at the
vehicle's capacity weight and the tire sizes installed on the respec­
tive models as original equipment, or as a factory option.
Engine
(displace ­
ment in
liter)
Tire designation Tire pressure front
Tire pressure rear
4-cylinder
2.0
205/55 R16 91 H All Season
225/45 R17 94H XL All Season
225/45 R17 94W High Performance
225/45 R17 94Y XL High Performance
225/40 R18 92H XL All Season
225/40 R18 92Y XL High Performance
Compact spare wheel T125/70 R18 normal load
condition (up to
3 occupants)
PSI
36 250
38 260
35 240
35 240
38 260
38 260
60 420
full load
condition
kPA
39 270
39 270
38 260
36 250
41 280
41 280
60 420
normal load
full load
condition (up
condition to 3 occupants)
kPA kPA
30 210
38 260
32 220 38 260
30 210
36 250
30 210
35 240
35 240 41 280
35 240 41 280
60 420
60 420

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ lJlll
•
Engin e Tire designation Tire pressure front Tire pressure rear
(displace- normal load normal load
ment in full load
full load
liter ) c
ondit ion (up to
condition c
ondition (up
condition
3 occupants ) to 3 occupants)
PSI PSI kPA PSI kPA kPA
6-cylinder 225/45 R1 7 94H XL All Season 39 41 280 230 41 280
3 .2
225 /45 R17 94V XL High Performance
36 250 38 260 30 2
10
38 260
225 /40 R18 92H XL All Season
4 1 280 44 300 36 250 44 300
225 /40 R18 92V XL High Performance 41 280 44 3 0 0 36 250 44 30 0
Compact spare wheel T125 /70 R18
60 420
60 420
60 4
20
60 420
XL=
reinforced o r extra load tire . It may also appear a s xi , EXTRA LOAD, or RF on t he ti re s id ewa ll.
The correct tire pressure fo r t he spare wheel is located on a label
either on the driver's side B-pi llar or inside th e fuel filler flap .
Beca use technical change s may be ma de to vehicle equip ment
during the mode l year, always compare the tire size designat ion on
the tire p ressure label on your vehic le with the ti res on you r vehicle.
Make sure that the tire size informat ion on the veh icle labe l is the
same as the size of the tires on the vehicle . T his is especially impor ­
t ant if the veh icle belongs to someone else or you bough t the
vehic le with different rims/tires or you bought the vehicle as a previ ­
ousl y owne d ve hicle.
Remember , your safety and that of your passengers a lso depends
o n mak ing s ure tha t loa d limits are not exceeded . Vehicle load
includes everybody and everything in and on the vehic le. These load
limits are technical ly referred to as the vehicle's Gross Vehicle
Weight Rating ( "GVWR"). The Gross Axle Weight Rating ("GAWR") is
the maximum load that can be applied at each of the vehicle's two
a xl es . T he Gross Vehic le W eight Rat ing and the Gross A xle Weight
Rating are listed on the safety compliance sticker labe l located
ei the r on the driver's s ide B -pi ll ar or on the i nside of the fuel fill er
flap . T he tire pressure labe l on your Audi lists the maximum
co mbined weig ht o f all of the occupants a nd luggage or oth er ca rgo that t
he ve hicle can carry . For the locatio n of the ti re p ressure la bel
=> page 247, fig. 180.
& WARNING
Overloading a vehicle can cause loss of vehicle control , a crash or
other accident , serious personal injury, and even death .
• Carrying more weight than your vehicle wa s designed to carry
will prevent the vehicle from handl ing properly and increase the
ri sk of a 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 vehi cle that has been overloaded can fail suddenly
cau sing loss of control and a crash.
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehi cle heavier than the
vehicle 's Gross Vehicle Weight Rating. _,.
Vehicle care
I t •

.,,.___T_ ir_e_ s _ a_ n_d_ w_ h_ e_e _ l_s _________________________________________________ _
& WARNING
• Incorrect tire pressures and/or underinflation can lead to a
serious or fatal accident.
• Incorrect tire pressures and/or underinflation cause increased
tire wear and can affect the handling of the vehicle.
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control. •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
either on driver's side 8-pillar or inside the fuel filler flap.
The recommended tire pressures are on the tire pressure label and
in the table=> page 247, "Cold tire inflation pressure". This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of miles (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as 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 "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Cold tire inflation
pressure" recommendations=>
page 247. The tires would then be
underinflated and could fail suddenly.
The tire pressure label on your Audi lists the recommended cold tire inflation pressures for the new, original equipment tires that were
on your vehicle at the time it was manufactured. For the location of
the label=>
page 247, fig. 180.
Most tires lose air naturally over time. They can also lose some air if
you drive over a pothole or hit a curb while parking. It is usually not possible to see whether the radial tires used today are underinflated
just by looking at them.
Therefore , be sure to check tire pressures at least once a month and
always before going on a long trip. Make sure to take the number of
people and the amount of luggage into account when adjusting tire
pressure for a trip -even one that you would not consider to be
"long." See=>
page 251, "Tires and vehicle load limits" for more
important information .
Always use an accurate tire pressure gauge when checking and
adjusting inflation pressures . Check all of the tires and be sure not
to forget the spare tire. If the pressur e in any tire is too high when
the tire is "cold," let air out of the tire slowly with the edge of the tire
gauge and keep checking the pressure until you reach the pressure
that is correct for the load (passengers and luggage) and kind of
driving you plan to do.
If the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
that you need to reach the correct pressure for the vehicle load
(passengers and luggage) for the tires on your vehicle as listed on
the on your vehicle and in this manual and the kind of driving you
plan to do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason.
Remember that the vehicle manufacturer, not the tire manufacturer,
determines the correct tire pressure for the tires on your vehicle.
It is important to check the tire pressure when the tires are cold.
• Read the required tire pressure from the tire pressure label. On
USA vehicles, the tire pressure label is located on driver's side B­
pillar. On Canada vehicles, the tire pressure label is located either on
the driver's side B-pillar or inside the fuel filler flap.
• Turn the valve stem cap counter-clockwise to remove it from the
tire valve.
• Plac e the air pressure gauge on the valve. .,_

Tires and wheels -
----------------
•
• The tire pressures should only b e chec ked and ad just ed wh en
t he tire s are co ld. The s lig ht ly rai se d pre ss u res of w arm tires mu st
not b e reduced .
• Adjust t he tire pressure to the lo ad you ar e carrying.
• Reinstal l the va lve stem cap on the va lve .
When should I check the tire pressure?
The correc t ti re p ress ure is es pec ially im portant a t high speeds. The
press ure s hou ld t here fore be checked at least once a mo nth and
a lways before starting a journey. Do not forget to check the tire pres ­
su re for t he spare whee l=>
page 2 71.
When should I adjust the tire pressures?
Ad just the tire pressure to the load you are carryin g. After c han ging
a whee l
or replacing whee ls you have to adj ust th e tire pre ssu re s on
a ll w he el s. In add itio n, you must the n initialize the new t ire pres ­
su res in the tire pressure monitoring system*=>
page 264.
& WARNING
Incorrect tire pressures and /or underinflation can lead sudden tire
failure , loss of control, collision, serious personal injury or even
death .
• When the warning symbol
l.J appears in the instrument
cluster , stop and inspect the tires .
• Incorrect tire pressure and /or underinflation can cause
increased tire wear and can affect the handling of the vehicle and
stopping ability .
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure , including a blowout and sudden deflation ,
causing loss of vehicle control .
• The driver is responsible for the correct tire pressures for all
tires on the vehicle. The applicable pressure values are located on a st icker on the dr iver 's side B -pillar or on the inside of the fuel
filler flap.
& WARNING (continued )
• Only when all tires on the vehicle are filled to the correct pres­
sure, the tire pressure monitoring system * can work correctly.
• The use of incorrect tire pressure values can lead to accidents
or other damage . Therefore it is essential that the driver observe
the specified tire pressure values for the tires and the correct pres­
sures for the function of the tire pressure monitoring system *.
• Always inflate tires to the recommended and correct tire pres­
sure before driving off.
• Driving with underinflated tires bend more , letting them get
too hot resulting in tread separation , sudden tire failure and loss
of control.
• Excessive speed and /overloading can cause heat build -up ,
sudden tire failure and loss of control.
• If the tire pressure is too low or too high , the tires will wear
prematurely and the vehicle will not handle well .
• If the tire is not flat and you do not have to change a wheel
immediately, drive at reduced speed to the nearest service station
to check the tire pressure and add air as required .
0 Note
Driving without valve stem caps can cause damage to the tire
va lv es. To p revent this, a lways mak e su re that fac to ry insta lled va lve
stem caps on al l wheels a re sec urely mounted on the va lve .
Underinflated t ires wi ll a lso increase the fue l consumption. •
Tires and vehicle load limits
There are limits to the amount of load or weight that any vehicle and
any tire can ca rry. A ve hicle tha t is ove rlo ade d wi ll not h and le w ell ..,
Vehicle care I t •

-Tires and wheels
P'tr:1-------------------
and is more difficult to stop. Overloading can not only lead to loss
of vehicle control, but can also damage important parts of the
vehicle and can lead to sudden tire failure, including a blowout and
sudden deflation that can cause the vehicle to crash.
Your safety and that of your passengers also depends on making
sure that load limits are not exceeded. Vehicle load includes every ­
body and everything in and on the vehicle. These load limits are
technically referred to as the vehicle's
Gross Vehicle Weight Rating
("GVWR").
The "GVWR" includes the weight of the basic vehicle, all factory
installed accessories, a full tank of fuel, oil, coolant and other fluids
plus maximum load. The maximum load includes the number of
passengers that the vehicle is intended to carry ("seating capacity")
with an assumed weight of 150 lbs (68 kg) for each passenger at a
designated seating position and the total weight of any luggage in
the vehicle. If you tow a trailer, the weight of the trailer hitch and the
tongue weight of the loaded trailer must be included as part of the
vehicle load.
The
Gross Axle Weight Rating ("GAWR") is the maximum load that
can be applied at each of the vehicle's two axles.
The Gross Vehicle Weight Rating and the Gross Axle Weight Rating
are listed on the safety compliance sticker label located either on
the driver's side B-pillar or on the inside of the fuel filler flap. Your
Audi has 5 seating positions, 2 in the front and 3 in the rear for total
seating capacity of 5. Each seating position has a safety belt
=>
page 137, "Safety belts".
The fact that there is an upper limit to your vehicle's Gross Vehicle
Weight Rating means that the total weight of whatever is being
carried in the vehicle (including the weight of a trailer hitch and the
tongue weight of the loaded trailer) is limited. The more passengers
in the vehicle or passengers who are heavier than the standard
weights assumed mean that less weight can be carried as luggage.
The tire pressure label on your Audi also lists the maximum
combined weight of all of the occupants and luggage or other cargo that the vehicle can carry.
For the location of the label=>
page 247,
fig. 180.
& WARNING
Overloading a vehicle can cause loss of vehicle control, a crash or
other accident, serious personal 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 suddenly,
including a blowout and sudden deflation, causing loss of control
and a crash.
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehicle's Gross Vehicle Weight Rating. •
Determining correct load limit
Use the example below to calculate the
total weight of the passengers and luggage or other things that you plan to
transport so that you can make sure that
your vehicle will not be overloaded.
~

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
0
©
G)
@
U.S. DOT tire identification number
Audi Original tire
Tire ply composition and materials used Maximum load rating
Treadwear, traction and temperature grades Maximum permissible inflation pressure
The tires and rims are essential parts of the vehicle's design. The
tires and rims approved by Audi are specially matched to the char­ acteristics of the vehicle and can make a major contribution to good
road holding and safe handling when in good condition and prop ­
erly inflated =>& .
We recommend that al l work on tires and wheels be performed by
an authorized Audi dealer . They are familiar with recommended
procedures and have the necessary special tools and spare parts as
we ll as the proper facilities for disposing of the old tires .
Authorized Audi dealers have the necessary information about tech ­
nical requirements for insta lling or changing tires and rims .
Rep lac ing t ires a nd w heels
Tires should be replaced at least in pairs and not individually (for
example both front tires or both rear tires together) .
Be sure to read and heed the tire pressure monitoring system*
information :::>
page 257.
Always buy replacement radial tires t hat have the same specifica ­
tions as the tires approved for your vehicle by Audi . Replacement
tires must always have the same load rating specification as the
original equipment or approved optional tires listed in the table
=>
page 247.
Audi -approved specification tires are specially matched to your
vehic le and its load limits, and can contribute to the important road- holding, driving characteristics, and safety of the vehicle
. The table
( =>
page 247) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure label located either on driver's side 8 -pi llar or
inside the fuel fi ller flap( =>
page 247, fig. 181 l lists the specifica­
tions of the original equipment tires installed on your vehicle at the
time it was manufactured.
Federal law requires tire manufacturers to place standardized infor­
mation on the sidewa ll of all tires=>
page 255, fig. 184. This informa ­
tion identifies and describes the fundamenta l characteristics, the
quality grade of the tire and also provides a tire identification
number for safety standard certification and in case of a recall.
T ire s pec ific ation s
Knowledge of tire specifications makes it easier to choose the
correct tires. Radial tires have the tire specifications marked on the
sidewal l, for example:
P 22 5 / 45 R 17 91H XL
This contains the following information:
P Ind icates the tire is for passenger cars (where applicable)
2 25 Nominal tire width in mm of the tire from sidewall edge to s ide -
wall edge. In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction: Radial
17 Rim diameter code (in inches)
91 Load rating code
H Speed rating letter code
XL (or "xi", "EXTRA LOAD" or "RF ") indicates that the tire is "Rein­
forced" or an "Extra Load" tire
M +S (or "M/S"l Indicates that the tire has some mud and snow capa ­
bility
The tires cou ld also have the information of direction of rotation
=>
page 243 .