brake AUDI S3 2011 Workshop Manual

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Groove
means the spa ce between two ad jacen t tread ribs .
Load rating (code)
mea ns the max imu m load th at a tir e is ra te d to c arry fo r a give n infla­
tion pressure. You may not find this information on all t ires beca use
i t is no t required by law .
Maximum load rat ing
me ans the load r ati ng for a t ire at th e maxi mum p ermis sib le in flation
pressure for that tire.
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weig ht
(c) Vehicle ca pacity we ight, and
(d) Pro duct ion op tions weigh t
Maximum (permissible) inflation pressure
means the m aximu m cold infla tio n pr essur e to whi ch a t ire may be
inflated . Also called "maximum inflat ion press ure."
Normal occupant weight
means 150 lbs. (68 k ilog rams) times t he num ber of occupants seate d
in t he vehi cle up to the total sea ting cap aci ty of yo ur vehicl e.
Occupant distribution
means d is tribut ion of occ upan ts i n a vehicle.
Outer diameter
means the ove rall d iameter of an inflated new tire.
Overall width
means the linear distance betwee n the exter iors of the s idewalls of
a n in flated tire, in cludi ng eleva tions due to la beling, dec ora tions, o r
protective bands or ribs.
Safety first
Ply
means a layer o f rubbe r-coate d para llel co rds.
Production options we ight
me ans the co m bine d we ight of tho se in stalled regu lar pr oduction
options weighi ng over 5 lbs. (2.3 kg) in excess of t hose standard
i t ems w hic h they replace, not previously considere d in c urb we igh t o r
accessory weight, includ ing heavy duty brakes , ride levelers, roof
rack, heavy duty battery, and s pecial tr im.
Radial ply tire
me ans a pneuma tic tir e in wh ich the pl y cords that extend to t he
beads are laid at substantially 90 degrees to the centerline of the
t rea d.
Recommended inflation pressure
see => page 246 , "C old tire in fla tion pr essu re".
Reinforced tire
mea ns a t ire designe d to ope rate at hig her loads an d at higher infla­
tion pressures than the co rresponding standard ti re. Reinforced t ires
my be iden tifi ed as " XL", "xl", "E XTRA LOAD", o r "R F" on the s idew all.
Rim
mea ns a metal suppo rt fo r a tire or a tire and tube assemb ly up on
wh ic h the t ire beads are seated.
Rim diameter
means nom inal d iameter of the bead seat . If you change yo ur whee l
si ze, yo u w ill have to purchase new tires to ma tc h the new r im diam­
eter .
Rim size designation
means r im diamete r and width.
Rim width
mea ns nom inal dis tance be twee n rim flanges.
Vehicle care Technical data

Tires and wheels Ill
----------------
Engine Tire designation Tire pressure front Tire pressure rear
(displace- normal load normal load
ment in
liter ) condition (up full load condition (up full load
to 3 occu- condition to 3 occu- condition
pants) pants)
PSI kPA PSI II kPA PSI II kPA PSI II kPA
4-cylinder 205/55 R1 6 91H All Season 36 250 39 270 30 210 36 250
2 .0 TDI
225 /45 Rl 7 94H XL All Season 38 260 41 280 32 220 38 260 (clean diesel )
225 /45 R1 7 94V XL High Performance
35 240
38 260
30 210
35 240
225
/40 R18 92V XL High Performance 35 240 38 260 30 210 38 260
Compa ct spare wheel T125 /70 R18 60 420 60 420 60 42 0 60 420
XL = reinforced or extra load tire . It may also appear as x i, EXTRA LOAD , or RF on the tire sidewall.
The correct tire pressure for the
spare wheel is located on a label
ei ther on the driver 's s ide B -pillar or inside the fuel fille r flap.
Because technical changes may be made to vehicle equipment dur ing
the model year, a lways compare the tire size des ignation on the tire
pressu re label on you r vehicle w ith the t ires on your veh icle . Make
sure that the tire si ze information on the vehicle labe l is the same as
the s ize of the t ires o n the vehicle . This is especially important if the
vehicle belongs to someone else or you bought the vehicle with
different r ims/ tires or you bo ugh t the vehicle as a previously owned
vehicle. pants and
luggage or other cargo that the vehicle can carry. For the
location o f the tire p ressure label=>
page 249, fig. 17 1.
& WARNING
Overloading a vehicle can cause lo ss of vehicle control , a cra sh or
othe r accident, serious personal injury , and even death .
• Carrying more we ight than your vehicle wa s designed to carry
will p revent the vehicle from handling prope rly and increa se the
risk of a lo ss of vehicle control.
• The brake s on a vehicle that has been o verloaded may not be
able to stop the v ehicle within a saf e distance .
• Tires on a vehicle that has been ove rloaded can fail suddenly
causing loss of control and a crash .
• Always make sure that the tot al load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -doe s not make the vehicle hea vier than the
I
I
Remember, your safety and tha t of your passengers also depends on
maki ng sure that load lim its are not exceeded . Vehicle load includes
everybody and everything in and on the vehicle. These load limits are
technically referred to as the ve hicle's G ross Vehicle Weig ht Rating
("GVWR") . The Gross Axle Weight Rat ing ("GAWR") is the max imum
load th at c an be applied at ea ch of the veh icle 's two ax les. The G ross
Vehicle Weight Rat ing and the Gross Ax le We ight Rating are listed on
t he safety comp liance st ic ke r label lo cated ei ther on the d river 's s ide
B-pillar or on the inside of the fuel filler f lap. The tire p ressure label
on yo ur Audi lists t he maximum com bined weight o f all of the occu -
vehicle 's Gross V ehicle We ight Rating. ~
Safety first Vehicle care Technical data

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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 o n making sure
that load limits are not exceeded. Vehicle load includes everybody
and everything in and on the vehicle. These load limits are techn ically
referred to as the veh icle's
Gross Vehicle Weight Rating ("GVWR").
Th e "GVWR" includes the weight of the basic vehicle, all factory
installed accessories, a full tank of fuel, o il, coolant and other fluids
plus maximum load. The maximum load includes the number of
passenge rs 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 posit ion 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.
T he Gross Axle Weight Rating ("GAWR") is the maximum load that
can be applied at each of the vehicle's two ax les.
The Gross Vehicle We ight Rating and the Gross Axle Weight Rat ing
are listed on the safety compliance sticker label located e ithe r on the
dr iver's s ide B-pillar or on the inside of the fuel filler flap. Your Audi
has 5 seating positions, 2 in the front and 3 in t he rear for total
seating capacity of 5. Each seating position has a safety belt
=> page 135, "Safety belts".
The fact that there is an upper limit to your veh icle's Gross Veh icle
Weight Rating means that the total weight of whatever is being
carried in the veh icle (in cluding 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
we ights assumed mean that less we ight can be carr ied as luggage.
Th e tire pressure label on your A udi also lists the maximum combined
we ight of all of the occupants and luggage or other cargo that the
vehicle can carry. For the location of the labe l=>
page 249, fig. 171.
& 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. ._

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Incorrect wheel alignment
In correct whee l al ignme nt can ca use excessive tir e wea r, impairing
th e sa fety o f the vehicl e. If t ires show excessive w ear, hav e the w heel
alignment checked by a n authorized A udi dea ler or qualifie d work­
shop.
All Wheel Drive
Vehicles wi th quattro® must always have tires of the same size ,
con st ruct ion an d tread type . For details see~
page 194.
& WARNING
Sudden tire failure can lead to los s of control, a cra sh and serious
personal injury!
• Never drive a vehicle when the tread on any tire is worn down
to the wear indicators.
• Worn tires are a safety hazard, they do not grip well on wet
roads and increase your risk of "hydroplaning" and loss of control.
• Always keep chemicals that can cause t ire damage, such as
grease , oil, gasoline and brake fluid away from tires.
• 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 vehicle 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 failu re and loss of vehicle control. •
Vehicle OP-eration
New tires and replacing tires and wheels
New t ires an d w hee ls have to be brok en in .
Fig. 175 Tire specificat ion codes on th e sidewall of a tire
No.
©
®
®
©
©
©
Description
Passenger car tire (where applicable)
Nom inal wid th of ti re in mil limeters
Ratio of hei9ht to width (aspect ratio)
Radial
jj Rim diameter code
L oa d index and speed rating
Vehicle care Do-it-yourselt service iTechnical data

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& WARNING (conti nu ed )
ev en though the damage cannot be seen that can lead to sudden
tire failure and lo ss of vehicl e control.
• All four wheels must be fitted with radial tires of the same
type, size (rolling circumference ) and the same tread patte rn .
Driving with different tires reduces vehicle handling and can lead
to a los s of control.
• If the spare t ire is not the same as the tires that are mounted
on the vehicle -for example with winter tires -only use the spare
tire for a short period of time and drive with e xtra care. Refit the
normal road wheel as soon a s safely possible.
• Never drive faster than the maximum speed for which the ti res
on your vehicle are rated because tires that are driven faster than
their rated speed can fail suddenly .
• Overloading tire s cau se 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 o ver or underinflated.
• For technical reasons it is not always possible to use wheels
from other vehicle s- 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. Reduced airflow to
the brakes can them to overheat , increa sing stopping distance s
and causing a collision.
• Run flat tires may only be used on vehicles that were equipped
with them at the factory. The vehicle must have a chassis designed
for run flat tires and a factory-in stalled tire pres sure monitoring
sy stem* that indicates a loss of tire pressure . Incorrect use of run
flat tires can lead to vehicle damage or accidents. Check with an
authorized Audi dealer or tire speciali st 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 .
0 Note
• For tech nica l reasons, it is no t gene rally poss ible to use the wheel
r ims from other vehicles. This ca n hold t rue for w heels of the same
vehicle type .
• If the spa re tire is different from the tires t hat you have mounte d
on you r vehi cle (fo r exa mple w inte r tir es or wide profi le tires), then
use the spa re t ire for a short perio d of time on ly and d rive with e xtra
c are. Replace t he f lat tire w it h t he ti re m atch ing t he ot hers on yo ur
vehicle as soon as possible.
• If you put diffe rent whee ls and t ires o n your ve hicle (e.g . winter
w heels and tires), yo u must be certain t hat the whee ls and tires are
c omp atib le w ith the tire press ure mon ito ring system* . O th erwise the
system will register a malfunction and a fault message w ill be
displayed. For m ore infor mati on, con ta ct y our au thor ized Aud i
dea ler.
• N ever dr ive witho ut the valve stem c ap. The valves could get
damaged.
For the sake of the environment
Dispose of old t ires in accordance with the loca l requ irements. •
Uniform tire quality grading
• Tread wear
• Tr act io n AA A B C
• T emperat ure A B C
Q uali ty g rades can be fo und where applicab le on the tir e s ide wall
between tread sho ulder and max imum sect ion width ~
page 257,
fig. 175.
For example: Tread wear 200, Tract ion
AA , Temperat ure A.
All passenger ca r tires must confo rm to Federa l Safety Requirements
i n addition to these grades. .,_