wheel AUDI A5 CABRIOLET 2011 Workshop Manual

Cleaning and protection Ill
---------------=---------=----
& WARNING
Be aware: The engine compartment of any motor vehicle is a
potentially hazardous area.
• Before working in the engine compartment, be sure to read the
information =:>
page 272.
• Before reaching into the front plenum panel, always remove
the ignition key. Otherwise, the windshield wiper system could unintentionally be switched on, possibly causing personal injury
from the moving wiper linkage.
• Never reach into the area around or touch the radiator fan. The
auxiliary fan is temperature controlled and can switch on suddenly
- even when the ignition is off.
• Do not wash, wax or dry the engine with the engine running.
Moving or hot parts could injure you.
• Do not clean the underside of the chassis, fenders, wheel
covers, or other hard to reach parts without protecting your hands
and arms. You may cut yourself on sharp-edged metal parts.
• Always read and heed all WARNINGS and other information
=:>
page 260. •
Safety first Vehicle care Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most abused
parts of a motor vehicle.
T ir es may be the least apprec iated and most abused pa rts of a moto r
vehicle. Tires are, however, one of the most important parts of a
veh icle, parti cularly conside ring the comparative ly small patch of
rubber on eac h tire that assu res that all- important co ntact between
you , your ve hicle and the road .
Ma inta in ing t he correct t ire pressu re, making s ure that your veh icle
and i ts tires do not have to carry more weight than they can safely
hand le, avoid ing damage from road ha za rds and reg ula rly inspect ing
tires for damage incl ud ing c uts, s lashes irregular wea r and overall
condi tion are the mos t important th ings that you can do to help avoi d
sudden tire fa ilure includ ing t read separation and blowouts .
Avoiding damage
If you have to drive over a curb or sim ilar obstacle, drive very s lowly
and as close as poss ible at a right angle to the cu rb .
Always keep chemicals including grease, oil , gasoline and bra ke fl uid
o ff the t ires .
Inspect the ti res regularly for damage (cuts, crac ks o r bl ist ers, e tc .).
Remove any foreign bodies embed ded in the trea ds.
Storing tires
M ar k tires when yo u remove t hem to indica te the d irect ion of rota ­
tion . This ens ures yo u to be able to mo unt them co rrectly whe n you
re insta ll them.
Wh en r emoved, t he wheels or tires s hould be sto red in a c ool, dry and
preferably da rk p lace. Sto
re tires in a ver tica l pos it ion if they a re not mounted on rims, in a
hor izonta l position if they are mo unted on r ims.
New tires
N ew tires have to be bro ken in~ & .
Th e tread dep th of new tires may v ary, ac cor ding to t he type an d
make of t ire and the tread pattern.
Hidden damage
Dama ge to t ires and rims is often not readi ly visible . If yo u notice
unusu al v ib ra tion o r the veh icle pulls to one sid e, t his may i ndicate
that one of the tires has been damaged. The tires must be c hecke d
i m medi ately by an a uthor ized A udi deale r or quali fied w or ksh op .
Unidirectional tires
A u nidirectional tire can be identified by arrows on the sidewall, that
point in the d irect io n the tire is des igned to rotate. Yo u m ust follow
t he s peci fied dire ction of ro tation . T his is nece ssary so th at t hese
tires can develop the ir optimum c haracter istics regarding gr ip, road
noise, we ar and hy dropl aning res istance. For more informa tion
~page 326 .
& WARNING
New tires or tires that are old , worn or damaged cannot provide
maximum control and braking ability.
• New tires tend to be slippery and must also be broken-in. To
reduce the risk of losing control, a collision and serious personal
injuries , drive with special care for the first 350 miles (560 km).
• Driving with worn or damaged tires can lead to loss of control,
sudden tire failure , including a blowout and sudden deflation ,
crashes and serious personal injuries. Have worn or damaged tires
replaced immediately. .,_

________________________________________________ T_i_re _ s_ a _ n_d_ w_ h_ e_ e_l_s __ l!'II
& WARNING (co ntinued )
• Tires age even if they are not be ing used and can fail suddenly ,
e specially at high speeds . Tires that are more than 6 year s old can
only be used in an emergency and then with special care and at low
s peed .
Glossary of tire and loading terminology
Accessory weight
means the combined weigh t (in excess of those sta ndard items wh ich
may be replaced) of automatic transmission, power steer ing, power
bra kes, powe r win dows, power sea ts, radio, and heate r, to the exte nt
that these items are available as factory-insta lled equipment
(whet her i ns ta lled or no t).
Aspect ratio
means the r atio of t he he ight to t he widt h of the t ire in percent.
N umbers of 55 or lower indicate a low sidewa ll for improved steer ing
res ponse and bet ter over all h andling on dry p avemen t.
Bead
means the part of the t ire that is made of stee l wi res, w rapped or
re in forced by ply cords and that is shaped to fit the rim.
Bead separation
means a brea kdown of the bond between components in the bead.
Cord
means the st rands forming the plies in the ti re.
Safety first
& W ARNING (co ntinued )
• Never mount u sed tires on your vehicle if you are not sure of
their "previous history ." Old u sed tires may have been damaged
eventhoughthedamagecannotbeseenthatcanleadtosudden
tire failure and loss of vehicle control.
• If you notice unusual vibr ation 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
means the t ire pressu re recom mended by the vehicle manufa ctu rer
for a tire of a desig nate d size that has not been driven for more than
a couple of m iles ( kilomete rs) a t low speeds in the t hree hour per io d
before the tire pressu re is measured or adjusted.
Curb weight
means the weight of a moto r vehicle wit h standard equipment
incl uding the max imum ca pac it y of fue l, o il, and coo lan t, air condi ­
tioning and additiona l weig ht of optional eq uipment.
Extra load tire
means a tire design to operate at higher loads and at higher inflat ion
pressures than t he co rresponding sta ndard t ire. Extra load tires may
be identif ied as "XL", "xl", "EXTRA LOAD", or "RF" on the sidewa ll.
Gross Axle Weight Rating ( "GAWR ")
means the loa d-carrying capac ity of a sing le ax le system, measure d at
the t ire-grou nd interfaces.
Gross Vehicle Weight Rating ("GVWR")
mea ns the maximum tota l loaded we ig ht of the vehicle .
Vehicle care Technical data

-~_T_ ir_e_ s_ a_ n_ d_ w_ h_e_ e_ ls _______________________________________________ _
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 infla­
tion pressure. You may not find this information on all tires because
it is not required by law.
Maximum load rating
means the load rating fo r a tir e at the maximum permissible inflation
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
inflated. 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 distr ibution 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 paralle l cords.
Production options weight
means the combined weight of those installed regular production
options weigh ing 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 specia l 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 297, "Cold tire inflation pressure".
Reinforced tire
means a tire design to operate at higher loads and at higher inflation
pressures than the corresponding standard tire. Reinforced t ires may
be identified as "XL ", "x l", "EXTRA LOAD", or "RF" on the sidewall.
Rim
means a metal support for a tire or a tire and tube assembly upon
wh ich the tire beads are seated .
Rim diameter
means nominal diameter of the bead seat . If you change your wheel
size, you w ill 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.

__________________________________________________ T_i_ r _e _s_ a_ n_ d_ w_ h_e_ e _ l_s __ _
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 o ccupant s), you can adjust tire pres sures to
those specified for normal vehicle load . Before operating the
vehicle at maximum lo ad, you must increase the tire p res sures to
those specified for maximum vehicle load=>& .
Bear in mind that the tire press ure monitor ing system* can only
mon itor the t ire pressu re s you h ave sto red . T he sys tem does no t
recogn ize the load cond it ion of your vehicle.
Th e effectiveness of the ti re pressure monitoring system* wi ll be
impa ired if you store normal load pressu res but then operate the
vehicle at its maxim um loa d=> & . See the
illustration=> fig. 227 for the location of the label on driver's
side B- pillar (colo r of the act ual la bel and ex act l ocation on the
vehicle will vary slig htly).
N ote that the fo llow ing tab le is accurate at the time of going to press
and is subjec t to change. I n the even t of discrepancies , the tire pres­
sure label is located on the driver 's side B-pillar always takes prece­
dence .
T he table below lists the recommended cold t ire inflation pressures
for the Audi model covered by your Owne r's Literature at t he ve hicle's
capac ity weight and the tire sizes insta lled on the respective models
as original equipment, or as a factory option .
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 2 occu- condition to 2 occu- condition pants) pants)
kPA PSI PSI kPA PSI kPA
4-cylinder 225/50 Rl 7 94H All Season
33 230
36 250
30 2
10 39 270
2.0 245/45
Rl 7 95H All Season 32 220 35 240
29 200 38 260
245/45
Rl 7 99H XL All Season 32 22 0 35 240 2 9 200 3 8 260
245 /40 R18 93H All Sea son 35 240 38 260 32 220 41 280
255/35 R19 96V
XL High Performance 32 220 35 240
29 200 38 260
XL= reinforced or extra load tire . It may also appear as xl , EXTRA LOAD, or RF on the tire sidewall .
The correct tire p ress ure for t he spare wheel is loca ted on a labe l o n
the driver 's s ide B-pillar.
Beca use technical c hanges may be made to vehicle equipment dur ing
the model year, always compare the tire size des ignation on the t ire
pressu re labe l on yo ur vehicle with the t ires on your vehicle. Make
sure that the tire size informat ion on t he v ehicle labe l is the same as
the size of the t ires o n the vehicle. This is especially important if the
vehicle belo ngs to so meone else or you bo ug ht the vehicle with
Safety first
differe nt r im s/ tires or you bo ugh t the vehicle as a prev iously owned
vehicle.
Remember, yo ur safety and t hat of your passengers also depends o n
making sure that load limits are not exceeded. Vehicle load includes
everybody and everything in an d on the vehi cle. These load limits are
t e chnically refer red to as the veh icle's G ross Veh icle Weig ht Rating
("GVW R"). The Gross Axle Weight Rati ng ("GAWR") is the maximum
load tha t can be applied at ea ch of the ve hicle's two ax les . T he G ross ..
Vehicle care Technical data

________________________________________________ T_i_r _e _s _ a_n _ d_ w_ h_ e _ e_l_s __ _
gauge a nd keep chec king the press ure until you reach t he press ure
th at i s cor rect fo r t he lo ad ( pass en ge rs and l uggage) and kind of
dr iving you plan to do .
If the press ure i n any t ire is too low, note the difference betwee n th e
pressu re in t he cold tire a nd the pressure you need and add the air
that you need to reach the correct pressure for t he ve hicle load
( pass enge rs and lugg age) f or th e tires on yo ur vehicle as l ist ed on t he
on your vehicle and in this manua l and the kind of driving you p lan to
do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason.
Remember that the ve hicle m anufac tur er, no t the tire manufa cture r,
determines t he correct tire press ure for the t ires on your veh icle.
It is important to check the tire pressure when the t ires a re co ld .
• Read the requ ired t ire pr essure from t he t ire pr essure lab el. T he
tire pressure labe l is located on the dr ive r's side B-p illar.
• Turn t he valve stem cap co unter-clockw is e t o remove it from the
tire valve.
• Place th e air press ure gauge on the valve .
• Th e tire p res su res sho uld on ly be che cked and adju sted whe n the
tires are cold . The slightly raised press ures of warm tires must not be
re duc ed .
• Adjust the tire press ure to the load you are carry ing.
• Re install the valve s tem cap o n the valve.
When should I check the tire pressure?
Th e correct tir e press ure is especially import ant a t hi gh s peeds. The
pressu re s ho ul d t herefore be chec ke d at least once a mont h and
a lways before sta rt ing a jou rney. Do not fo rget to check the tire pres­
sure for the spare w heel.
When should I adjust the tire pressures?
Adjust t he tire pressure to the loa d you are ca rry ing . After ch ang ing a
w hee l
or replac ing wheels yo u have to adjus t th e t ire press ures on all
Safety first
wheels . In add itio n, you m ust t hen store the new tire pressu res in the
tir e press ure m oni torin g sy stem* =>
page 316.
& 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 appears in the instrument
cluster, stop and inspect the tires .
• Incorrect tire pressure and/or underinflation can cause
increa sed 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 sticker on the driver's side B·pillar.
• Only when all tires on the vehicle are filled to the correct pres­
sure , the ti re 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.
Vehicle care Technical data

-~_T_ i_ re _ s_ a_n _ d_ w_ h _e_ e_ ls _________________________________________________ _
& WARNING (conti nu ed )
• If the tire i s not flat and you do not ha ve 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
Driv ing without valve stem caps can cause damage to the tire valves.
T o preven t this, a lways make sure that fac tory ins talle d valve stem
caps on all wheels are securely mo unted on the valve.
<£> For the sake of the environment
Under inflated t ires will also increase the fuel consumption .•
Tires and vehicle load limits
There are limits to the amo unt of load or weig ht that any vehicle and
any t ire ca n carry. A veh icle th at is overlo ade d w ill n ot handle well and
is more difficult to stop . Overload ing can not on ly lead to loss of
vehicle co ntro l, bu t can also d amage important pa rts of the vehi cle
and can lead to sudden t ire failure, including a b lowo ut and sudden
deflation that can ca use the vehicle to c rash.
Yo ur safety and t hat of your passengers also depends o n mak ing s ure
that load limits are not e xceeded. Vehicle load incl udes eve rybody
and everyth ing in and on the ve hicle. These load limits are tech nically
refer red to as the veh icle's
Gross Vehicle We ight Rating ("GVWR").
T he "GVWR" includes t he weight of the basic vehi cle, all factory
installed accessories, a fu ll tank of fue l, o il, coo la nt and other fluids
plus maxim um load . The maxim um load includes the number of
passenge rs that the vehi cle is intended to car ry ("seating capacity ")
w ith an ass umed we ight of 150 lbs (68 kg) for each pa ssenger at a
designat ed seating position and the tota l w eight of any l uggage in
the vehicle. If you tow a trai le r, the weight o f the t railer hitch and the tongue weight of the
loaded tra ile r must be included as part of the
veh icle lo ad .
T he
Gross Axle Weight Rating ("GAWR ") is the max imum load t hat
can be a pplied at each of the ve hicle's two axles .
Th e Gross Vehicle Weight Rat ing and the Gro ss Axle Weight Ra ting
are listed on the safety compliance s ticker label located on the
dr iver 's s ide B-pillar. Audi h as 4 seat ing pos it ions, 2 in t he fro nt and
2 in the rear for total seating capacity of 4 . Each seating pos it io n has
a seat belt =>
page 189, "Safety belts" .
Th e fa ct t hat there is an upper lim it to your veh icle 's Gross Vehicle
We ight Rating means that the total weight of whatever is being
c arrie d in t he ve hicle (incl uding t he weight o f a trail er hi tch and the
tongue weig ht of the loaded tra iler) is limited . The more passengers
in the veh icle or p assenge rs who are he avier than the st anda rd
we ights assumed mean that less we ight can be carried as luggage.
Th e tire pressure labe l o n yo ur Audi a lso lists the max imum combine d
we ight of alt of the o ccupants and l uggage or o ther cargo that the
vehicle ca n carry . For t he locat ion of the label=>
page 300, fig. 22 7.
& 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 de signed 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 di stan ce.
• Tires on a vehicle that has been o verloaded 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 -
i ncluding the weight of a trailer hitch and the tongue weight of a .,_

& WARNING (continued)
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.
Steps for Determining Correct
Load Limit
1.Locate the statement "THE COMBINED WEIGHT OF OCCUPANTS AND CARGO SHOULD NEVER EXCEED XXX KG OR XXX LBS"on your vehicle's placard (tire infla­
tion pressure label) =>
page 300,
fig. 227.
2. Determine the combined weight of the driver and passengers that will be riding
in your vehicle.
Safety first
Tires and wheels -
3. Subtract the combined weight of the
driver and passengers from
"XXX" kilo­
grams or "XXX" pounds shown on the
sticker =>
page 300, fig. 22 7.
4. The resulting figure equals the available amount of cargo and luggage load
capacity. For example, if the
"XXX"
amount equals 1400 lbs. and there will
be five 150 lbs. passengers in your
vehicle, the amount of available cargo and luggage load capacity is 650 lbs. (1400- 7
SO (5 x 1 SO) = 650 lbs.)
5. Determine the combined weight of luggage and cargo being loaded on the
vehicle. That weight may not safely exceed the available cargo and luggage
load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be transferred
to your vehicle. Consult this manual to determine how this reduces the available
cargo and luggage load capacity of your
vehicle. .,_
Vehicle care Technical data

___ T_ i_ r _e _s_ a_n_ d_ w_ h_ e_e_ l_ s _______________________________________________ _
Check the tire sidewall( => page 307~
fig. 231) to determine the designated
load rating for a specific ti re. •
Tire service Life
The service life of tires depends on a lot of differ ent
things including proper installation and balancing,
corr ect tire pressure and driving style .
(,,-------
Tread Wear Indicator (TWI)
Fig . 22 9 T ir e t re ad:
t read wea r indi cators
(TW I)
Fig. 2 30 Rota tin g
tire s fo r mo re ev en
w ear
T he original t ires o n your veh icle have 1/ 1 6 inch ( 1.6 mm) h igh "wea r
indicators" => fig . 229 r unning across the tread . Depending on the make, there will be six to eight of them eve
nly placed around the t ire .
Ma rks o n the t ire sidewall (for examp le " TWI" or o ther symbols) indi­
cate the positions of the tread wear indicators . Worn t ires must be
replaced . Different figures may apply in other countries =>& .
Tire pressure
Incorrec t tire pressure causes premature wea r a nd c an cause sudde n
tire blow -o ut. Fo r th is reason, tire press ure must be checked at least
once a mont h =>
page 302.
Driv ing style
Dr iv ing fast aro und curves, he avy ac cele ration and hard braking
increase tire wear.
Rotating tires for more even wear
For all four t ires on your veh icle to have the same se rvice life, we
recommend that the fron t and rear ti re s are rotated according to the
tire ma nufactu rer's suggested tire rotat ion intervals. Please
remember the fo llow ing :
• Tire ro tat ion intervals may d iffe r from the vehicle serv ice intervals
out lined in your Maintenance and War ranty Booklet .
• The longer one tire is used in one locat ion on the vehicle, the more
it wears a t certain points; therefore, we recommend that you follow
the tire manufacture r's suggested tire rotation interva ls .
• Vehicles with front -whee l drive experien ce more tread wear on the
front wheels compa red to all-whee l dr ive (quattro
® ).
• Please ro ta te tires as shown=> fig . 2 30.
• Extra care must be taken when rotating direction-specific tires
=>page 326 .
Wheel balancing
The wheels on new vehicles are balanced . Howeve r, various sit uat io ns
dur ing everyday driving can cause them to become unbalanced,
res ulting in vibr ations yo u can us ua lly fee l throug h the s tee rin g
whee l. •

________________________________________________ T_ i_ re _ s_ a_ n_d_ w_ h_ e_ e_l _s _ ....... JIII
Unbalanced wh eels must be rebalanced to avoid e xcessive w ear o n
st eeri ng, sus pens ion and tires. A w heel must a lso be re balan ced
w hen a new tire is installed.
Incorrect wheel alignment
Incorrect whee l alignm ent can ca use excessive ti re wea r, impairing
th e safe ty o f the vehicle. If tir es show excessive we ar, ha ve the w heel
alignment checked by a n authorized A udi dealer or qualif ied wo rk ­
s hop .
All wheel drive
Vehicle s wi th qu att ro ® mus t alw ay s ha ve tires of the sa m e siz e,
construct ion a nd tread type. For details see~
page 246.
& WARNING
Sudden tire failure can lead to loss of control , a crash 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 tire 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 failure and loss of vehicle control. •
Vehicle OP-eration
New tires and replacing tires and wheels
New tires and w heel s hav e to b e brok en in .
Fig. 231 Tire specificat ion codes on the sidewall of a tire
No.
©
®
®
©
©
©
Description
Passenger car tire (where app licable)
Nom inal width of ti re in mil lim eters
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