change time AUDI A8 2011 User Guide
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Page 192 of 302

190 Intelligent technology
Intelligent technology Notice about data
recorded by vehicle
control modules
Your veh icle is not equipped with an Event DaÂ
ta Recorder (EDR), installed by some manuÂ
facture rs for the express purpose of capturing
data for retrieval after an accident or crash
event . EDR's are sometimes ca lled "crash reÂ
corders".
Some state laws restrict the retr ieval or downÂ
loading of data stored by EDR's that were inÂ
stalled in a vehicle for the express purpose of
retrieving data after an accident or crash
event without the owner's consent.
A lthough your vehicle is not equipped with an
EDR, it is equipped with a number of electronÂ
ic control modules for various vehicle systems
such as, for example, eng ine function, em isÂ
sion control, as well as for the airbags and
safety belts.
These electronic contro l modules also record
vehicle-re lated data during normal vehicle opÂ
eration for diagnostic and repair purposes.
The recording capacity of the electronic conÂ
trol modules is limited to data (no sound is reÂ
corded) and only a small amount of data is acÂ
tually recorded over a ve ry limited pe riod of
time and stored when a system fault or other
cond ition is sensed by a control unit. Some of
the data then stored may re late to vehicle
speed, direction, braking as we ll as restraint
system use and performance in the event of a
crash or other condition. Stored data can only
be read and downloaded with special equipÂ
ment.
Electronic stabilization
program (ESP)
Description
ESP helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidd ing and loss of veh icle control. It works
only when the engine is running. ESP detects certain difficult driving situat
ions, including
when the vehicle is beginning to spin (yaw) out of control and helps you to get the veh icle
back under control by se lectively braking the
wheels, and/or reducing engine power and
providing steer ing assistance to help hold the
vehicle on the driver's intended course. The inÂ
dicator light
liJ in the instrument cluster
blinks when ESP is taking action to help you
control the vehicle.
ESP has limitations.
It is important to rememÂ
ber that ESP cannot overcome the laws of
physics. It will not always be able to help out
under all conditions you may come up against.
For example, ESP may not always be able to
help you master situations where there is a
sudden change in the coefficient of friction of
the road surface. When there is a section of dry road that is suddenly covered w ith water,
slush or snow, ESP cannot perform the same
way it wou ld on the dry surface . If the vehicle
hydroplanes (rides on a cushion of water inÂ
stead of the road surface), ESP will not be
able to help you steer the vehicle because conÂ
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered.
During fast cornering, particularly on winding
roads, ESP cannot always deal as effectively
with difficult driving situations than at lower
speeds. When towing a trailer, ESP is not able
to help you regain control as it would if you
were not tow ing a trailer.
Always adjust your speed and driving style to road, traffic; and weather condit ions. ESP canÂ
not override the vehicle's physical limits, inÂ
crease the available traction, or keep a ve hicle
on the road if road departure is a result of
driver inattention. Instead, ESP improves the
poss ibility of keeping the vehicle unde r conÂ
trol and on the road during extreme maneuÂ
vers by using the driver's steering inputs to
help keep the vehicle going in the intended diÂ
rection . If you are traveling at a speed that
causes you to run off the road before ESP can
provide any assistance, you may not experiÂ
ence the benefits of ESP .
Page 221 of 302

-Blend must contain not more than 15%
MTBE.
Seasonally adjusted gasoline
Many gasoline grades are blended to perform
espec ially we ll for winter or summer driving.
During seasonal change-over, we suggest that
you fill up at busy gas stat ions where the seaÂ
sonal adjustment is more likely to be made in
time .
(D Note
-Methanol fuels which do not meet these
requirements may cause corrosion and
damage to plastic and rubber compoÂ
nents in the fuel system .
- Do not use fue ls that fail to meet the
specified criter ia in this chapter.
- If you are unable to determine whether
or not a particular fue l blend meets the
specifications, ask your service station or
its fuel supp lier.
- Do not use fuel for which the contents
cannot be identified.
- Fuel system damage and performance
problems resulting from the use of fuels
different from those specified are not
the responsibility of Audi and are not
covered under the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fuel economy
or driveability and performance prob l ems due to the use of one of these fuel
blends, we recommend that you switch
to unblended fuel.
Gasoline additives
A major concern among many auto manufac Â
turers is carbon deposit build- up caused by
the type of gasoline you use.
Although gasoline grades differ from one manufacturer to another , they have certain
things in common. All gasoline grades contain
substances that can cause deposits to collect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline brands include additives to keep engine and
Fuel supply and filling your fuel tank 219
fuel systems clean, they are not equally effec Â
tive .
A udi recommends using TOP TIER Detergent
Gasoline. For more info rmation on TOP TIER
Detergent Gasoline, please go to the official
website (www.toptiergas.com).
After an extended period of using inadeq uate
fuels, carbon deposit build-ups can rob your
engine of peak performance.
Q) Note
Damage or malfunction due to poor fue l
quality is not covered by the Aud i New VeÂ
hicle Limited Warranty.
Fuel tank
Fuel filler neck
The fuel filler neck is located on the right rear
side panel behind the fuel fille r flap.
If the power locking system should fail, you
can still open the flap manually -for deta iled
instruct ions see
¢ page 221 .
You can find the fuel tank capacity of your veÂ
hicle in
Technical Data ¢ page 282.
The label on the inside of the fuel fi ller flap
tells you the correct fue l for your vehicle. For
more information about fuel specifications,
see
¢ page 218.
Your vehicle fue l tank has an on board refuelÂ
li ng vapor recovery system. This feature helps
to prevent fuel vapors from escaping from the
tank and polluting the environment while you refuel your vehicle . In order to fill the tank
properly while protecting the environment,
please fo llow this refueling procedure carefulÂ
ly.
_&. WARNING
Under normal operating conditions, never
carry additional fuel containers in your car.
Gas canisters and other containers used to
transport f uel can be dangero us. Such conÂ
tainers, full or empty, may leak and could
cause a fire in a collis ion. If you must
•
•
Page 227 of 302

Modern eng ine lubrication has taken a quan Â
tum leap in the last few years . Many synt hetic
oils ava ilable today provide better engine luÂ
brication that can outlast traditional petroleÂ
um-based o ils, making them a smart choice
for use throughout the life of your Audi .
Whether you use synthetic or petroleum based engine oil, the oil that you use must
conform to Audi's oil quality standard
VW 502 00 to help keep your veh icle's engine
running smoothly and help prevent the forÂ
mat ion of harmfu l deposits, sometimes called
"s ludge," that ove r time can lead to expensive
r epairs .
At the t ime of pri nting, engine o ils available in
the U .S . and Canada that meet the exacting
specifications of Audi oi l standard VW 502 00
are synthetic engine oils. This does no t mean,
however, that every syn thetic engine oi l w ill
meet Audi oil standard VW 502 00. So a lways
be sure that you use an approved oi l.
To help preve nt the format ion of harmful deÂ
posits use only oi l with the fo llow ing spec ifiÂ
cations printed on the oil container:
Audi oil standard VW 502 00
O il conta iner labels may carry the specif icaÂ
tion s ingly o r in comb inat ion w ith other des igÂ
nations and oil qua lity standards .
Viscosity
Engine oi ls are graded according to their visÂ
cosity. The proper v iscosity grade oi l for your
engine depends on cl imactic or seasonal conÂ
d itions where you dr ive. You can use oil with a
viscosity grade of SAE SW40 across all tem Â
pe rature ranges for normal d riving conditions .
However, if eng ine oi l viscosity grade SAE
SW40 is not avai lab le, you can also use viscosÂ
ity grade SAE SW -30 or SAE OW-40 as long as
it meets Audi o il quality standard VW 502 00
specifications.
Because engine oil that meets the A udi oil
standard may not be available everywhere
when you need it, we s trongly recomme nd
that you always carry with you a n ext ra quart
Checkin g and fillin g 225
(li ter) of oil that exp ress ly con forms to the
VW S02 00 specification , in case you have to
top
off the o il while on the road.
Only if the level of the o il is at or be low the
minimum mark on the o il dipstick -and no oi l
that expressly conforms to Audi oi l standard
VW S02 00 specifications is availab le - may
you top
off with a high quality engine o il, prefÂ
erably synthet ic-based, that meets ACEA A3,
ACEA AS or ACEA BS or API SL spec ificat ions,
but eve n then, only in v iscosity g rades SA E
SW- 40, SA E 5W-30, or SAE OW-40 . Howeve r,
dur ing the entire time between o il change inÂ
te rv al s, never top
off wi th more than a to ta l
of 0. 5 qt/liter eng ine oil that does not con Â
form to Audi oil specification VW 502 00 .
Fo r more informa tion abo ut eng ine oi l tha t
h as been approved for your veh icle, please
contac t either yo ur autho rized Aud i dea le r or
Audi C ustome r Re lations at 1 (800) 822 -2834
or visit o ur web site at www .a udiusa.com or
www.aud icanada .ca. Here you w ill also find a
current list of oils (manufacturers, brand
names etc.) that conform to Audi oil standard
vw 502 00.
Changing the engine oil
T he eng ine oi l and oil f ilter m ust be changed
according to the mileage (ki lome ters) and
time intervals specified i n your vehicle's War Â
ranty
& Maintenance booklet. Do not exceed
these interva ls - harmful deposits from old
engine oil can reduce engine performance and
can lead to expensive engine repairs.
Changi ng the oil at the recommended interÂ
vals is so very important beca use the l ubricatÂ
ing propert ies of oil decrease gradually during
norma l veh icle use . If you a re not sure when
yo u have your o il cha nged, ask your authorÂ
ized Audi Se rv ice Adv isor.
Under some circumstances the engine oil
shou ld eve n be changed more frequent ly.
Change oil mo re often if you dr ive most ly
sho rt distances, operat e the ve hicle in dusty
areas o r most ly under stop-and -go traff ic con-
d iti ons, o r when you use your vehi cle where .,..
•
•
Page 228 of 302

226 Check ing and filling
temperatures stay below freezing point for
long periods.
Detergent add it ives in the o il w il l make fresh
oil look dark after the eng ine has been runÂ
ning for a short time . This is norma l and is not
a reason to change the oi l more often than
recommended.
Dam age or ma lf u ncti ons du e to lack of
m ainten ance
It
is essential that you change your oil at the
recommended in tervals using only engine o il
that complies with Audi oi l standard
VW 502 00. You r Limited New Vehicle WarÂ
ranty does not cover damage or malfunctions
due to fail ure to fo llow recommended mainteÂ
nance and use requ irements as set forth in
the Audi Owner's Manual and Warranty&
Maintenance book let . Your dealer will have to
deny warranty coverage unless you present to
the dea ler proof in the form of Service or ReÂ
pa ir Orders that all scheduled maintenance
was performed in a t imely manner.
Eng ine oil consumption
The engine in your vehicle depends on an adeÂ
quate amount of oil to lubricate and cool all
of its moving parts.
In order to provide effective lubrication and
cool ing of internal engine components, a ll inÂ
ternal comb ustion eng ines consume a certa in
amount of oil. O il consumption varies from
engine to engine and may change significantly
over the life of the engine. Typica lly, engines
with a specif ied break-in period (see
¢
page 197) consume more oil during the
break-in period than they consume after oil
consumption has stabilized.
Under norma l conditions, the rate of oil conÂ
sumpt ion depends on the quality and viscosity
of the oil, the RPM (revolutions per m inute) at
which the engine is operated, the ambient
temperature and road condit ions . Further facÂ
tors are the amount of oil d ilution from water
condensat ion or fuel residue and the ox idaÂ
tion level of the oi l. As any engine is subject to wear as mi
leage builds up, the oil consumpÂ
tion may increase over time until replacement
of worn components may become necessary.
With a ll these variab les coming into play, no
standard rate of oil consumption can be esÂ
tablished or specified. There is no alternative
to regu lar and frequent check ing of the o il lev Â
el, see
Note .
If
the yellow engine oil leve l warning symbo l
in the instrument cluster
m lights up, yo u
shou ld check the oil leve l as soon as possib le
¢
page 22 7. Top off the oil at your earliest
convenience ¢
page 22 7.
A WARNING '"---
Before you check anything in the engine
compartment, always read and heed all
WARNINGS¢
A in Working in the engine
comportment on page 222.
(D Note
Driving w ith an insufficient o il level is likeÂ
ly to cause severe damage to the engine .
(D Tips
-The oil pressu re warn ing display. is
not an indicator of the oil le vel. Do not
r el y on it . In ste ad, ch eck the oil lev el in
y our engin e at regular inter vals , pref Â
erably ea ch time you r efu el, and alway s
before going on a long trip .
-If you have t he impression yo ur engine
cons umes ex cessive amoun ts of o il, we
recommend that you consu lt your Aud i
dea ler to have the cause of your concern
properly diagnosed. Keep in mind that
the accurate meas urement of oi l conÂ
sumption requ ires great care and may
take some t ime. Your Audi dea ler has inÂ
structions about how to measure oil conÂ
sumption accurately.
-
Page 230 of 302

228 Check ing and filling
and ad versely a ffect yo ur New Vehicl e
W arrant y.
@) For the sake of the environment
- Under no circums tances can the oil come
in contact with the sewage network o r
the soil.
- Observe and follow lega l regu lations
when disposing of empty oil containers .
Changing the engine oil
We recommend that have your oil changed by
an authorized Audi dealer or a qualified servÂ
ice station.
Before you check anything in the engine comÂ
partment,
a lw ays rea d an d h eed all WARNÂ
INGS c::> .& in Working in the engine compartÂ
ment on page 222.
The engine oil must be changed accord ing to
the intervals specified in your Warranty
&
Maintenance book let. This is very important
because the lubricating properties of oil diÂ
minish gradua lly during normal vehicle use .
Under some ci rcumstances the engine oi l
should be changed more frequently. Change
oil more often if you drive most ly short disÂ
tances, operate the vehicle in dusty areas or under predominantly stop-and-go traffic conÂ
ditions, or have your vehicle where temperaÂ
tures remain below freezing for extended pe Â
riods .
Detergent addit ives in the oil w ill make fresh
oil look dark after the eng ine has been runÂ
n ing for a short time. This is normal and is not
a reason to change the oil more often than recommended.
Because of the problem of proper disposal,
along w ith the special tools and necessary ex Â
pertise required , we strongly recommend that
you have your o il changed by an authori zed
A udi de ale r or a q ual ified servi ce station.
If you choo se to c hang e y our oi l your self,
please note the followi ng important informaÂ
tion :
A WARNING
To reduce the risk of personal injury if you
must change the eng ine oil in your vehicle
yourself:
- Wear eye protect ion.
- To reduce the risk of burns from hot en- gine oil, let the engine cool down to the
touch.
- When removing the o il dra in plug with
your fingers, stay as far away as possible.
Always keep your forearm parallel to the
ground to help p revent hot oil from runÂ
n ing down you r arm.
- Dra in the oil into a container designed
for this purpose, one large enough to
hold at least the total amount of oil in
your engine.
- Engine oil is poisonous. Keep it we ll out
of the rea ch of childre n.
- Continuous contact with used eng ine o il
is harmful to your sk in. Always protect
your skin by washing oil off tho roughly
with soap and wate r.
@ Note
Never mix oil additives with your engine
oi l. These additives can damage your enÂ
g ine and adversely affect you r A ud i LimitÂ
ed New Veh icle War ranty.
@ For the sake of the environment
- Before changing your oil, first make su re
you know where you can prope rly dispose
o f the used oil.
- Always dispose of used eng ine oi l properÂ
ly. Do not dump it on garden soil, woodÂ
ed areas, into open streams or down
sewage drains.
- Recycle used engi ne oil by taking it to a
used engine oil collection facility in you r
area, or contact a service station.
Page 234 of 302

232 Checking and filling
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance .
Fig. 181 Engine compartme nt: markings on the brake
flu id reservoir
Before you check anything in the engine comÂ
partment,
always read and heed all WARNÂ
INGS ¢ .&._ in Working in the engine compartÂ
ment on page 222.
.. Read the brake fluid level from the brake
fluid reservoir ¢
fig. 181. The brake fluid
level must be between the "MIN" and
" MAX " markings .
The location of the brake fluid reservoir can be
seen in the engine compartment illustration
c:::,page224 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . T hi s is not cause for alarm.
If the brake fluid level falls
considerably beÂ
low the "MIN" mark, the brake warning/indiÂ
cator light. (U.S. models)/ . (Canadian
models) will come on ¢
page 14. Do not conÂ
tinue to operate the vehicle . The complete
brake system should be thoroughly checked
by an authorized Audi dealer or other qualiÂ
fied facility and the cause corrected.
If the
brake fluid level is too low, the brake warning/
indicator light will illuminate. Contact an auÂ
thorized Audi dealer
immediately .
Changing brake fluid
Have the brake fluid changed by an experiÂ
enced technician .
Brake fluid absorbs moisture from the air. If
t he water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake fluid will also decrease considerably and
decrease braking performance.
Therefore, the brake fluid must be changed
every two years . Always use new brake fluid
which conforms to Federal Motor Vehicle
Standard "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficult to reach, therefore, we recommend that you
have the brake fluid changed by your authorÂ
ized
Audi dealer. Your dealer has the correct
tools, the right brake fluid and the know-how
to do this for you .
A WARNING
-Brake fluid is poisonous. It must be storÂ
ed only in the closed original container
out of the reach of children!
- Brake failure can result from old or inapÂ
propriate brake fluid. Observe these preÂ
cautions:
- Use only brake fluid that meets SAE
specification
J 1703 and conforms to
Federal Motor Vehicle Standard 116.
Always check with your authorized Audi
dealer to make sure you are using the
correct brake fluid. The correct type of brake fluid is also indicated on the
brake fluid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
long . This can seriously affect the effiÂ
ciency of the brakes as well as your
safety. This could result in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle.
Page 235 of 302

@ For the sake of the environment
Because of the problem of proper disposa l
of brake fl uid as we ll as the special tools
requ ired and the necessary expert ise, we
recommend that you have t he brake fluid
changed by your author ized Audi dealer .
Battery
General information
Under normal operating conditions, the batÂ
tery in your Audi does not need any mainte Â
nance. With
high outside temperatures or
long daily dr ive s we recommend that you have
the electro lyte level checked by a service faÂ
cility . The electrolyte level shou ld a lso be
checked each time the battery is charged
¢ page 235.
Have the battery checked when you take your
ve hicle in for service . Yo u are well adv ised to
replace a battery that is older than 5 yea rs .
W ith certa in types of a irbag deployment, t he
b attery is d isconnected from the vehicle elecÂ
tr ica l system for safety reasons¢.&.
in Re Â
pair, care and disposal of the airbags on
page 159.
Disconnecting the battery terminals
Some vehicle functions (power w indow reguÂ
lators , for example) are lost if the battery terÂ
m inals a re d isconnected. These func tions have
to be re lea rned after the batte ry term inals a re
connected agai n. T o prevent this , the bat tery
should only be d isconnec ted from the vehicle
e lec tric al system when absolu tely necessa ry
for repairs .
Vehicles not driven for long periods
If you do not drive you r vehicle over a period
of severa l days or weeks, elec trical compoÂ
nen ts are gr adually cut b ack o r swi tched off .
This redu ces energy cons umption and mainÂ
tains starting capab ility over a longer per io d
¢ page 195.
Be aw are tha t when you unlock yo ur vehicle ,
some of the conven ien ce f unct ions may no t
Checkin g and fillin g 233
opera te , such as the Conven ience key*, the reÂ
mote control or the power seat adjustment .
T he convenience functions will be ava ilab le
again when you switch on the ign ition and
start the eng ine.
Winter operat ion
D uring the w inte r mon ths, bat tery capacity
tends to dec rease as temperatures drop . This
is beca use more power is a lso consumed wh ile
starting, and the headlights, rear window deÂ
fogger, etc., are used more often.
Avoid unnecessary powe r consum ptio n, pa rÂ
ticu lar ly in city traffic or when traveling only
short distances. Let your autho riz ed Audi
dealer check the capacity of the vehicle batÂ
te ry before w inter sets in¢
page 235 . A well
c h arged battery will not on ly prevent s tarti ng
problems w hen the weather is cold, but wi ll
also last longer.
(D Tips
If you r vehicle is left s tandi ng for seve ral
weeks at extremely low temperatures, the
vehicle ba ttery s hould be removed an d
s to red w here i t w ill not fr eeze . T his w ill
p revent it from be in g damaged and having
to be replaced.
Working on the battery
Be especially careful when working on or near
the bat tery.
T he battery is lo cated in the l uggage compa rtÂ
ment unde r the floo r. B efo re you che ck a nyÂ
thi ng in the luggage com partmen t,
read and
heed all WARNINGS
¢ .&, .
Alw ays heed t he safety warning s, when workÂ
ing on the vehicle b atte ry or the vehicle e lec -
t rical system to prevent i njury. .,..
•
•
Page 238 of 302

236 Checking and filling
-Never charge a frozen battery. It may exÂ
plode because of gas trapped in the ice.
Allow a frozen battery to thaw out first.
- Do not reuse batteries which were froÂ
zen. The battery housing may have cracked and weakened when the battery
froze .
- Charge the battery in a well ventilated
area . Keep away from open f lame or elecÂ
trical spark . Do not smoke. Hydrogen gas
generated by the battery is exp losive.
- To reduce the danger of explosion, never
connect or disconnect charger cables
wh ile the charger is operating.
- Fast charg ing a battery is dangerous and
should only be attempted by a compeÂ
tent technician with the proper equipÂ
ment.
- Battery acid that may spill during chargÂ
ing should be washed
off with a solution
of warm water and bakin g soda to neuÂ
tralize the acid.
Never use a fast charger as a booster to
start the engine. This will se riously damÂ
age sensitive electronic components, such
as control units, relays, radio, etc., as we ll
as the battery charger .
Battery replacement
The new battery must have the same specifiÂ
cations and dimensions as the original equipÂ
ment battery.
I ntell igent energy management in your vehiÂ
cle is respo nsible for distributing the electr iÂ
cal energy throughout your vehicle
c::> page 195. The intelligent energy manageÂ
ment system wi ll keep the engine battery
charged better than vehicles without this sysÂ
tem. To make sure the additional electrical enÂ
ergy is available once again after you have
changed the battery, we recommend that you install batte ries of the same type and man uÂ
facture only (the same as those installed at
the time your vehicle was delivered). Specifi- cations are listed on the
battery housing. Your
authorized dealer must code the battery in
the energy management system to enab le you
to use the energy management functions corÂ
rectly after replacing the battery.
T he new battery must have the same capacity,
voltage (12 volts), amperage, construction and plug sealing .
When installing the battery, make sure the ig Â
nition and all electrical consumers are switchÂ
ed off.
(D Note
Make sure the ventilation hose on the side
of the battery is connected, otherwise
fumes or battery acid can leak out .
@ For the sake of the environment
Because of the prob lem of proper disposal
of a battery, we recommend your authorÂ
i zed Audi dealer change the battery for
you. Batteries contain sulfuric acid and
lead and must always be disposed of propÂ
erly in compliance with a ll environmental
regulations. Disposing of veh icle batter ies
improperly is very dangerous to the enviÂ
ronment .
Windshield/headlight
washer container
Fig. 183 En g in e compa rtm ent: w indshi eld washe r flu Â
i d reservo ir
T he washer fluid conta iner is marked w ith the
symbol~ on its cap .
.,. Before you check anything in the engine
compartment,
always read and heed all
Page 242 of 302

240 Tires and wheels
Maximum loaded vehicle weight
means t he sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity we ight, and
(d) P rod uction options weight
Maximum (permissible) inflation pressure
me ans t he max imum co ld inflation pressu re
to which a tire may be in flate d. Also called
"maxim um inflation p ress ure."
Normal occupant weight
means 150 lbs. (68 kilog rams) times the
nu mbe r of o ccupants seated in t he vehicle up
to the tota l sea ting capaci ty of yo ur vehicle .
Occupant distribution means dist ribution of occupants in a veh icle .
Outer diameter means t he overa ll diameter of a n in flated new
tire.
Overall width
means t he linear dis tan ce between the ex ter iÂ
ors o f th e sidewalls of an inflated tire, in cl udÂ
ing e levations due to labeling, decorations, or
p rotective bands o r ribs.
Ply
means a laye r of r ubber-co ate d parall el c ords.
Production options weight
means t he comb ined we ight of those installed
regular produc tion options weigh ing ove r 5
l bs . (2 .3 kg) in excess of t hose standard items
which they repla ce, no t previously considered
in cur b weight o r acc essory weig ht, incl uding
h eavy duty brakes, r ide leve le rs, roof ra ck,
h eavy duty ba tte ry, a nd specia l trim .
Radial ply tire
means a pneumatic t ire in which the p ly co rds
t ha t ex tend to the beads are laid a t sub stan Â
ti ally 9 0 degrees to the ce nt erline o f the
trea d. Recommended inflation pressure
see
<=>
page 239, C old tire infl atio n pressure.
Reinforced tire
means a tire design to operate a t higher loads
and at h igher inflation pressures than t he corÂ
r espondi ng stan da rd tire. Reinforced tires
may be identifie d as "X L", "xl" , "EX TRA LOAD",
o r "RF " on t he sidewa ll.
Rim
means a metal su ppo rt for a tire or a t ire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter of the bead seat. If
you change your wheel s ize, you w ill have to
purchase new tires to match th e new r im diÂ
ameter .
Rim size designation
means r im diameter and width.
Rim width
means nom inal dista nce between rim flan ges .
Sidewall
means tha t port ion of a t ire betw ee n t he
t read a nd bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
r a ti ngs range from 93 mph ( 150 km/h) to
186 mph (298 km/h)
~ page 250. Yo u may
not fi nd this information o n all ti res because
it is no t re quir ed by law.
T he speed rating letter code, wh ere applicaÂ
ble , is molde d on the tire sidewall a nd indiÂ
c ates the max imum pe rmissibl e road speeds
<=> A in Winter tire s on page 2 54.
Tire pressure monitoring system*
mea ns a system that detects when o ne or
more of a veh icle 's tires are unde rinf lated an d
ill uminat es a low tir e pr es sure wa rning t ellÂ
t a le.
Page 301 of 302

It has always been Audi's policy to continuÂ
ously improve its products . Audi, therefore,
reserves the right to make changes in design
and specifications, and to make additions or
improvements in its products, without incurÂ
ring any obligation to install them on prodÂ
ucts previous ly manufactured .
Text, illustrat ions and specifications in th is
manual are based on the most up-to-date inÂ
formation available at the time of printing.
A ll rights reserved. May not be reproduced or
translated in whole or in part without the
written consent of AUDI AG. Spec ificat ions are
subject to change w ithout notice. "Aud
i", "q uatt ro" and the four rings emblem
are registered trademarks of AUDI AG. "AB" is
trademark of AUDI AG .
Editorial deadline: 09/17/2010
@ For the sake of the environment
Printed on environmentally friendly paper
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© 2010 AUDI AG