2012 AUDI A3 tires

174 Trailer towing
Trailer towing Driving with a trailer
General information
Your Audi was designed primarily for passen­
ger transportation .
If you plan to tow a tra iler, p lease remember
that the addit ional load will affect durability,
economy and performance.
T railer towing not on ly places more stress on
the vehicle, it also calls for more concentra­
tion from the driver.
F or this reasons, always follow the operating
and drivi ng in str uctions provided and use
common sense.
Technical requirements
Traile r hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suita­
b le for your veh icle and trailer and must be
mounted securely on the ve hicle's chassis at a
technically sound location. Use only a trailer
h itch with removable ba ll mount. Always
check with the tr ailer hitch manufac turer to
make sure tha t you are using t he cor rect
hitch.
Do not us e a bumper hitch .
The hitch must be installed in such a way that
it does not interfere with the impact-absorb­
ing bumper syst em. No modifications should
be made to the vehi cle exhaust and brake sys ­
tems. From time to time, check th at a ll hitch
mo unt ing bo lts remain securely fastened.
When you are not towing a trailer, remove the
tra iler hitch ball mount. This prevents the
h itch from causing damage sho uld your ve hi­
cle be str uck from behind
¢ A .
Tire pressure
When tow ing a traile r, inflate the t ires of your
ve hicle to the co ld tire pressure listed under
"Full load"on the stick er on the rig ht doo r- jamb. Inflate trailer tires to trailer and tire
manufacturers' specifications.
Lights
T he headlight set tings sho uld be checked with
t h e trai le r attached before d riving o ff. Have
the headlights adjusted as necessary so tha t
yo u can see t he road ahead b ut not blind on­
coming traffic.
Check to make sure bo th ve hicle and tr ailer
lights are wo rk ing properly .
Engine cooling system
T owing a t railer makes the engine work hard­
er.
It i s impo rtant that the cooling system's
performance stands up to the additional
stra in. Make sure tha t the cooling sys tem has
enough fluid.
Trailer brakes
If your trailer is equipped with a brak ing sys­
tem, c heck to be sure t hat it conforms to all
regula tions.
The trailer hyd raulic brake system must not be
directly connected to the vehicle's hydraulic
brake system.
Safety ch ains
Be sure trailer safety chains are properly con­
nected from the trailer to the hitch on the ve­
hicle. Leave enough slack in the cha ins to per­
mit turning co rne rs. When yo u in stall safety
c h ains, ma ke sure they will not drag on the
r oad when you a re driving.
The chains should cross under the t railer
tong ue to prevent it from dropping in case of
separation from the h itch.
Trailer lights
Trai ler lights must meet all regulations. Be
sure to check w ith your authorized Audi dealer
for correct w ir in g, sw itches and re lays .
Mir rors
If you are unable to see the traffic behind you
us ing the regular outside mirrors, then you

180 Cleaning and protection
@ For the sake of the environment
In the interest of the environment, the ve­
hicle should on ly be washed in special
wash bays.
Washing your vehicle with a power
washer
Cleaning the exterior of your car with a high­
pressure power washer is safe as long as you
observe a few simple rules .
~ Before using the power washer, make sure
you have read and understood the WARN­
INGS
c::> A in General information on
page 178 .
~ Always fo llow the operating instructions for
the power washer.
~ Make sure tha t the jet o n the spray hose
produces a "fan shaped spray".
~ Do not ho ld the spray nozzle too close to
soft materia ls.
When clean ing the veh icle wit h a power wash­
er
always fo llow the operating instructions .
This applies particularly to the
oper ating
pressu re
and the sp ray ing distance . Maintain
a sufficient distance to soft materials such as
rubber hoses and sound/vibrat io n deadening
materials (part icularly on the underside of the
engine hood). Do not use a jet wh ich sprays
water in a
dire ct stream or one that has a ro ­
ta ting
jet.
Water temperature should not exceed 140 °F
(60 °().
A WARNING
Never wash tires w it h a je t that sprays wa­
t er in a direc t stream. This cou ld cause in­
visib le damage to the tires and weake n
t hem, even if the spray is from a re latively
long distance and for a short time . Dam­
aged and weakened t ires can fa il and cause
accidents and persona l injury.
([) Note
To avo id damag ing your vehicle, always
make sure t hat there is sufficient distance between the spray head and soft materia
ls
li ke rubber hoses, plastic parts and sound­
deaden ing mater ials. Never aim the spray
head at the same point for a long time.
This also applies to cleaning headlights
and painted bumpers. Remember: the
closer the nozzle is to the surface of the
mater ia l, the greater the stress on the ma­
te rial.
Waxing and Polishing
Waxing
A good wax coating protects the vehicle pain t
to a la rge ex ten t agains t the envi ronmental
f actors lis ted under
c::> page 178, Washing and
even against sli ght scratches .
You can use a liquid car wax to prote ct yo ur
paint as soon as one wee k afte r you r vehicle
has been delivered .
E ven if you regu larly use a
wa xing p rocess in
a ut oma tic car washes, we recommend tha t
yo u manually apply a coat o f wax to g ive the
paint extra protection, part icu larly if water no
l onger beads on t he clean paint.
Protect plast ic body parts with car wax in the
same w ay as the veh icle body.
D ur ing warm weather dead insects tend to
collect on the front bumper and on the fo r­
wa rd area of the hood. They are much easier
to remove from p aint th at is waxed
often.
Polishing
Polish your vehicle only if the paint has lost its
sh ine and the gloss cannot be broug ht back
with wax.
If the polish used does not contain preserva­
t ive compou nds, the paint must be waxed af ­
te rwards .
A WARNING
Always read and heed all WARNI NGS and
other info rmation
c::> page 178 .
(D Note
Do not use car wax on

182 Cleaning and protection
• Wipe the windows dry with a clean piece of
cloth or kitchen paper towel.
The best way to remove snow from w indows
and mir rors is to use a brush. Use a non -abra­
sive
pla stic ice scraper -better still, a spray
deicer -to remove
ic e from windows and mir­
rors.
The windows must not be cleaned with insect remover or wax since these can interfere with
the function of the windshield wiper blades (chatter).
O il, grease or silicone residue can be removed
with
glass cle aner or silicone remo ver. How­
ever, wax residue req uires the use of a specia l­
ly form ulated solvent. P lease contact your au­
thor ized Audi dealer for adv ice on safe prod­
ucts for wax removal.
Windows sho uld a lso be cleaned on the inside
at regular interva ls.
Never dry windows with the same chamois
that you use to dry painted s urfaces. Wax resi­
due on the chamois can impair vision thro ugh
the windows.
A WARNING
- The windshie ld m ust not be treated with
water-repellent materials. They can i n­
c rease glare under poor visib ility condi­
t ions such as wetness, darkness, o r whe n
the sun is low on the hori zon. In addi­
t io n, they ca n cause the wi ndshield wip ­
ers to chatter .
- Always read and heed all WARN INGS and
othe r inform ation
Qpage 178.
0 Note
- Never use warm or hot water to remove
s now and ice from windows a nd mirrors.
This cou ld cause the g lass to c ra ck .
- To prevent damage to the wi res of the
r ear defogger, do not place any adhesive
sticke rs o n the inside of t he rear w indow
ove r the wires.
- To he lp prevent d irt from s cratch ing the
window, always scrape i n a forwar d di- rec
tion -pushing the sc raper away from
you -never bac k and fort h.
Steel wheels
Applies to vehicles: with steel wheels (e .g. if refitted with
winter tires)
The wheels also have to be cleaned.
• Always include the hub caps and wheel rims
when wash ing your vehicle to remove road
dirt, sa lt sprays and brake dust .
If necessary, use a commercial whee l cleaner
to remove accumulated brake dust.
The wheel rims are easier to keep clean i f they
are regularly coated with liq uid wax.
Paint scra tches shou ld be touched up as soon
as possib le to prevent corrosion
¢ page 181,
Touch-up paint.
A WARNING .....__
- Moisture and ice on brakes may affect
brak ing eff ic iency-
q page 163, General
information . Test the brakes ca refully af­
ter each vehicle wash .
- Always read a nd heed a ll WARNINGS and
the information
q page 178.
Cast (light) alloy wheels
Applies to vehicles : with Cast alloy wheels
-
Cast (light) alloy wheels require special care.
• Wash the w heels with a sponge or hose
brush every other week .
• For deep cleaning afterwards, use on ly a
ded icated acid-free cast alloy wheel cleaner.
• Rub a coat of
liquid wa x onto the rims every
three month. Be sure to reach and treat all
parts of the rim .
To preserve the decorative appearance of the cast alloy w heels, some special care is neces ­
sary. In addition to road dirt and salt, brake dust is also co rrosive . If left on fo r too long,
brake d ust can cause pitting.
U se only spec ial
acid -free cleaners formulated
fo r alloy r ims . Safe products are ava ilab le at ..,_

212 Tire s and wheel s
Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara­
tive ly small patch of rubber on each tire that
assures that a ll-impo rtant contact between
you, your vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry mo re weight than they can safe ly han­
d le, avoiding damage from road hazards and
reg ularly inspecting t ires for damage includ­
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separation and blowouts.
Avoiding damage I f you have to drive over a curb or similar ob­
stacle, drive very s low ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chem ica ls includ ing gre ase, o il,
gasoline and b rake fluid off the ti res .
Inspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedded in the treads.
Storing tires Mark tires when you remove them to indicate
the direction of rotation . Th is ensures you to
be ab le to mount them correctly when you re­
install t hem.
When removed, the whee ls or t ires should be
stored in a cool, d ry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on rims, in a horizontal pos it ion if
they are mounted on rims. New tire
s
New t ires have to be broken in¢&,. .
T he tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
pa tte rn .
Hidden damage
Damage to tires and r ims is ofte n not readily
vis ible . If you notice unusual v ibrat ion or the
vehicle p ulls to one side, th is may ind icate
t h at one of the t ires has been damaged . Th e
t ir es m ust be checked immed iate ly by an au ­
tho rized Aud i dea le r or q uali fied wor ks hop.
Unidirectional t ires
A un idirectional tire can be identified by ar­
rows on the sid ewa ll, that po int in the direc­
t ion the t ire is desig ned to rotate. You mus t
f ol low the specified d irection of rotation . This
is necessary so that these tires can develop
their optimum characterist ics regarding grip,
road no ise, wear and hyd rop laning resistance.
For more information ¢
page 241.
A WARNING
-New tires or tires that are old, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
be broken in . To reduce the risk of losing
control, a co llision and ser ious personal
in jur ies, d rive w ith special ca re fo r the
fi rst 350 m iles (560 km).
- Driving with worn or damaged tires can
le ad to loss of control, sudden tire fail­
ure, including a blowou t and sudden de­
fl ation, c rashes and seriou s personal in­
juries . Have wo rn or damaged t ires re­
p laced immediate ly .
- T ires age even if they are not being used
an d can fai l sudden ly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith specia l care and at low
speed.

-Never mount used tires on yo ur vehicle if
you are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
Glossary of tire and loading terminology
Accessory weight
means the comb ined weight (in excess of
those standard items wh ich may be rep laced)
of automa tic tra nsmission, power steering,
power br akes, power w indows, power sea ts,
radio, and heater, to the ex tent that these
items are avai lab le as factory -installed equip ­
ment (whether installed or not).
Aspect ratio
means the rat io of the height to the w idt h of
the tire in percent. Numbers of 55 or lower in ­
d icate a low sidewall fo r improved s teer ing re ­
sponse and better overall handling on dry
pavement.
Bead
means the pa rt of the t ire t hat is made o f
s teel wires, wrapped o r rein force d by ply cor ds
and that is shaped to fit the r im.
Bead separation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire.
Cold tire infl ation pressure
means t he tire pressure recommended by the
vehicle manufacturer for a t ire of a designated
size that has not been dr iven for more than a
couple of miles (kilometers) at low speeds in
the three hour period before the tire pressure
i s measu red or adjusted.
Tire s an d wheel s 213
-If you notice un usua l vibration or if the
veh icle pulls to one side when driv ing, a l­
ways stop as soon as it is safe to do so and check the wheels and tires for dam­
age.
Curb weight
mea ns the we ight of a motor ve hicle w it h
standard equipment in cl ud ing t he maximum
capa city of fuel, o il, and coolant, ai r cond i­
tion ing a nd addi tional weig ht o f optiona l
equipment .
Extra load tire
means a t ire designed to operate at higher
loads and at highe r inflat ion p ressu res tha n
th e co rresponding standard tire. Extra load
tir es my be i dent ified as "XL", "xl", "EXTRA
L O AD", or "R F" on t he sidewall.
Gross Axle Weight Rating ("GAWR ")
mea ns the load-carry ing capac ity of a s ingle
axle system, measured at the tire-ground in­
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
means the maximum total loaded we ight of
the ve hicle.
Groove
means the space between two adjacent tread
ribs.
Load rating (code )
means the maximum load tha t a t ire is rated
to carry for a given inflation press ure. Yo u
may not find this information on all tires be­
ca use it is not required by law.
Maximum load rating
me ans the load r ating for a tire at the maxi­
mum pe rm issi ble inf lat ion pressure for that
ti re . •
•
...

214 Tires and wheels
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 pressu re
to which a tire may be inflated. Also called
"maximum inflation p ressure."
Normal occupant weight
means 150 lbs. (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle.
Occupant distribution means distribution of occupants in a vehicle .
Outer diameter means the overa ll diameter of an inf lated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing e levations due to labeling, decorations, or
protective bands or ribs.
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the comb ined weight of those installed
regular production options weighing over 5
lbs . (2 .3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, r ide leve lers, roof rack,
heavy duty battery, and specia l trim .
Radial ply tire
means a pneumatic tir e in which the p ly cords
that extend to the beads are laid at substan­
tially 90 degrees to the centerline of the
tread . Recommended inflation pressure
see
~
page 213, Cold tire inflation pressure.
Reinforced tire
means a t ire designed to operate at higher
loads and at higher inflation pressures than
the corresponding standard tire . Re inforced
t ir es my be identified as "XL", "xl", "EX TRA
LOAD", or "RF" on the sidewall.
Rim
means a metal support 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 the new r im di­
ameter .
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges .
Sidewall
means that portion of a tire between the
t read and bead.
Speed rating (letter code)
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 224 . You may
not find this information on all tires because
it is not requ ired by law.
The speed rating letter code, where applica­
ble, is molded on the tire sidewall and indi­
cates the max imum pe rmissibl e road speeds
~ A in Winter tires on page 228.
Tire pressure monitoring system*
means a system that detects when one or
more of a veh icle's tires are underinflated and
illuminates a low tire pressure warning tell­
tale.

Tires and wheels 215
Tread
means that portion of a tire that comes into
contact with the road.
Tread separation
means pull ing away of the tread from the tire
carcass .
Treadwear indicators (TWI)
means the projections within the principal
grooves designed to give a visual indication of
the degrees of wear of the tread. See
c:> page 222, Tread Wear Indicator (TWI) for
more informat ion on measuring tir e wear.
Uniform Tire Quality Grading
is a tire information system developed by the
United States National Highway Traffic Safety
Administration (NHTSA) that is designed to help buyers make relative comparisons among
tires. The UTQG is not a safety rating and not a
guaran tee that a tire will last for a prescribed
number of miles or per form in a certain way.
I t simply gives tire buyers additional informa ­
tion to combine with other considerations,
such as price, brand loyalty and dea ler recom­
mendations. Under UTQG, tires are graded by
the tire manufacturers in three areas: tread­
wear, traction and temperature resistance.
The UTQG information on the tires, molded in­
to the sidewalls .
U.S. DOT Tire Identification Number (TIN)
This is the t ire's "serial number" It begins
with the letters "DOT" and indicates that the ti
re meets all 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 man ufacture.
For example,
DOT . .. 2211 ...
means that the tire was produced in the 22nd
week of 2011. The other numbers are market­
ing codes that may or may not be used by the
tire manufacturer . This information is used to
contact consumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and luggage load plus
150 lbs. (68 kilograms) times the vehicle's to­
ta l seating capacity as listed on the label lo­
cated either on the driver's side B-pillar or on
the inside of the fuel filler flap.
Vehicle maximum load on the tire
means that load on an individua l tire that is
determined by distributing to each ax le its
share of the maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individua l tir e that is
determ ined by distributing to each axle its
share of the curb weight, accessory weight,
and normal occupant weight (distributed in
accordance with tab le below
c:> page 215)
and dividing by two.
Occupant loading and distribution for vehicle normal load for various designated seating
capacities
Designated seating capacity,
number of occupants
5
Vehicle normal load, number Occupant distribution in a nor-
of occupants _____ mally loaded vehicle
3 2 in front, 1 in back seat
•
•

216 Tires and wheels
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle .
Fig. 167 Tire press ure labe l: loca ted ei the r on dr iver 's
side 8-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 interna­
tional 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 vehi­
cle can carry safely and the tire size. The prop­
er 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 inflat ion pres­
sure" recommendations. The tires would then
be underinflated and could fail suddenly .
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. Keep­
ing tires at the right pressure is also impor­
tant for safe and responsive vehicle handling,
traction, braking and load carrying .
Tire pres­
sures are particularly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permissible load -carrying capaci­
ties approved for your vehicle.
,;
•(=~: I : I :,.. I)@ ~
The~-----~---w-o- ....... -e.....i -·· - ­u ........ -.-..,.0, ... -....,.,...tot~---....... ._.,. -..
....
-..... ...........
- KPA. a PSI
- KPA.
a PSI
- KPA. a PSI
Fig. 168 Tir e pressure label
SU OWNER'S MANUAl FOR AD0"10NAL l10N VOl!ILEMANU£1. DU _,...,
POUR Pl.US DE
REHSEKi.\'IEME NTS
The recommended tire pressures for your Audi
depend on the kind of tires on your veh icle
and the number of passengers and/or amount
of luggage you will be transporting .
On USA vehicles, the t ire pressure label is lo­
cated on driver's side B-pillar . On Canada vehi­
cles, the tire pressure label is located e ither
on the dr iver 's side B-pillar or inside the fuel
filler flap . The tire pressure label lists the rec­
ommended cold tire inflation pressures for
the vehicle at its maximum capacity we ight
and tires that were on your vehicle at the time
it was manufactured.
If you wish to improve comfort when operat­
ing the vehicle at normal load (up to 3 occu­
pants), you can adjust tire pressures to those
specified for normal vehicle load. Before op­
erating 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 mon itoring
system * can on ly monitor the tire pressures
yo u have stored. The system does not recog­
nize the load condition of your vehicle.
T he effectiveness of the tire pressure monitor­
ing system * wi ll be impaired if you store nor­
mal load pressures but then operate the vehi ­
cle at its maximum load
¢ .&..
See the illustration ¢ fig. 167 for the location
of the label either on driver's side B-pillar or
i nside the fuel fi ller flap (color of the actual
IJI>