2015 AUDI A3 wheel size

236 Tires and wheels
unbalanced, resulting in vibrations you can
usually feel through the steering whee l.
Unbalanced wheels must be rebalanced to
avoid excessive wea r on steer ing, suspension
and tires . A wheel must a lso be rebalanced
when a new tire is installed.
Incorrect wheel alignment
I ncorrect wheel alignment can cause exces­
sive tire wear, impair ing the safety of the veh i­
cle. If tires show excess ive wear, have the
wheel alignment checked by an authorized
Audi dealer or qualified workshop.
All-wheel drive
Vehicles w ith quattro must a lways have tires
of the same size, construction and tread type.
F or details see
<=> page 190 .
A WARNING
Sudden tire failure can lead to loss of con­
trol, a crash and ser ious persona l injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- 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 t ires.
- 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 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 o f vehicle control.
New tires and replacing tires and wheels
New tires and wheels have ta be broken in .
Fig. 160 Tire specificat ion codes on the s idewall of a
tire
No. Description
@ Nomina l w idth of t ire in mill imeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® L oad index and speed rating
(J) U.S . DOT tire identification number
® Audi Origina l tire
® Sever snow conditions
@ T ire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
T he tires and rims are essential parts of the
vehicle 's design . The tires and rims approved
by Audi are spec ially matched to the charac­
te ristics of the vehicle and can make a major .,..

238 Tires and wheels
T up to 118 mph (190 km/h)
U up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)
1l
Z over 149 mph (240 km/h)ll
W up to 168 mph (270 km/h)ll
Y up to 186 mph (298 km/h)l)
Your veh icle is normally factory equipped with
tires , which possess excellent driving charac­
teristics and give your Audi opt imum driving
comfort. An electronic speed limiter
c:> page 30 will normally prevent your vehicle
from going faster than the tire speed rating
c:> & .
U.S . DOT Tire Identification Number (TIN)
and tire manufacture date
This is the tire's "serial number". It begins
with the letters "DOT" and indicates that the
tire meets all federal standards . The next two
numbers or letters indicate the plant where it
was manufactured, and the last four numbers
r epresent the week and year of manufacture.
F or example, the numbers 4513 mean the tire
was produced in the 45nd week of 2013. The
other numbers are marketing codes that may
or may not be used by the tire manufacturer .
T his information is used to contact consumers
if a tire defect requires a recall.
Audi Original tire
Tires with the identification "AO" or "RO" have
been specially matched with your Audi . We
recommend using only these tires because
they meet the highest standards regarding
safety and driving characteristics when used
correctly . Your authorized Audi dealer will
gladly provide you with more information .
Tire ply composition and materials used
The number of plies indicates the number of
layers of rubber-coated fabric in the tire. In
general, the greater the number of plies, the more weight a tire can support . Tire manufac -
ll F t· "t h . or ires w 1 a m ax im um s pee d ca pabil ity ove r
1 4 9 mp h (240 k m/h) , tire man ufact urers sometimes
use the lette rs " ZR."
turers also must indicate the materials in the
tire, which include steel, nylon, polyester, and
others .
Maximum Load Rating
Th is number ind icates the maximum load in
kilograms and pounds that can be carried by
the tire.
Tire quality grading for treadwear,
traction, and temperature resistance
T read wear, traction and temperature grades
c:> page 239.
Maximum Permissible Inflation Pressure
This number is the greatest amount of air
pressure that should ever be put in the tire
un der normal driv ing conditions .
_& WARNING
= -
- Using incorrect or unmatched tires and/
or wheels or improper tire and wheel
combinations can lead to loss of control
collision and serious personal in jury.
'
-Always use tires, rims and whee l bolts
that meet the specifications of original factory-installed tires or other combina­
tions that have been specifically ap­
proved by the vehicle manufacturer.
- 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 w ith special care and at lower
speeds.
- Never mount used tires on your veh icle if
you are not sure of the ir "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire fa ilure
and loss of vehicle control.
- All four whee ls must be fitted with radial
tires of the same type, size (rolling cir­ cumference) and the same tread pattern . ..,_

24 0 T ire s and wheel s
Traction
The traction grades, from highest to lowest,
are AA, A, Band
C. T hose grades represent the
tire's ability to stop on wet pavement as measured under controlled conditions on
specified government test surfaces of asphalt
and concrete. A tire marked C may have poor
traction performance
c:> .&. .
Te mp eratu re
The temperature grades are A (the highest),
B, and
C, representing the t ire's resistance to
the generation of heat and its ability to dissi­
pate heat when tested under con trolled condi­
tions on a specified i ndoor laboratory test
wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead
to sudden tire failure
c:> ,& .
The grade C corresponds to a level of perform­
ance which all passenger car tires must meet under the Federal Motor Veh icle Safety Stand­
ard No .
109 . Grades Band A represent h igher
l eve ls of pe rformance on the laboratory test
wheel than the m inimum required by law.
.&_ WARNING
T he traction grade assigned to this t ire is
based on stra ight-ahead braking traction
tests, and does not include acceleration,
cornering, hydrop laning o r peak traction
character istics.
A WARNING
The temperature grade for this tire is es ­
tablished for a t ire that is properly inflated
and not overloaded. Excessive speed, un­
derinflation, or excessive loading, either
separately or in combination, can cause
heat buildup and possible tire fa ilu re.
-
Winter tires
Winter tires can improve vehicle handling on
snow and ice . At temperatures below 45 °F
(7 °C) we recommend changing to winter
tires.
In some heavy snow areas, local governments
may require true w inter o r "snow" t ires, those
with very deeply cut tread . T hese tires should
o n ly be used in pairs and be installed on a ll
f o ur wheels . Make sure you purchase snow
t ir es that are the same size and construction
type as the othe r tires on yo ur vehicle.
If your vehicle is equ ipped w ith all-whee l
drive*, t his w ill improve traction during win ter
driv ing, even with the standard tires . Howev ­
er, we strongly recommend that you always
equip all four wheels on your vehicle w ith cor­
rect ly fitted winter tires or all-season t ires,
when winter road condit ions are expected.
This also improves the veh icle 's brak ing per­
formance and reduces stopping d istances .
Summer tires provide less grip on ice and
snow.
Winter tires (snow tires) must always be fitted on all fo ur whee ls .
Ask your au thorized A udi dealer or qualified
workshop for permit ted
winter ti re size s. Use
only radial winter tires .
Winter tires lose their effec tivenes s whe n the
tread is wo rn down to a depth o f
0.157 inch
(4 mm) .
Only d rive w ith w inter t ires under w inte r co n­
ditions. S umme r tir es handle bette r whe n
the re is no snow o r ice on the roads and the
temperature is above 45 °F (7 °C) .
If you have a flat ti re, see notes on spare
whee l
c:> page 236 .
Please always remember that winter tires may
have a lowe r speed rating than the tires o rigi­
nally i nstalled on your vehi cle at the time it
was manuf actu red. P lease see
c:> page 237,
Speed rating (Letter code)
for a lis ting o f the
speed rating lette r codes and the max imum
speed at which the tires can be driven . ..,.

The speed rating letter code (c::> page 228) is
on the side wall of the tire
c::> page 236.
A WARNING
Winter tires have maximum speed limits
that may be lower than your vehicle's max­ imum speed . Always know the maximum
speed before driving off . Never drive faster
than the speed permitted for your specific
w inte r tires . This will cause damage to the
t ires leading to an ac ciden t and se rious
pe rsonal in jury to you and yo ur passen­
ge rs .
A WARNING
Dr iv ing faster than the maximum speed
for which the winter tires on your vehicle
were designed can ca use tire fai lure in­
cl uding a blowout and sudden deflat ion,
loss of control, crashes and serious per­
sonal injuries . Have worn or damaged tires
rep laced immed iate ly.
- Winter tires have maximum speed rat ing
that may be lower tha n your ve hicle's
maximum speed .
- Never drive faster than the speed for
w hich the winter or other tires installed
on your veh icle are rated .
A WARNING
Always adjust your d rivi ng to the road and
traffic conditions. Neve r let the good ac­
c eleration of the w inte r ti res an d all-whee l
drive temp t you in to taking extra r is k s . A l­
ways remember :
- When bra king, an a ll-wheel d rive vehicle
hand les in the s ame way as a front drive
vehicle.
- Drive carefu lly and reduce your speed on
icy and slippery roads, even winter tires
cannot he lp under black ice conditions.
@l For the sake of the environment
Use summe r tires w hen weathe r cond i­
tions permit. They are quieter, do not we ar
as quickly and red uce fue l cons umption.
-
Tire s an d wheel s 241
Snow chains
Snow cha ins may be fitted only to the front
whee ls , a nd o nly to certa in ti re si zes. As k your
autho rized Aud i dea ler on whi ch tire sizes
snow chains can be used.
If you a re go ing to use snow cha ins, then you
mus t install t hem on the front whee ls a t
least.
T he snow chains must have low-p rofi le links
and must not be th ic ker than 0.53 inch
(13,S mm) , in cl ud ing t he lo ck.
Remove whee l cen ter covers and t rim discs
before putt ing snow cha ins on your veh icle
c::> (]) . For safety reasons cover caps must t hen
be fi tte d over the wheel bol ts. These are av ail­
able from autho rized Aud i dealers .
A WARNING ,..__
Using the wrong snow chains for your vehi ­
cle o r insta lling them incorrect ly can in ­
crease the risk of loss of contro l leading to
serious personal injury.
- Snow chains are available in different
sizes . Always make sure to follow the in­
structions prov ided by the snow chai n
manufacturer .
- When driving wit h snow cha ins neve r
drive faster than the speed permitted for
your specific snow chains .
- Always observe local regulations.
(D Note
- Remove snow c hains before driving o n
roads not covered with snow to avoid
damaging tires and wearing the snow
chains down unnecessarily.
- Snow chains, which come into direct con ­
tact with the whee l rim, ca n scratch or
damage it. Therefore, make sure that the
snow chains are suitably covered . Check
t he pos ition of the snow chains afte r
dr iv ing a few yards and co rrect if neces­
sary. Follow the inst ru ct io ns from the
snow chain m anufacturer w hen do ing so. ..,.
•
•
•

In o rder to minimize the occu rrence o f impact
damage to the tires of your vehicle, we recom­ mend that you observe the following precau­
tions :
- Always maintain recommended inflation
pressures. Check your tire pressure every
2,000 miles (3,000 km) and add a ir if neces­
sary.
- Drive carefu lly on roads with potholes, deep
gullies or ridges. The impact from driving
t h rough or over such obstacles can damage
your tires. Impact with a curb may also
cause damage to your tires .
- After any impact, immediately inspect your
tires or have them inspected by the nearest
authorized Aud i dealer . Replace a damaged
t ire as soon as poss ible .
- In spect your t ires every 2,000 miles (3,000
km) for damage and wear . Damage is not al­
ways easy to see. Damage can lead to loss of
air and unde rinflation, wh ic h could eventu­
ally cause t ire fail ure.
If yo u be lieve that a
tire may have been damaged , replace the
tire as soon as possible.
- These tires may wear more qui ck ly than oth ­
ers.
- Please a lso remembe r that, whi le these t ires
deliver respons ive handling, they may ride
less comfortably and make more noise than
other choices.
Reduced p erformance in winter /cold
sea son condit ion s
All tires are designed for certain purposes .
The low aspect ratio, ultra hig h performance
tires originally installed on your vehicle are in­
tended for max imum dry and wet road per­
f ormance and handling . They are not suitable
for cold, snowy or icy weather cond it ions .
If
you dr ive under those circumstances, you
should equip your vehicle with all-season or
winter tires, which offer better traction under
those cond it io ns . We suggest you use the rec­
ommended snow or all -season tires specified
for your ve hicle, or their equiva lent .
Refe r to ~
page 240 for mo re deta iled info r­
ma tion regarding w in ter t ires.
Tire s an d wheel s 243
Tire pressure
monitoring system
ill General notes
Each tire, incl uding the spare (if provided),
shou ld be checked monthly when co ld and in ­
flated to the inflation pressure recommended by the veh icle manufac turer on the veh icle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the
s ize indicated on the vehicle placard or tire i n­
flat io n pressu re labe l, you shou ld dete rm ine
the p roper t ire inflation p ress ure fo r those
t i r es).
As an added safety feature , your veh icle has
been equipped with a tire pressure mon ito ring
system ( TPMS) that illum inates a low ti re
pressure te lltale when one or more o f your
t ires is significant ly under -inflated . Acco rding ­
l y, when the low tire pressure te lltale i llumi­
nates, you should stop and check your tires as
soon as possib le, and inflate them to the
proper pressure. Driving on a sign ificantly un­
der- inflated tire causes the tire to overheat
and can lead to tire fa ilure. Under-inflation al­
so reduces fuel eff ic iency and tire tread life,
and may affe ct the vehicle's hand ling and
stopp ing ability.
Please note that the TPMS is not a substitute
fo r proper tire ma intenance, and it is the driv­
er's respons ibility to maintain co rrect tire
pressure, even if under -inflation has not
rea ched the leve l to tr igger illuminat ion of the
TPMS low tire p ressure tellta le .
You r vehicle has also been equipped with a
T PMS ma lfunction indicator to ind icate when
the sys tem is not operating properly . T he
TPMS ma lfunction indicator is combined with
the low tire pressure te lltale. When the sys­
tem detects a malfunction, the telltale will
flash for approximate ly one min ute and then
rema in continuously illum inated . Th is se­
quence will continue upon subsequent vehicle
start-ups as long as the malfunct io n exists.
When the malfunction indicator is illum inat-
ed, the system may not be ab le to detect or
lilJ,
•
•

Loading the roof rack . . . . . . . . . . . . . . . . . 60
Lackin g/unlocking
by remote control .................. 33
with the central locking switch .. .. .. .. 35
with the convenience key . . . . . . . . . . . . . 34
with the door lock ............ .. .. .. 35
Long-term memory .................. 27
Low beam Indicator light . . . . . . . . . . . . . . . . . . . . . 24
Low beams . ................... ..... 42
Lower universal anchorages (Canada) .. . 180
Lugg age compartment ............ ... . 60
Cargo net .. ................. .. .... 62
Increasing the size ........ .... .. .. .. 61
Loading .. ... .................. .. .. 60
Pass-through . . . . . . . . . . . . . . . . . . . . . . 63
Reversible mat ..................... 62
Socket ... .. ................. .. .... 56
Stowing luggage .................. 127
Tie-downs . . . . . . . . . . . . . . . . . . . . . . . . . 62
Luggage compartment lid
Central locking . . . . . . . . . . . . . . . . . . . . . 3 7
Emergency release ........ .... .. .. . 246
Lumbar suppo rt . . . . . . . . . . . . . . . . . 53, 54
M
Maintenance ................. ..... . 268
Maintenance intervals
with driver information system ........ 13
Malfunction Indicator Lamp (MIL) . . 23, 29
Mirro r
Digital compass switching on and off . .. 50
dimming . .. ................. .. .... 49
Vanity mirror ............ ...... .... 46
Mirror compass .................. .... SO
Mirrors Adjusting the exte rior mirrors . .. .. .. .. 48
Monitoring the Advanced Airbag System 152
Motor
Index 279
Navigation system CD-ROM player . . . . . . . . . . . . . . . . . . . . . 58
New tires and wheels ................ 236
NHTSA Contacting .. .. .. .. ..... .......... 129
Number of seats ..... ............... 131
Number of vehicle keys ............... 31
0
Occupant seating positions ........... 122
Octane rating ... .... ............... 206
Odometer ...... .................... 11
Oil Ind icator light . . . . . . . . . . . . . . . . . 23, 24
also refer to Engine oil . . . . . . . . 212, 215
Oil change interva l
with driver information system . . . . . . . . 13
On-board computer . . . . . . . . . . . . . . . . . . 26
Operation (multifunction steering
wheel) ..... ..... .................. 27
On-Board Diagnost ic System (OBD)
Electronic speed limiter .............. 30
Malfunction Indicator Lamp (MIL) .. .. . 29
Opening ................. ........... 31
Fuel filler door ... .. . .. ... .... ..... 208
Hood ........ ... .. ............... 211
Luggage compartment lid ............ 37
Panorama sunroof .................. 40
Windows ......................... 38
Opening/closing with the central locking switch ........ 35
with the convenience key ........ .. .. . 34
with the door lock .................. 35
Operate your vehicle economically and
minimize pollution .................. 195
Other equipment (efficiency program) . .. 29
Outside air temperature display ........ 11
Overview illustration (cockpit) . . . . . . . . . . . 8
•
•
stopping (driver messages with mechani-p
cal ignition key) ................ .... 75
Multifunction steering wheel . .. .. .. .. .. 27 Paint damage
203
On-board computer ................. 27 Paint No
........................... 265
•
Panorama sunroof ... . .. .. ... ... .... . 40
N
Convenience opening/closing ......... 39
Emergency closing ................ .. 41
Natural leat her care/cleaning .. .. .. .. . 204