2015 AUDI A3 CABRIOLET rims

254 Tires and wheels
run flat tires. If run flat tires
are used, they must be in­
stalled on all four wheels. Mixing tire types is not per­
mitted.
@) Note
-For technical reasons, it is not generally possible to
use the wheel rims from
other vehicles. This can hold
true for wheels of the same
vehicle type.
- If the spare tire is different
from the tires that you have mounted on your vehicle
(for example winter tires or
wide prof ile tires), then use
the spare tire for a short pe­
riod of time only and drive
with extra care. Replace the
flat tire with the tire match­ ing the others on your vehi­
cle as soon as possible.
- Never drive without the
valve stem cap . The valves
could get damaged.
@) For the sake of the environment
Dispose of old tires in accord­
ance w ith the local require­
ments.
Uniform tire quality grading
- Tread wea r
- Traction AA A B C
- Temperature ABC
Quality g rades can be foun d where applicab le
on the t ire s ide wall between t read sho ulder
and maximum section width
¢ page 248,
fig . 176 .
For example: Tread wear 200 , Traction AA,
Tempera ture A .
All passenge r ca r tir es must con fo rm to Feder ­
al Safety Req uirements in ad dition to these
grades.
Tread wear
T he tread we ar g rade is a c omparative r ati ng
b as ed on the wea r ra te of the tire when tes ted
u nder con tro lled cond itions o n a specifie d
government test course .
F o r ex am ple, a tire gr aded 1 S0 would wear
o n e and one h alf ( 11/ 2) times as well on the
government course as a tire gr aded 10 0 .
T he re lative per forman ce of tires depen ds
up on the actu al cond itions of the ir use, h ow­
ever, and m ay dep art s ignific antly from the
no rm due to va ria tions i n driving ha bits, se rv ­
ice p ractices and differe nces in road c haracter­
ist ics and climate.
Traction
The tr actio n gr ad es, fro m hig hest to lowest,
are AA, A, Ban d
C. Those grades represent t he
ti re 's ability to stop on wet pavement as
measured unde r cont rolled conditions on
specified g overnment test surfaces of aspha lt
and co ncrete. A t ire mar ked C may have poor
traction performance
¢ A .
Temperature
The temperature g rades are A (the highest),
B, an d C, represe nting the tire's resistance to
the generation of heat and its ab ility to dissi­
pate heat when tested unde r controlled condi­
t ions on a specif ied ind oor l abo rato ry test
whee l.

256 Tires and wheels
loss of control, crashes and serious per­
sona l injuries . Have worn or damaged tires
replaced immediate ly.
- Winter tires have maximum speed rating
that may be lower than your vehicle's
maximum speed .
- Never drive faster than the speed for
which the winter or other tires installed
on your vehicle are rated.
A WARNING
Always adjust your driving to the road and
traffic conditions. Never let the good ac­
celeration of the winter tires and all-wheel
drive tempt you into taking extra risks. Al­
ways remember:
- When braking, an all-wheel drive vehicle
handles in the same way as a front drive
vehicle .
- Drive carefully and reduce your speed on
icy and slippery roads, even winter tires
cannot help under black ice conditions.
@) For the sake of the environment
Use summer tires when weather condi­
tions permit. They are quieter, do not wear
as quickly and reduce fuel consumption.
Snow chains
Snow chains may be fitted only to the front
wheels, and only to certain tire sizes. Ask your
authorized Audi dealer on which tire sizes
snow chains can be used.
If you are going to use snow chains, then you
must install them on the front wheels at
l east.
The snow chains must have low-profile links
and must not be thicker than 0.53 inch
(13.5 mm), including the lock.
Remove wheel center covers and trim discs
before putting snow chains on your vehicle
q 0 . For safety reasons cover caps must then
be fitted over the wheel bolts. These are avail­
able from authorized Audi dealers.
A WARNING
Using the wrong snow chains for your vehi­
cle or installing them incorrectly can in­
crease the risk of loss of control leading to
serious personal injury.
- Snow chains are available in different
sizes . Always make sure to follow the in­
structions provided by the snow chain
manufacturer.
- When driving with snow chains never
drive faster than the speed permitted for
your specific snow chains.
- Always observe local regulations.
@ Note
-Remove snow chains before driving on
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 wheel rim, can scratch or
damage it. Therefore, make sure that the
snow chains are suitably covered. Check
the position of the snow chains after
driving a few yards and correct if neces­
sary. Follow the instructions from the
snow chain manufacturer when doing so.
@ Tips
Where snow chains are mandatory on cer­
tain roads, this normally also applies to
vehicles with all-wheel drive .
Wheel bolts
Wheel bolts must always be tightened to the
correct torque.
The design of wheel bolts is matched to the
factory installed rims. If different rims are fit­
ted, the correct wheel bolts with the right
length and correct ly shaped bolt heads must
be used. This ensures that wheels are fitted
securely and that the brake system functions
correctly . .,..

268 What do I do no w?
-Pull the reversible blade from the screw ­
driver before you use the hexagonal
socket in the handle to t urn the whee l
bo lts.
- When mounting tires with
unid ire ctional
t re ad design
make s ure the tread pat­
tern is pointed the right way
¢ page 268.
-The wheel bolts should be clean and easy
to turn. Check for d irt and corrosion on
the mat ing su rfaces of both the whee l
and the hub. Remove all dirt from these
surfaces before remount ing the wheel.
Tires with unidirectional tread design
Tires with unidirectional tread design must be
mounted with their tread pattern pointed in the right direction.
Using a spare tire with a tread pattern
int ended fo r use in a specific dir ection
When us ing a spare tire w ith a tread pattern
i ntended for use in a specific direction, please
note t he following:
- The direction of rotation is marked by an ar ­
row on the side of the tire .
-If the spare t ire has to be installed in the in­
correct direction, use the spare tire only
temporarily since the t ire will not be able to
achieve its optimum perfo rma nce character­
ist ics with rega rd to aquaplaning, noise and
wea r.
- We recommend that you pay particular at­
tent ion to this fact du ring wet weat her and
that you adjust your speed to match road
condit ions .
- Replace the fla t tire w ith a new one and
have it ins talled on your veh icle as soon as
possible to restore the handling advantages
of a unidirectiona l tire .
Notes on wheel changing
Please read the information ¢ page 248, New
tires and replacing tires and wheels
i f you are
go ing to use a spare t ire which is d ifferent
from the tires on your veh icle . After you change a tire:
-
Ch eck the tire pr essure on th e spar e imm e­
diatel y after in stallation .
- Hav e th e whe el bolt tight ening torque
c h ec ked with a torque wr ench as soon as
po ssible by your author ized Audi de aler or
a qu alified servic e sta tion.
- With ste el and alloy wheel r im s, the wheel
bolt s ar e c orre ctl y tightened at a torque of
9 0 ft lb (120 Nm ).
- If you notice th at the wheel b olt s ar e co r­
rod ed and diffi cult to turn w hile changing
a tire , the y should be repl aced before you
check the t ightening to rque.
- Repl ace the flat tire with a new o ne and
ha ve it in stalled on your vehicle as soon a s
possible. Remount the wheel cov er.
Until then , dri ve with extra care and at re­
duc ed sp eed s.
A WARNING
-
- If you are going to equip your vehicle
with tires or rims which differ from those
which were factory installed, then be sure to read the information
¢ page 248,
New tires and replacing tires and
wheels.
- Always make sure the damaged wheel or
even a flat tire and the jack and tool kit
are properly secured in the luggage com­
pa rtment and are not loose in the pas­
senger compartment.
- In an accident or sudden maneuver they
could fly forwa rd, injuring anyone in the
veh icle.
- Always sto re damaged wheel , jack and
too ls se curely in the luggage compart­
men t. Otherwise, in an accident or s ud­
den maneuve r they could f ly forwa rd,
causing injury to passengers in the vehi­
cle.

288 Index
Centra l indicator light .... .. .. .. .... . . 1 3
Central locking ............. ... .. .... 3 1
Ce ntr al loc king switch ..... .. .. .... .. 35
Conven ience key . . . . . . . . . . . . . . . . . . . . 34
Emergency locking ........ .. .. .. .. .. 37
Folding the exterior mirrors .. .... .. .. 36
Luggage compartment lid .. .. .. .... . . 38
p . d ower win ows ........... ... .... . . 39
Remote control key ....... .. .. .. .. .. 33
Safety central locking . . . . . . . . . . . . . . . 3 7
Setting .. ................. ...... ..
36
Certification ............. ... .. .... . 285
Changing a wheel ................... 263
Changing engine oil ........ .. .. .. .. . 219
Checking
Tire pressure ..... ......... ... .... .
240
Child restra ints
Danger of us ing c hild restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . .
148
Where can I get addit ional information
about child restraints and their use? ..
187
Ch ild restra int system anchors ... .. ... 183
Child safety .... ............. .. .... . 169
Convertible lo cking retractor .. .. .. ... 180
Important safety instructions for using
ch ild safety seats .............. ....
173
Important things to know when driving
with ch ildren .....................
169
Tether anchors .................... 185
Tether straps . ........... .... .... . 185
Child safety lock
Power wi ndows . . . . . . . . . . . . . . . . . . . .
38
Ch ild safety seats ............ .. .. .. . 175
Booster seats ............ .. .. .... . 178
Convertible child seats .......... .. . 176
Convertible locking retractor . . . . . . . . . 180
H ow do I properly install a child safety
seat in my vehicle? ........ .. .. .. .. .
173
Infant seats ...................... 175
Install ing .. .. ... ..... ..... .. .. .. . 180
Installing a child restraint using the
L ATCH system .... ..... ... .. .. .... .
185
LATCH system .. . ...... ... .. .. .... . 185
Lower anchorages ............ .... . 184
Mount ing and releasing the anchorage
hook .. ... ................... ... .
185
Safety instructions . . . . . . . . . . . . . . . . . 173
Unused safety belts on the rea r seat .. 17 5 Cleaning
Cleaning/removing ice from windows
.. .
Cleaning Alcantara . ... .......... .. . .
204
206
207
Cleaning artificial leather ......... .... 20 7
Cleaning carbon parts . . . . . . . . . . 206, 207
Cleaning contro ls .. ... .. ..... ... .. .. 207
Cleaning decorative parts/trim ........ 206
Cleaning displays .. ............. .... 207
Cleaning exhaust tail pipes .... ... .. .. 205
Cleaning plastic pa rts ............... . 206
Cleaning rims ... .. ... .. ..... ... .. .. 205
Cleaning seat covers ............. .. .. 20 7
Cleaning textiles . .. .......... ....... 207
Cleaning the tail lights . .. ..... ... .. .. 205
Cleaning th e wind deflector ........... 206
Climate control system
Key recogni tion . . . . . . . . . . . . . . . . . . . .
70
Climate control system (automatic)
Adjusting air vents . . . . . . . . . . . . . .
73 , 74
Air distrib ution, air vents ..... ... .. .. . 73
Audi drive select .. ... ...... .... .. .. 107
AUTO (climate control system) ....... . 72
B lower ....... .................... 73
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Defrost ing the windsh ie ld .......... .. 73
Rea r window defogger .......... .... . 74
Recirc ulat ion mode ............ .... . 73
Setting the temperatu re . . . . . . . . . . . . . 73
synchronizing .... .. ... ..... ... .. .. . 73
Climate control system (manual)
Adjusting air vents ... .......... .
71, 7 4
Adjus ting the temperature ........... 71
Air distrib ution, air vents ...... .... .. . 71
B lowe r ... .... .. .. ... ..... ... .. .. . 71
Defrosting windows ..... .... ... .. .. . 71
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 71
Rear window defogger .......... .. .. . 74
Recirculation mode ............ .... . 72
Clock . ... .. .... .. .. ... ..... ... .. .. . 10
Clos ing
Hood . .... .... .. ............. ....
216
Windows . .. .. .. .... ......... .... . 38
Closing/opening
by remote control . . . . . . . . . . . . . . . . . . 33
with the central locking switch ..... .. .
35
with the conven ience key . . . . . . . . . . . . . 34
with the door lock ........... .... .. . 35