2017 AUDI A3 SEDAN tire size

Intelligent Technology
- Press the accelerator pedal carefully when
acce le rating on even, slippery surfaces such
as ice and snow. The drive wheels can spin
even when these control systems are instal­
led and th is can affect driving stability and
increase the risk of a co llision . condition
. Different tire sizes can lead to a
reduction in engine power.
- You may hear noises when the systems de ­
scribed are working .
@ Tips
-The ABS and ASR only function correctly
when all four whee ls have a s imilar wear
Switching on/off
ESC turns on automatically when you start the engine .
Fig . 1 59 Upper ce nter console: ESC butto n
function of the ESC is limited or switched off . The
amount of stabilization contro l will differ de­
pending on the level.
The following examp les are unusua l situations
where it may make sense to switch sport mode
on in order to allow the wheels to sp in:
- Roc king the ve hicle to free it when it is stuck
- Dr iv ing in deep snow o r o n loose g round
- Dr iv ing with snow chains
The ESC is des igned to fu nction in levels. Depend­
i n g on the level tha t is sele cted , the stabilization
Sport mode on
Behavior
The ESC and ASR stabiliza-
tion f unctions are limited
¢ .&. .
Op eration Press the l.$ ,., I button brief-
Ly .
Ind icator II turns on.
lights
Me ssage s Stabilizati
on cont rol (ESC ):
s port . Warning! Re st ric ted
s tability
A WARNING
You should only switch sport mode on or
switch ESC/ ASR
off if your driving abilities
and road conditions permit.
152
ESC /ASR off Sport mode off or
ESC /ASRon
The stabiliza tion f unct ion is The f ull stabiliza tion f unc-
not availab le
¢ .&. . ESC and
tion of the ESC and ASR is
ASR are switched
off . avai lab le again .
Press and hold the
1 .$ .. , I but- Press the l.$ ,., I button again .
ton longer than three sec-
onds.
fl and 14il•U~ turn on. II turns off or II and
1 4il•U~ turn off.
Stabi lization control (ESC): S tabilization control
off. Warning! Re stricted (
ESC ): on
stability
-
- The stabi lization function is limited when
sport mode is switched on. The driving
wheels could spin and the vehicle could
swerve, especially on slick or slippery road
surfaces.

Bead separa tion
means a breakdown of the bond
between components in the bead.
Cord
means the strands forming the
plies in the tire .
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated size that has not been driven for
more than a couple of miles (kilo­
meters) at low speeds in the
three hour period before the tire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
c luding the maximum capac ity of
fuel, oi l, and coolant, a ir condi­
tioning and add itional weight of
optional equipment.
E xtra load tire
means a tire designed to operate
at higher loads and at h igher in ­
flation pressures than the corre­ sponding standard tire. Extra load
tires may be identified as
"X L",
:;:;: "xl", "E XTRA LOAD" , or "RF" on ...
~ the s idewal l. ... 0 N > a:,
Wheels
Gross Axle Weight Rating
( " GAWR")
means the load-carrying capacity
of a single axle system, measured
at the tire -ground interfaces.
Gross Vehicle Weight Rating
(" GVWR ")
means the max imum total loaded
weight of the vehicle.
Groove
means the space between two ad­
jacent tread ribs .
Load rating (code)
means the maxim um load that a
tire is rated to carry for a given in­
flat ion pressure . You may not f ind
this informat ion on all tires be ­
cause it is not required by law.
Maximum load rating
means the load rating for a tire at
the maximum permissible infla­
tion pressure for that tire .
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity we ight , and
(d) Production options we ight
33 1

CX> CX> ... N .... N ... 0 N > a:,
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim di amet er
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur­
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be­
tween the tread and bead.
Speed rating (letter code )
means the speed at wh ich a tire is
designed to be driven for extend­
ed periods of time . The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 329.
You may not find
this information on all tires be­
cause it is not required by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates the
Wheels
maximum permissible road
speeds
¢ A in Winter tires on
page 342.
T ire pressure mon itoring
system *
means a system that detects
when one or more of a vehicle's
tires are underinflated and illumi­
nates a low tire pressure warning
telltale.
T read
means that portion of a tire that
comes into contact with the road .
Tread separation
means pulling 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
¢ page 336, Treadwear indicator
for more information on measur­
ing tire wear .
Uniform Tire Quality Grading
is a tire information system devel­
oped by the United States Nation­
a l Highway Traffic Safety Admin­
istration (NHTSA) that is designed
to help buyers make relative
333
..

a, a, ..... N
" N ..... 0 N > 00
fo r t he numb er of seating p osi­
t io ns . R efe r to th e ta bl e
¢ ta ble
o n pag e 33 8 for th e number of
p eople th at co rrespo nd to th e ve­
hi cle n orm al l oa d.
New tires or wheels
Aud i recommends having all work on tires or
wheels performed by an authorized Audi dealer
or author ized Audi Se rvice Facility . These fac ili­
ties have the proper know ledge and are equipped
with the required too ls and replacement parts.
• New tires do not yet have the optimum grip­
ping properties. Drive caref ully and at moder ­
ate speeds for the first 350 mi les (500 km)
with new tires.
• Only use tires w it h the same design, size (roll­
i ng c ircumference) and as close to the same
tread patter n as poss ible on all four wheels .
• Do not replace t ires individua lly. At least re­
pla ce both t ires on the same axle at the same
t ime .
• Audi recommends that you use Aud i Original
Tires . If you wou ld like to use different tires,
please note that the tires may perform differ­
ently even if they are the same
si ze ¢ ,& .
• If you would like to equip your veh icle w ith a
tire/rim comb inat ion that is different from
what was installed at the factory, consult w ith
an aut horized Aud i dea ler o r authorized Audi
Se rvice Facility befo re making a
purchase ¢,& .
The spare tire* is different from the regular tires
insta lled on the veh icle
-for example, if w inter
tires or w ide tires a re ins talled
-so only use the
spa re ti re* tempo rar ily in case of emergen cy and
d rive caref ully wh ile i t is in use . It should be re ­
p laced w it h a regular t ire as soon as possib le.
Applies to: vehicles with all wheel drive: all four
wheels must be eq uipped w ith tires that are the
same brand and have the same construc tion and
tread pattern so that the drive system is not
damaged by different wheel speeds. For this rea­
son , in case of eme rgency, only use a spare tire*
Wheels
that is the same circ umfe rence as the regular
tires.
A WARNING
--On ly use t ire/rim comb inations and suitab le
wheel bo lts that have been approved by
Aud i. Otherwise, damage to the vehicle and
a n accident could res ult.
-For technical reasons, it is not possible to
use t ires from other ve hicles
-in some cas­
es, yo u cannot even use tires from the same
veh icle model.
-Make sure that the tires you select have
e nough clearance to the veh icle. Rep lace­
ment tires should not be chosen s imply
based on the nomina l size, because ti res
wit h a differe nt constru ction can diffe r
g reatly even if they are the same size . If
there is no t enough clearance, the tires or
the vehicle can be damage d and this can re­
duce dr iving safety and increase the risk of
an accident.
-On ly use t ires that are more than s ix years
old when absolutely necessa ry and drive
carefully when doing so.
- Do not use run -flat tires on your vehicle . Us­
ing them when not perm itted can lead to
veh icle damage or accidents.
- If you install wheel covers on the vehicle, make sure they allow enough air circulation
to cool the brake system. If they do not, t his
could increase the risk of an acc ident.
Tire wear/damage
F ig . 279 Tire pro file: treadwear indicato r
Tire we ar
Check the tires regu larly for wear.
335

Wheels
(D Tips
Audi recommends using the
tire pressure specified for a normal load
¢ table on
Tire pressure table
Please note that the information
contained in the following table
was correct at the time of print­
ing , and the information is sub­
ject to change. If there are differ­
ences between this information
and the tire pressures specified
on the label on the driver's side B­
pillar, always follow the specifica­
tion on the B-pillar label
¢ page 336~ f ig. 280.
Model/ Tire designation
Engine
page 338 or for a full load
when the vehicle is partially loaded .
Make sure that the tire designa­
tion on your tire matches the des­ ignation on the tire pressure label
and the tire pressure table.
The following table li sts recom­
mended tire pre ssur es in cold
tires according to the load and
the size of the tires in stalled.
Tire pressure
Normal load Maximum load
(up to 3
people)a l
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A3 sedan: 225/40 R18 92Y
35 240
32 220 36 250 36 250 2.0 L High Performance
4-cylinder 225/45 R17 91H
All Season
33 230 30 2 10 4 1 280 41 280
225/40 R18 92H
36 250
33 230 41 280 41
280 All Season
235 /35 R19 91 Y
33 230 30 210 38 260 280 High Performance
41
53 sedan: 225/40 R18 92Y
3 8 2 60 35 2 40 42 2 90 42 290 2.0L High Performance
4 cylinders 225/40 R18 92H
All Season
38 260 35 240 41
280 41
280
235/35 R19 91 Y
39 270 36 25 0 44
300 44 300 High Performance
338

CXl CXl .... N ,.__
N .... 0 N > 00
Check with an authorized Audi dealer or author ­
ized Audi Service Facility to see if you may use
snow chains .
Use
fine-mesh snow chains . They must not add
more than 0.53 inch (13 .5 mm) in height, includ­
ing the chain lock.
You must remove the snow chains on roads with­
out snow. Otherw ise, you could impair driving
ability and damage the tires.
~ WARNING
Using incorrect snow chains or installing snow
chains incorrectly can result in loss of vehicle
control, which increases the risk of an acc i­
dent.
0 Note
Snow chains can damage the rims/wheel cov­
ers * if the chains come into direct contact
w ith them. Remove the wheel covers * first.
Use coated snow chains.
(D Tips
When using snow cha ins, it may be useful to
sw itch on sport mode
¢page 152.
Low aspect ratio tires
Your Aud i is factory-equipped with low aspect ra­
tio tires. These t ires have been thoroughly tested
and been selected specifically for you r model for
their superb performance, road feel and handling
under a va riety of driving conditions. As k your au­
thorized Audi dealer for mo re de tails.
The low aspect ratio of these tires is indicated by
a numera l of
55 or less in the tire's size designa­
tion . The numeral represents the ratio of the
tire's sidewall height in relation to its tread width
expressed in percentage. Conventional tires have
a height/w idth rat io of 60 or more .
The performance of low-aspect-ratio tires is par­
ticularly sensitive to improper inflation pres­
sure. It is therefore important that low aspect
ratio tires are inflated to the specified pressure
and that the inflation pressure is regularly
checked and maintained. Tire pressures should
Wheels
be checked at least once a month and always
before a long trip
¢ page 336 .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more easi ­
ly by impact w ith potholes, curbs, gullies or
ridges on the road, particularly if the tire is un­
der inflated.
In order to minimize the occurrence o f impact
damage to the tires of your vehicle, we recom­
mend that you observe the following precau ­
t ions:
-Always maintain recommended inflation pres­
sures . Check your tire pressure every
2,000 miles (3,000 km) and add air if necessa­
ry.
-Drive carefully on roads with potholes, deep
gullies or ridges. The impact from driving
through or over such obstacles can damage
your tires. Impact with a curb may also cause damage to your tires.
-After any impact, immediate ly inspect your
tires or have them inspected by the nearest au­
thorized Audi dealer . Replace a damaged tire as
soon as possible .
-Inspect your tires every 2,000 m iles (3,000 km)
for damage and wear . Damage is not a lways
easy to see. Damage can lead to loss of air and
unde rinflation, w hich could even tually cause
t ire fa ilure.
If yo u bel ieve that a tire may have
been damaged, replace the tire as soon as pos­
sible.
-These tires may wear more quickly than others.
-Please also remember that, while these tires
deliver responsive handlin g, they may ride less
comfortably and make more noise than other
choices.
Reduced performance in winter/cold season
conditions
All tires are designed for certain purposes. The
low aspect ratio, ultra high performance tires
origina lly installed on your vehicle are intended
for maximum dry and wet road performance and
handling. They are not suitable for cold, snowy or
icy weather conditions. If you drive under those
c ir cumstances, you should equip your vehicle
..,.
343

Wheels
with all-season or winter tires, which offer better
traction under those cond itions. We suggest you
use the recommended snow or all-season tires
specified for your vehicle, or their equivalent.
Refer to
q page 342 for more detailed informa­
tion regarding winter tires.
Uniform tire quality grading
-Tread wear
- Traction AA A B C
- Temperature ABC
Quality grades can be found where applicable on
the tire side wall between tread shoulder and
maximum sect ion w idth
q page 328, fig. 278.
For example: Tread wear 200 , Traction AA, Tem­
perature
A .
All passenger car tires must conform to Federal
Safety Requirements in addition to these grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov­
ernment test course .
For examp le, a tire graded 150 would wear one
and one half
(1 1/2) times as well on the govern­
ment course as a tire graded 100.
The relative performance of tires depends upon
the actual conditions of their use, however, and
may depart significantly from the norm due to
variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
The traction grades, from highest to lowest, are
AA, A, Band
C. Those grades represent the tire 's
ability to stop on wet pavement as measured un­
der controlled conditions on specified govern­
ment test surfaces of asphalt and concrete . A tire
marked C may have poor traction performance
q .,&..
Temperature
The temperature grades are A (the highest), B,
and C, representing the tire's resistance to the
344
generation of heat and its ability to dissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate­
rial of the tire to degenerate and reduce tire life,
and excessive temperature can lead to sudden
tire
failure ¢.&. .
The grade C corresponds to a level of perform­
ance which all passenger car tires must meet un­
der the Federal Motor Vehicle Safety Standard
No. 109. Grades Band A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.
A WARNING
-
The tract ion grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor­
nering, hydroplaning or peak traction charac­
teristics.
A WARNING
The temperature grade for th is tire is estab­
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla­
tion, or excessive loading, either separately or
in combination, can cause heat bui ldup and
possible tire failure.
A WARNING
Temperature grades apply to tires that are properly inflated and not over or underinflat­
ed .
Tire pressure monitoring
system
(1) General notes
App lies to : vehicles with tire pressure mo nitori ng syste m
.
Each tire, including the spare (if provided),
should be checked monthly when cold and inflat­
ed to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your veh icle has
tires of a different size than the size ind icated on
the veh icle placard or tire inflat ion pressure
..,.