wheel size AUDI A5 2015 Owner´s Manual

Airbag syste m
also not inflate in s ide or rear collisions, or in roll ­
overs.
Al wa ys rem ember : Airbags will deploy on ly once,
and only in certain kinds of collis ions . Your safety
be lts are a lways there to offer p rotection in those
situations in which airbags are not supposed to
deploy, or when they have already deployed; for
examp le, when your vehicle s trikes or is struck by
ano ther a fter the firs t collision .
This is just one of the reasons why an airbag is a
supp lementary restra int and is not a substitute
for a safety belt. The airbag system works mos t
e ff ectively when used w it h the safety belts.
Therefore, always properly wear your safety belts
r=;, page 121 .
A WARNING
Sitting too close to the steering wheel or in­
strument panel wil l decrease the effect ive ­
ness of the airbags and will inc rease the risk
o f personal injury in a collision .
- Never sit closer than 10 inches (25 cm) to
the steering wheel or instrument panel.
- If you cannot sit more than 10 inches
( 2 5 cm) from the steer ing whee l, investi­
gate whether adaptive equipment may be
available to help you reach the pedals and
increase yo ur seating distance from the
steering wheel.
- If you are unrestrained, leani ng forward, s it­
ting sideways o r out of position in any way,
yo ur risk of in jury is much higher.
- You wi ll also receive serio us injuries and
could even be killed if you are up against the
airbag or too close to it when it inf lates -
even with an Advanced Airbag.
- To reduce the r isk of injury when an airbag
inflates, always wear safety belts properly
c> page 124, Safety belts .
- Always make certain that children age 12 or
younger always r ide in the rear seat. If chil­
dren are not properly restrained, they may
be severely injured or killed when an airbag
inflates .
- Never let children ride unrestrained or im ­
properly restrained in the vehicle. Adjust the
front seats properly.
130
-
- Never ride with the backrest reclined .
- Always sit as far as possible from the steer -
ing wheel or the instrument panel
c> page 113.
-Always sit upright with yo ur back against
the backrest of yo ur seat .
- Never p lace your feet on the instrumen t
panel or on the seat. Always keep both feet
on the floor in front of the seat to help pre­
vent serious injur ies to the legs and hips if
the airbag inflates.
- Never recline the front passenger 's seat to
transport objects. Items can also move into
the area of the side airbag o r the front air­
bag during braking or in a sudden maneu ­
ver . Objects n ear the airbags can become
projectiles and cause in ju ry when an airbag
inflates.
A WARNING
A irbags that have deployed i n a crash mus t be
replaced.
- Use o nly orig inal equ ipmen t airbags ap­
proved by Audi and installed by a trained
technician who has the necessary too ls and
diagnostic equipment to properly rep lace
any airbag in yo ur vehicle and assure system
effectiveness in a crash.
'
- Never permit salvaged or recycled airbags to
be installed in your vehicle .
Child restraints on the front seat - some
important things to know
""Be sure to read the importa nt information and
head the WARNINGS for importa nt details
about ch ild ren and Advanced Airbags
r=;, page 151 .
Even thoug h your veh icle is equipped w ith an Ad ­
vanced Airbag Sys tem, make ce rtain tha t all chil­
dren, especially those 12 years and younge r, a l­
ways ride in the ba ck seat p roperly res trained fo r
their age and size. The a irbag on the passenger
s ide makes the front seat a potent ially dangero us
place for a child to r id e. T he front seat is not the
safest p lace for a chi ld in a forward-fac ing chi ld ..,.

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Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat occu­
pants.
Fig . 132 Location of driver airbag: in steering wheel
Fig . 133 Location of front passenger's airbag: in the instru­
ment panel
Your vehicle is equipped with an "Advanced Air­
bag System" in compliance with United States
Federal Motor Vehicle Safety Standard
(FMVSS) 208 as applicable at the time your veh i­
cle was manufactured. The safety belts for the
seats have "pretensioners" that help to take slack
out of the belt system. The pretensioners are also
activated by the electronic control unit for the
airbag system .
The front safety belts also have load limiters to he lp reduce the forces applied to the body in a
crash.
The airbag for the driver is in the steer ing wheel
hub
c::> fig . 132 and the airbag for the front pas­
senger is in the instrument panel
~fig. 133. The
general location of the airbags is marked "AIR­
BAG".
Ai rb ag system
There is a lot you need to know about the airbags
in your vehicle. We urge you to read the detailed
information about airbags, safety belts and child
safety in this and the other chapters that make
up the owner's literature. Please be sure to heed
the WARNINGS -they are extremely important
for your safety and the safety of your passengers, especially infants and small children.
_&. WARNING
Neve r rely on airbags alone for protection.
- Even when they deploy, airbags provide only
supp lemental protection.
- Airbag work most effectively when used
with properly worn safety belts.
- Therefore, always wear your safety belts and
make sure that everybody in your vehicle is properly rest rained.
_&. WARNING
--A pe rson on the front passenger seat, espe­
cially infants and small ch ildren, will rece ive
se rious inj uries and can even be k illed by be­
i ng too close to the airbag when it inflates.
- Altho ugh the Advanced Airbag System in
your veh icle is designed to turn off the front
passenger airbag if an infant or a small child
is on the front passenger seat, nobody can
absolutely guarantee that deployment un­
der these special conditions is impossible in
all conceivable situations that may happen
during the useful life of your vehicle.
- The Advanced Airbag System can deploy in
accordance with the "low r isk" option under
the U.S. Federal Standard if a ch ild that is
heav ier than the typical one-year old child is
on the front passenger seat and the other
conditions for airbag deployment are met.
-Accident statistics have shown that children are generally safer in the rear seat area than
in the fron t seating position.
- For their own safety, all ch ildren, especially
12 years and yo unger, should a lways ride in
the back properly restrained for their age and size .
133

Child safety
exceptional circumstances and the PASSEN­
GER AIR BAG OFF
light does not come on
and stay on, immediately install the rear­
ward-facing child safety seat in a rear seat­
ing position and have the airbag system in­
spected immediately by your authorized
Audi dealer.
_& WARNING
If, in exceptional circumstances, you must in­
stall a forward-facing child restraint on the
front passenger's seat:
- Always make sure the forward-facing seat
has been designed and certified by its man­
ufacturer for use on a front seat with a pas­
senger front and side airbag.
- Always follow the manufacturer's instruc­
tions provided with the child safety seat or
carrier.
- Always move the passenger seat into its
rearmost position in the seat's fore and aft
adjustment range, as far away from the air­
bag as possible before installing the child
restraint. The backrest must be adjusted to
an upright position.
- Always make sure that the
PASSENGER AIR
BAG OFF
light comes on and stays on all the
time whenever the ignition is switched on.
(D Tips
Always replace child restraints that were in­
stalled in a vehicle during a crash. Damage to
a child restraint that is not visible could cause
it to fail in another collision situation.
Advanced front airbag system and children
Your vehicle is equipped with a front "Advanced
Airbag System" in compliance with United States
Federal Motor Vehicle Safety Standard (FMVSS)
208 as applicable at the time your vehicle was
manufactured.
The Advanced Airbag system in your vehicle has
been certified to meet the "low-risk" require­
ments for 3- and 6-year old children on the pas­
senger side and small adults on the driver side.
The low risk deployment criteria are intended to
152
reduce the risk of injury through interaction with
the airbag that can occur, for example, by being
too close to the steering wheel and instrument panel when the airbag inflates. In addition, the
system has been certified to comply with the
"suppression" requirements of the Safety Stand ­
ard, to turn off the front airbag for infants up to
12 months who are restrained on the front pas­
senger seat in child restraints that are listed in
the Standard.
Even though your vehicle is equipped with an Ad­
vanced Airbag system, all children, especially
those 12 years and younger, should always ride in
the back seat properly restrained for their age
and size. The airbag on the passenger side makes
the front seat a potentially dangerous place for a
child to ride. The front seat is not the safest place
for a child in a forward-facing child safety seat. It
can be a very dangerous place for an infant or a
larger child in a rearward-facing seat.
· Advanced Airbags and the weight-sensing
mat in the front seat
The Advanced Airbag System in your vehicle de­
tects the presence of an infant or child in a child
restraint on the front passenger seat using the
weight-sensing mat in the seat cushion and the sensor below the safety belt latch on the front
passenger seat that measures the tension on the
safety belt .
The weight-sensing mat measures total weight of
the child and the child safety seat and a child blanket on the front passenger seat. The weight
on the front passenger seat is related to the de­
sign of the child restraint and its "footprint", the
size and shape of the bottom of the child re ­
straint as it sits on the seat . The weight of a child
restraint and its "footprint" vary for different
kinds of child restraints and for the different
models of the same kind of child restraint offered
by child restraint manufacturers.
The weight ranges for the individual types, makes
and models of child restraints that the NHTSA
has specified in the Safety Standard together
with the weight ranges of typical infants and typ-
ical 1 year-old child have been stored in the .,..

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In extreme cases, EDL a utomatica lly switches off
to help keep the brake on the braked whee l from
overheating. EDL w ill switch on again automati ­
cally when conditions have returned to normal.
Steering re commendat ion
The ESC helps to stabilize the ve hicle by chang ing
the steering torque.
I n vehicles with dynamic steeri ng*, ESC also
h e lps to stabilize the steering in critical s itua­
tions .
Electronic interaxle differential lock* /
sel ectiv e wheel torque control*
The electron ic in teraxle d iffe ren tial lock (front
wheel drive) or the selective wheel torq ue contro l
(all wheel drive) operates when driving through
curves. The front whee l on the ins ide of the cu rve
or both whee ls on the inside of the curve are
braked selectively as needed. Thi s allows more
precise driving in curves. The applicable system
may not activate when driving in wet or snowy
conditions .
_&, WARNING
- The ESC and its integrated systems cannot
overcome the laws of physics. This is espe­
ci al ly impo rtant on slippe ry or wet roads. If
the sys tems begin acting to stabilize your
Switching on/off
Smart Technology
veh icle, you shou ld immediately change
your speed to matc h the road and traffic
conditions. Do not let the increased safety
provided by these systems tempt you to
take risks . Do ing so will increase the risk of a
loss of vehicle control, collision and serious
personal injuries.
- Always adapt your speed to road, traffic and
weather conditions. The risk of losing con­
trol of the vehicle inc reases when dr iving
too fast, espec ially through curves and on
slippery or wet roads, and when dr iving too
close to vehicles up ahead . The ESC and its
integrated systems cannot a lways prevent
coll isions -there is sti ll a risk of accidents!
- Always accelerate with special care on even,
smooth su rfaces such as those that are wet
or covered with ice and snow. The drive
wheels can spin even with these assistance
systems that can not always help to reduce
the risk of loss of vehicle cont rol.
{!) Tips
-ABS and ASR only work correct ly when a ll
four wheels are equipped w ith ident ica l
tires. Different tire sizes can lead to a reduc­
tion in engine power.
- You may hear noises when the systems de­
scribed are working.
ESC turns on automatically when you start the engine.
Fig. 153 Version A: lowe r ce nter console,~ OFF button
The ESC is designed to function in levels. Depend­
i ng on the level that is selected, the stabilization
function o f the ESC is limited or switched off . The
F ig. 154 Versio n B: uppe r ce nter console,~ OFF button
amount of s tabilization control will differ de­
pend ing on the level.
a, N N N ,.: CX) m
171

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The all-wheel drive concept is designed for high
engine power . Your vehicle is exceptionally pow­
erful and has excellent driving character istics
both under normal driving conditions and on
snow and ice. Always read and follow safety pre­
cautions <=>
,&.
Winter tire s
When driving in the winter, your vehicle with all­
wheel drive has an advantage, even with regular
tires. In winter road conditions it may be advisa­
ble to mount w inter tires (or all-season tires) for
improved driveability and braking: these tires
must be mounted on
all four wheels. See also
<=> page 220, Winter tires.
Tire chains
Where tire chains are mandatory on certain
roads, this normally also applies to vehicles with
all-wheel drive <=>
page 220, Snow chains.
Replacing wheels/tires
Vehicles with all-wheel drive must a lways have
tires of the same size. Also avoid tires with differ­
ent tread depths. For details see page
<=>
page 212, New tires or wheels.
Off-Road driving?
Your Audi does not have enough ground clear­
ance to be used as an off-road vehicle. It is there­
fore best to avoid rough tracks and uneven ter­
rain as much as possible. Also refer to
<=>page 177.
A WARNING
Always adjust your driving to road and traffic
conditions. Do not let the extra safety afford­
ed by all-wheel drive tempt you into taking
extra risks.
- Although the all-wheel dr ive is very effec­
t ive, always remember that braking capacity
is limited by tire traction. You should there­
fore not drive at excessive speeds on icy or
slippery road surfaces.
- On wet road surfaces, be careful not to dr ive
too fast because the front wheels could be ­
gin to slide on top of the water (aquap lan­
ing). If this shou ld occur, you will have no
Smart Technology
warning from a sudden increase in engine
speed as with a front-wheel drive vehicle.
Always drive at speeds which are suited to the road conditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa­
bility of electrical energy for starting the engine.
If a vehicle with a conventional energy system is
not driven for a long pe riod of time, the battery
is discharged by idling current consumers (e.g.
i mmobil izer). In certain circumstances it can re­
su lt in there being insufficient energy available to
start the engine.
Intelligent energy management in your vehicle
hand les the distribution of electrical energy.
Starting ability is markedly improved and the life
of the battery is extended.
Basically, energy management consists of
bat­
tery diagnosis , idling current management
and
dynamic energy management.
Battery diagnosis
Battery diagnosis continuously determines the
state of the battery . Sensors determine battery
vo lta ge, battery current and battery tempera­
tu re. This determines the current state of charge
and the power of the battery.
Idling current management
Idling current management reduces energy con­
sumption whi le the vehicle is standing. With the
ignition switched off, it contro ls the energy sup­
ply to the various electrical components. Data
from battery diagnosis is considered.
Depending on the battery's state of charge, indi­
vidual consumers are gradually turned off to pre­
vent excessive discharge of the battery and thus
maintain starting capability .
Dynamic energy management
While the vehicle is being driven, dynamic energy
management distr ibutes the energy generated ..,.
175

Wheels
(D Tires for passenger vehicles
(if applicable)
P indicates a tire for a passenger
vehicle. T indicates a tire desig­
nated for temporary use .
@ Nominal width
Nominal width of the tire be­
tween the sidewalls in millime­
ters . In general: the larger the
number, the wider the tire.
@ Aspect ratio
Height/width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Size of the rim diameter in inches .
@ Load index and speed rating
The load index indicates the tire's
load-carrying capacity.
The speed rating indicates the
maximum permitted speed
¢ & in
W inter tires on page 220 .
"EXTRA LOAD", "xl" or "RF" indi­
cates that the tire is reinforced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
up to 93 mph (150 km/h)
Q up to 99 mph (160 km/h)
206
Speed rat- Maximum permitted speed
Ing
R up to 106 mph (170 km/h)
s up to 110 mph (180 km/h)
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)a>
z above 149 mph (240 km/h)a)
w up to 168 mph (270 km/h)a)
y up to 186 mph (300 km/h)a)
a) For tires above 149 mph (240 km/h),
tire manufacturers sometimes use the
code "ZR".
(J) US DOT number (TIN) and
manufacture date
The manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire) :
DOT ... 4514 ...
means , for example, that the tire
was produced in the 45th week of
the year 2014.
@ Audi Original equipment
tires
Audi Original equipment tires
with the designation "AO" or "RO"
have been specially matched to
your Audi. When used correctly,
these tires meet the highest standards of safety and handling.
Your authorized Audi dealer will
be happy to provide more infor­
mation.

Wheels
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the rim .
Bead separation
means a breakdown of the bond
between components in the bead.
Cord
means the strands form ing 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 coup le of miles (kilo­
meters) at low speeds in the three
hour period before the tire pres­
sure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
fuel, oi l, and coolant , air condi ­
tioning and additional weight of optional equipment.
E x tra load tire
means a tire des igned to operate
at higher loads and at higher in-
208
flation pressures than the corre­
sponding standard tire . Extra load
tires may be identified as "XL",
"xl", "EXTRA LOAD", or "RF" on
the sidewall.
G ross A xle 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 max imum load that a
tire is rated to carry for a given in­
flation pressure . You may not find
this information on all tires be­ cause it is not required by law.
Ma ximum load rating
means the load rating for a tire at
the maximum permissible infla­
tion pressure for that tire .
Maximum loaded vehicle
w eight
means the sum of: ...

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
on the sidewal l.
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated .
Rim diameter
means nominal diameter of the
bead seat. If you change yo ur
wheel size , you w ill have to pur­
chase new tires to match the new rim diameter .
Rim size designation
means rim diameter and width.
Rim width
means nomina l distance between
rim flanges .
Sidewall
means that port ion o f a t ire be­
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend ­
ed periods of t ime. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 206 .
You may not find
this information on all tires be­
cause it is not required by la w.
2 10
The speed rating letter code ,
where applicable , is mo lded on
the tire sidewall and indicates the maximum permiss ible road
speeds
¢ .&. in Winter tires on
page 220.
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a ve hic le's
tires are under inflated and illumi ­
na tes a low tire p ressu re warning
tellta le .
Tread
means that portion of a tire that
comes into contact w ith the road.
Tread separation
means pu lling away of the tread
from the t ire carcass.
Treadwear indicators (TWI)
means the projections wi thin the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread . See
¢ page 214 , Treadwear indicator
for mo re information on measur­
ing t ire wear.

Wheels
Occupant loading and distri­
bution for veh icle normal load
for various designated seat ing
capacit ies
Refer to the tire inflation pressure
label
c:> page 215, fig . 171 for
the number of seating positions .
Refer to the table
c:> page 216 for
the number of people that corre­
spond to the vehicle normal load .
New tires or wheels
Audi recommends having all work
on tires or wheels performed by
an authorized Audi dealer or au­
thorized repair facility. These fa­
cilities have the proper knowledge
and are equipped with the re­
quired tools and replacement
parts .
.,.N ew tires do no t yet have the
optimum adhesion properties.
D rive carefu lly and at moderate
speeds fo r the first 350 miles
(500 km) with new tires.
.,. Use tires of the same construc­
tion, size (rolling circumference)
and as close to the same tread
pattern as possib le on all four
wheels.
.,. Do not replace tires individually.
At least replace both tires on the same axle at the same time .
212
.,.A udi recommends that yo u use
Aud i O rig ina l equipment tires . If
you would like to use different t ir es, please note that the ti res
may pe rform differently even if
they are the same size
c:> A -
.,. If you would li ke to equ ip your
vehicle with a tire/rim combina ­
t ion tha t is different from what
was installed at the facto ry, con­
sult with an authorized Audi
dea ler or authorized repair facili­
ty before making a purchase
¢ ,&. .
The spare tire* is different from
the regular tires installed on the
vehic le - for examp le, if winter
tires or wide t ires are insta lled -
then only use the spare tire* tem­
porarily in case of eme rgency and
drive carefully wh ile it is in use. It
s h o ul d be rep laced wi th a regular
tire as soon as poss ib le .
On
all wheel drive vehic les, all
four wheels must be equipped
with tires that are the same brand
and have the same construction
and tread pattern so that the
dr ive system is not damaged by
diffe rent tire speeds. For this rea­
son, in case of emergency, only
use a spa re tire* that is the same
circumference as the regular tires . .,.

_& WARNING -
-Only use tire/rim combina­tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident
could result.
- For technical reasons, it is not
possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from
the same vehicle model.
- Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen simply based on the nominal
size, because tires with a dif­
ferent construction can differ
greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more
than 6 years old when abso­
lutely necessary and drive
carefully when doing so.
-If you install wheel covers on
the vehicle, make sure they al­ low enough air circulation to
Wheels
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 169 Tire profile: Treadwear indica­
tor
Tire wear
Check the tires regularly for wear.
- Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves,
rapid acceleration and heavy
braking increase tire wear.
- Have an authorized Audi dealer
or authorized repair facility
check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear more quickly.
213
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