wheel size AUDI RS5 CABRIOLET 2015 Owners Manual

-If you must install a rearward facing
child safety seat on the front passenger
seat in exceptional circumstances and
the
PASSENGER AIR BAG OFF light does
not come on and stay on, immediately
install the rearward-facing child safety
seat in a rear seating position and have
the airbag system inspected immediately by your authorized Audi dealer.
,& WARNING
If, in exceptional circumstances, you must
install 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 manufacturer for use on a front seat
with a passenger front and side airbag.
- Always follow the manufacturer's in­
structions 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 airbag 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.
@ Tips
Always replace child restraints that were
installed in a vehicle during a crash. Dam­
age 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 "Ad­
vanced Airbag System" in compliance with
M N United States Federal Motor Vehicle Safety er
~ Standard (FMVSS) 208 as applicable at the ,....,
~ time your vehicle was manufactured .
,....,
"' ,....,
Child Safety 153
The Advanced Airbag system in your vehicle
has been certified to meet the "low-risk" re­
quirements for 3- and 6-year old children on
the passenger side and small adults on the driver side. The low risk deployment criteria
are intended to 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 "sup­
pression" requirements of the Safety Stand­
ard, to turn off the front airbag for infants up
to 12 months who are restrained on the front passenger seat in child restraints that are list­
ed in the Standard.
Even though your vehicle is equipped with an
Advanced Airbag system, all children, espe­
cially those 12 years and younger, should al­
ways ride in the back seat properly restrained
for their age and size . The airbag on the pas ­
senger 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 for­
ward-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
detects the presence of an infant or child in a
child restraint on the front passenger seat us­
ing the weight-sensing mat in the seat cush­
ion 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 design of the child restraint
and its "footprint", the size and shape of the
bottom of the child restraint as it sits on the
seat. The weight of a child restraint and its "footprint" vary for different kinds of child re -
straints and for the different models of the ..,. •
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172 Intelligent technology
distance detected to the vehicle ahead is too
smal l.
Anti-slip regulation (ASR )
ASR reduces eng ine power when the drive
wheels begin to spin and adapts the fo rce to
the road condit ions. This makes it eas ier to
start, accelerate and drive up hills .
Electronic differential lock (EDL )
The EDL brakes wheels that are spinn ing and
transfers the d rive powe r to the other wheels.
This f unct ion is available up to abo ut 60 mph
(100 km/h) .
In extreme cases, ED L automat ica lly switches
off to help keep the brake on the braked whee l
from ove rheating. EDL wi ll switch on aga in a u­
tomatically when conditions have returned to
norma l.
Steering recommendation
The ESC helps to stabilize the ve hicle by
changing the steering to rque.
In vehicles with dynam ic steeri ng*, ESC also
helps to stabilize the stee ring in critical s itua­
tions.
Select ive wheel torque control
Selective whee l torque control is used when
driving on curves . The front wheel on the in­
side of the curve or both wheels on the inside
of the curve are braked selective ly as needed.
This a llows mo re prec ise d riving in curves. The
appl icable system may no t activate when d riv­
i ng in wet or snowy condi tions.
A WARNING
- The ESC and its integrated systems can ­
not overcome the laws of physics. This is especia
lly important on slippery o r wet
roads. If the systems begin acting to sta­
bilize your veh icle, you should immedi­
ately change your speed to match the
road and traffic cond itions. Do not let
the increased safety provided by these
systems tempt you to take risks. Do ing
so will in crease the r is k of a loss of vehi­
cle control, collision and serious person al
in juries.
- Always adap t your speed to road, traffi c
and weather conditions . The risk of los ­
ing control of the vehicle increases when
driving too fast, especially through
curves and on slippery or wet roads, and
when dr iv ing too close to vehicles up
ahead. The ESC and its integrated sys­
tems cannot a lways p revent collisions -
there is still a risk of acc idents!
- Always accelerate with special care on
even, smooth s urfaces such as those that
are wet or covered with ice and snow.
T he drive w heels can spin even w ith
these assistance sys tems that cannot al­
ways he lp to re duce the risk of loss of ve ­
h icle control.
(D Tips
- ABS and ASR o nly wo rk correctly when
a ll four wheels are equipped wi th iden ti­
c al tires. D ifferen t tire sizes can lead to a
reduction in engine powe r.
- Yo u may hear noises when the systems
descr ibed are workin g.
-If the ind icator light DJ or Ea (USA
mode ls)/ lCOj t here may be a malfunction
~ page 18,
<=>page 19.

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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 forming the
plies in the tire .
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manu­
facturer for a tire of a designat­
ed size that has not been driven
for more than a couple of miles (kilometers) at low speeds in
the three hour period before
the tire pressure is measured or
adjusted.
Curb weight
means the weight of a motor
vehicle with standard equip­
ment including the maximum
capacity of fuel, oil, and cool­
ant, air conditioning and addi­
tional weight of optional equip­
ment.
Tires and wheels 213
Extra load tire
means a tire design to operate
at higher loads and at higher inflation pressures than the
corresponding standard tire. Extra load tires may be identi­
fied as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capaci­
ty of a single axle system,
measured at the tire-ground in­
terfaces.
Gross Vehicle Weight Rating ("GVWR")
means the maximum total
loaded weight of the vehicle.
Groove
means the space between two
adjacent tread ribs.
Load rating (code)
means the maximum load that
a tire is rated to carry for a giv­
en inflation pressure. You may
not find this information on all
tires because it is not required by law.
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Reinforced tire
means a tire design to operate
at higher loads and at higher
inflation pressures than the
corresponding standard tire. Reinforced tires may be identi­
fied as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
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 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 be­
tween rim flanges.
Sidewall
means that portion of a tire be­
tween the tread and bead.
Tires and wheels 215
Speed rating (letter code)
means the speed at which a tire
is designed to be driven for ex­
tended periods of time. The rat­
ings range from 93 mph
(150 km/h) to 186 mph
(298 km/h)¢
page 232. You
may not find this information
on all tires because it is not re­
quired by law.
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates
the maximum permissible road speeds
¢ .& in Winter tires on
page 237.
Tire pressure monitoring
system*
means a system that detects
when one or more of a vehicle's
tires are underinflated and illu­ minates a low tire pressure
warning telltale.
Tread
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.
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If you wish to improve comfort
when operating the vehicle at
normal load (up to 2 occu­
pants), you can adjust tire
pressures to those specified
for normal vehicle load. Before
operating the vehicle at maxi­ mum load, you must increase
the tire pressures to those
specified for maximum vehicle
load
c> .&. .
Bear in mind that the tire pres­
sure monitoring system* can
only monitor the tire pressures
you have stored. The system does not recognize the load
condition of your vehicle.
The effectiveness of the tire p ressure monitoring system*
will be impaired if you store normal load pressures but then
operate the vehicle at its maxi­
mum load
c> .&. .
Model Tire designation
Engine
RS 5 Cabriolet: 265/35 Rl9 98V XL
4.2
liter High Performance
a-cylinder
275/30 R20 97V XL
High Performance
Tires and wheels 219
See the illustration c> fig. 182
for the location of the label on driver's side B-pillar (color of
the actual label and exact loca­
tion on the vehicle will vary slightly).
Note that the following table is
accurate at the time of going to
press and is subject to change.
In the event of discrepancies,
the tire pressure label is locat­ ed on the driver's side B-pillar
always takes precedence.
The table below lists the rec­ ommended cold tire inflation pressures for the Audi model
covered by your Owner's Litera­
ture at the vehicle's capacity
weight and the tire sizes instal­
led on the respective models as
original equipment , or as a fac­
tory option.
Tire pressure
normal load condition full load condition (up to 2 occupants)
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
41 280 38 2 60 45 310 44 300
41 280
38 2
60 4 5 310 44 30 0
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XL= reinforced or extra load tire. It may also appear as xi, EXTRA LOAD, or RF on the tire side-
wall.

220 Tires and wheels
Because technical changes may
be made to vehicle equipment
during the model year, always
compare the tire size designa­
tion on the tire pressure label
on your vehicle with the tires on
your vehicle. Make sure that the
tire size information on the ve­ hicle label is the same as the
size of the tires on the vehicle.
This is especially important if
the vehicle belongs to someone else or you bought the vehicle
with different rims/tires or you
bought the vehicle as a previ­
ously owned vehicle.
Remember, your safety and
that of your passengers also de­ pends on making sure that load
limits are not exceeded . Vehicle
load includes everybody and ev­
erything in and on the vehicle.
These load limits are technical­
ly referred to as the vehicle's
Gross Vehicle Weight Rating
("GVWR"). The Gross Axle
Weight Rating ("GAWR") is the
maximum load that can be ap­
plied at each of the vehicle's
two axles . The Gross Vehicle
Weight Rating and the Gross
Axle Weight Rating are listed on the safety compliance stick- er label located on the driver's
side B-pillar.
The tire pressure
label on your Audi lists the
maximum combined weight of
all of the occupants and lug­
gage or other cargo that the ve­
hicle can carry. For the location
of the tire pressure label
¢fig. 182.
&_ WARNING
-
Overloading a vehicle can
cause loss of vehicle control,
a crash or other accident, se­ rious personal injury, and
even death .
-Carrying more weight than
your vehicle was designed to carry will prevent the ve­
hicle from handling properly
and increase the risk of a
loss of vehicle control.
-The brakes on a vehicle that has been overloaded may
not be able to stop the vehi­
cle within a safe distance.
-Tires on a vehicle that has
been overloaded can fail
suddenly causing loss of
control and a crash.
-Always make sure that the
total load being transported
- including the weight of a

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wear on steering, suspension and tires. A wheel must also be
rebalanced when a new tire is
installed.
Incorrect wheel alignment
Incorrect wheel alignment can
cause excessive tire wear, im­
pairing the safety of the vehi­
cle. If tires show excessive
wear, have the wheel alignment checked by an authorized Audi
dealer or qualified workshop.
All wheel drive
Vehicles with quattro must al­
ways have tires of the same
size, construction and tread
type. For details see
¢page 176.
A WARNING
Sudden tire failure can lead
to loss of control, a crash and serious personal injury!
-Never drive a vehicle when the tread on any tire is worn down to the wear indica­
tors.
-Worn tires are a safety haz­
ard, they do not grip well on
wet roads and increase your risk of "hydroplaning" and
loss of control.
Tires and wheels 229
-Always keep chemicals that can cause tire damage, such
as grease, oil, gasoline and
brake fluid away from tires.
-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 damaged even though
the damage cannot be seen
that can lead to sudden tire
failure and loss of vehicle
control.
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234 Tires and wheels
Maximum Permissible
Inflation Pressure
This number is the greatest
amount of air pressure that
should ever be put in the tire
under normal driving condi­
tions.
.&_ WARNING
-Using incorrect or unmatch­ ed tires and/ or wheels or improper tire and wheel
combinations can lead to loss of control, collision and
serious personal injury.
-Always use tires, rims and wheel bolts that meet the
specifications of original
factory-installed tires or
other combinations that have been specifically ap­
proved by the vehicle manu­
facturer.
-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 damaged even though
the damage cannot be seen
that can lead to sudden tire
failure and loss of vehicle
control.
-All four wheels must be fit­ ted with radial tires of the
same type, size (rolling cir­
cumference) and the same
tread pattern. Driving with different tires reduces vehi­
cle handling and can lead to
a loss of control.
-If the replacement tire is
not the same as the tires
that are mounted on the ve­
hicle -for example with win­
ter tires - only use the re­
placement tire for a short
period of time and drive
with extra care. Refit the normal road wheel as soon
as safely possible.
-Never drive faster than the maximum speed for which
the tires on your vehicle are
rated because tires that are
driven faster than their rat-
ed speed can fail suddenly. ...

236 Tires and wheels
@ For the sake of the environment
Dispose of old tires in accord­
ance with the local require­
ment s.
Uniform tire quality grading
- Tread wear
- T raction
AA A B C
- T emperature ABC
Quality grades can be found where applicable
on the tire side wall between tread shou lder
and max imum sect ion width
¢ page 230,
fig. 186.
For example: Tread wear 200, Tract ion AA ,
Temperature A.
All passenger car tires must conform to Feder­
al 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
government test course .
For example, a tire graded 150 would wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100.
The relat ive performance of t ires depends
upon the actua l conditions of their use, how­
ever, and may depart significantly from the norm due to var iations in dr iving habits, serv­
ice practices and differences in road character­
istics and climate .
Traction
The traction grades, from highest to lowest,
are AA, A, Band
C. Those grades represent the
tire's abil ity to stop on wet pavement as
measured under controlled cond itions on
specified government test surfaces of asphalt
and concrete . A tire marked C may have poor
traction performance ¢&,. .
Temperature
The temperature grades are A (the highest),
B, and C, representing the tire's resistance to
the generation of heat and its ability to dissi­
pate heat when tested under controlled condi­
tions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the
material of the tire to degenerate and red uce
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
under the Federal Motor Vehicle Safety Stand­
ard No. 109. Grades Band A represent higher
levels of performance on the laboratory test
wheel than the minimum required by law .
A WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning or peak traction
characteristics.
A WARNING
The temperature grade for this tire is es ­
tablished for a tire 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 failure.
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 winter or "snow" tires, those
with very deeply cut tread . These tires should
only be used in pairs and be installed on all
four wheels. Make sure you purchase snow
tires that are the same size and construction
type as the other tires on your vehicle. .,.

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Your vehicle is equipped with all whee l drive,
this will improve traction during winter driv­ ing, even with the standard tires. However, we
strongly recommend that you a lways equip a ll
four wheels on your veh icle w ith correctly fit­
ted wi nte r tires or all -season tires, when w in ­
ter road conditions are expected. This also im­
p roves the vehicle 's braking performance and
reduces stopping distances.
Summer tires provide less grip on ice and
snow .
W inter tire s (snow t ires) must always be fitted
on all four wheels.
Ask your authorized Audi dea ler o r qualified
workshop for permitted
w inter t ire sizes. Use
only radia l winter tires .
Winte r ti res lose thei r effectiveness when the
tread is worn down to a depth of
0 .15 7 inch
(4 mm) .
On ly drive with winter tires under winter con­
d itions. Summer tires hand le better when
there is no snow or ice on the roads and the
temperature is above
45 °F (7 °().
If yo u have a flat tire, see notes on repla ce ­
ment whee l¢ page 230 .
Pl ease always remembe r th at w inte r ti res may
have a lower speed rating tha n the t ires origi­
n all y ins talled on your veh icle at the t ime i t
was manufactured . Please see ¢ page 232,
Speed rating (letter code) for a Listing of the
speed rat ing letter codes and the maximum
speed at wh ich the t ires can be driven .
The speed rating letter code( ¢ page
215) is
on the side wall of the tire ¢ page 230.
A WARNING
Winter tires have maximum speed limits
that may be lower than your vehicle's max­
imum speed. Always know the maximum
speed befo re driving off . Never drive faster
than the speed permitted for your specific
w inte r tir es . This will cause damage to the
ti res leading to an ac cident and se rious
pe rsonal i njury to you and yo ur p assen­
gers .
Tire s an d wheel s 237
A WARNING
Driving faster than the maximum speed
for which the winter tires on your ve hicle
were designed can cause t ire fail ure in­
cluding a blowout and sudden deflation,
l oss of cont ro l, crashes and ser ious per­
sona l injuries. Have wo rn or damaged ti res
replaced immedia tely.
- Wi nte r tires h ave maxim um speed ra ting
that may be lower than yo ur vehicle 's
maxim um speed.
- Never d rive fas ter than the speed for
whi ch the w inter or othe r ti res installed
on yo ur vehicle are rated.
A WARNING
=
A lways ad just yo ur driving to t he roa d and
traffic conditions. Never let the good ac­
celeration o f the winter tires and a ll 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
veh icle.
- Drive carefully and reduce your speed on
icy and slippery roads, even w inter t ires
cannot help under black ice conditions.
@ For the sake of the environment
Use summer tires when weather condi­
tions permit. They are qu ieter, do not wear
as quickly and reduce fuel consumpt ion.
Snow chains
-
Snow cha ins may be fitted only to the fro nt
whee ls, and on ly to certain tire sizes . Ask your
autho rized Aud i dea le r o n whi ch tire sizes
snow chains can be used.
The snow chains must have low-p rofile links
and must not be th icker than
0 .41 inch
(10 .5 mm) , in cl ud ing t he lo ck.
Remove wheel center covers and trim discs
before putt ing snow cha ins on your veh icle
¢ 0 . For safety reasons cover caps must then ..,.
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