brakes AUDI RS5 CABRIOLET 2013 Owner's Manual

-Never mount used tires on yo ur vehicle if
yo u 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 of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age .
(D Note
Please note that summe r and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight means the comb ined weight (in excess of
those sta ndard items which may be rep laced)
of au toma tic transmission, power steer ing ,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip­
ment (whether installed or not) .
Aspect ratio
means the rat io o f the height to the w idth of
the tire in percent . Numbers of 55 or lower in ­
dicate a low sidewall for improved steering re­
sponse and better overa ll handling on dry
pavement .
Bead
means the part of the t ire t hat is made o f
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the r im.
Bead separation
means a b reakdown of the bond between
components in the bead .
Cord means the strands forming the plies in the
tire.
Tire s an d wheel s 223
typica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
dec rease the e lasticity of summer t ires,
which affects tract ion and brak ing ability.
If summer t ires are used i n very co ld tem ­
peratures, cracks ca n form o n the tread
bars , res ulting in perma nen t tire damage
that can cause loud driving noise and un­
bala nced ti re s. Audi i s not respon sible for
th is type of damage .
Cold tire inflation pressure
means the t ire p ress ure recommended by t he
vehicle manufacture r fo r a tire o f a des ignated
s ize t hat has not bee n driven for more than a
coup le o f miles (k ilometers) at low speeds in
the three hour period before the tire press ure
is m easured or adjusted.
Curb weight
me ans the we ight of a motor ve hicle with
st andard equipmen t incl ud ing the max imum
capacity of fuel, oi l, and coolant, air condi ­
tioning and additional weig ht of optiona l
equipment.
Extra load tire
means a t ire design to oper ate a t higher load s
and at higher inflation pressures than the cor­
responding standa rd tire . Extra load tires may
be identified as "XL", "x l", "EXTRA LOAD", o r
"RF" on the sidewal l.
Gross Axle Weight Rating ("GAWR")
me ans the load-ca rry ing capac ity of a single
axle system , measured at the tire -ground in­
te rfaces.
Gross Vehicle Weight Rating ( "GVWR ")
mea ns the maximum total loaded we ight of
the ve hicl e. .,..
•
•

224 Tires and wheels
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 given inflation pressure. You
may not find this informat ion on all tires be­
cause it is not req uired by law.
Maximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation 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 weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressure
to which a tire may be inflated. Also called
"maximum inflation pressure ."
Normal occupant weight
means 150 lbs. (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle .
Occupant distribution
means distribution of occupants in a vehicle.
Outer diameter
means the overa ll diameter of an inflated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ ­
ing elevations due to labeling, decorations, or
protective bands o r ribs .
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the combined weight of those insta lled
regular production options weighing over 5
lb s. (2 .3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory we ight, including
heavy duty brakes, ride levelers, heavy duty
battery, and special trim.
Radial ply tire
means a pneumat ic tire in which the ply cords
that extend to the beads are laid at substan­
t ia lly 90 degrees to the center line of the
tread .
Recommended inflation pressure
see<=> page 223, Cold tire inflation pressure.
Reinforced tire
means a t ire design to operate at higher loads
and at h igher inflation pressures than the cor­
responding standa rd tire. Reinforced tires
may be identified as "XL" "xl" "EXTRA LOAD"
' ' '
or "RF" on the sidewa ll.
Rim
means a metal support for a tire or a tire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal diameter of the bead seat. If
you change your wheel s ize, you will have to
purchase new tires to match the new rim di­
ameter.
Rim size designation
means r im diameter and width .
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a tire between the
t read and bead.

Tires an d wheel s 22 7
you have stored. The system does not recog ­
nize the load condition of your vehicle.
The effectiveness of the ti re pressu re monitor­
ing sys tem* will be impaired if you store nor ­
mal load pressures but then operate the vehi ­
cle at its maximum load¢,& .
See the illustration ¢
fig. 185 for the location
of the label on dr iver's side B-pillar (co lor of
the actual labe l and exact location on the ve­
hicle wi ll vary slig htly) .
Note that the fo llowing tab le is accurate a t
the t ime o f go ing to press and is subject to
Tire designation
change. In the event of discrepancies, the ti re
pressure label is located on the driver's side B­
pillar always takes precedence .
T he table below lists the recommended cold
ti re inflation pressures for the Audi mode l
covered by your Owner's Literat ure at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as orig inal
equipment, or as a factory option.
Tire pressure
Model
Engine normal load condition full load condition
(up to 2 occupants)
front rear front rear
PSI
kAA ~I kAA ~I kAA ~I kAA
RS 5 Cab- 265 /35 R19 98V X L
riol et: High Performan ce
39 270 35 240 44 300 41
280
4.2 liter 275 /30 R20 97V XL
a -cyl inder
270 35 240 44 300 4 1 280
XL= reinf orc ed or extra lo ad tire. It ma y al so appear a s xl , EXTRA LOAD, or RF on the tire side ­
w all .
Because tec hnical changes may be made to
ve hicl e equ ipment dur ing the model yea r, a l­
ways compare the tire s ize designation on the
tire pressure label on your vehicle w ith the
tires on your vehicle . Make s ure that the tire
size information on the vehicle label is the
same as the s ize of the t ires on the vehicle.
This is especially important if the vehicle be­
longs to someone else or you bought the veh i­
cle with different rims/tires or you bought the
veh icle as a previously owned vehicle.
Remember, your safety and that of your pas­
sengers also depends on mak ing sure that
load limits are not exceeded . Vehicle load in­
cludes everybody and everything in and on the
ve hicl e. These load limits are technically refer­
r ed to as the vehicle's G ross Vehicle We ight
Rating ("GVWR"). The Gross Ax le Weight Rat­
ing ("GAWR") is the maximum load that can
be applied at each of the vehicle's two axles .
The Gross Vehicle We ight Rating and the G
ross Ax le Weig ht Rating are listed on the
sa fe ty comp liance sticke r label lo cated on the
dr iver's side B-pillar . The tire pressu re labe l on
your A udi lists the maximum combined
weight of all of the occ upants and luggage o r
other cargo that the veh icle can carry. For the
location of the t ire pressure label ¢
fig. 185.
A WARNING
-Overloading a vehicle can cause loss of ve-
h icle contro l, a crash or other accide nt, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was des igned to carry will prevent the
veh icle from handling properly a nd in­
crease the risk of a loss of vehicle con­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
veh icle w ith in a safe distance.
•
•

230 Tire s and wheel s
@ For the sa ke of the environment
Underinflated tires will a lso increase the
fue l consumption.
Tires and vehicle load limits
There are limits to the amount of load or
weight that any vehicle and any t ire can carry.
A vehicle that is overloaded w ill not handle
well and is more difficult to stop. Overload ing
can not only lead to loss of vehicle control, but can also damage important pa rts of the
vehicle and can lead to s udden tire failure, in­
cluding a blowout and sudden deflation that
can cause the vehicle to crash.
Your safety and that of your passenge rs a lso
depends on making s ure that load limi ts are
not exceeded . Vehicle load includes everybody
and everything in and on the vehicle. These
load limits are technica lly referred to as the
vehicle's
Gross Veh icle We ight R ating
("GVWR").
The "GVWR" includes the weight of the basic
vehicle, all factory installed accessories, a full
tank of f uel, oi l, coo lant and other fluids pl us
maximum load. The maximum load includes
the number of passengers that the vehicle is intended to carry ("seating capacity") with an
assumed weight of 150 lbs . (68 kg) for each
passenger at a des ignated seat ing pos ition
and the tota l we ight of any l uggage in the ve­
h icle. If you tow a trailer, the weight o f the
trai ler hitch and the tong ue weight of the
loaded trailer must be included as part of the
vehicle load.
The
Gro ss Axl e W eight Rating ("GAWR") is
the maximum load that can be app lied at each
of the vehicle's two axles.
The G ross Vehicle Weight Rating and the
Gross Axle Weigh t Rating are listed on the
safety compliance sticker labe l located on the
driver's side B-pi llar . Audi has 4 seati ng posi­
tions, 2 in the front and 2 in the rear for tota l
seating capacity of 4 . Each seating position
has a seat belt¢
page 129, Safety belts.
T he fact that there is an upper limit to yo ur
vehicle's G ross Vehicle Weight Rating means
that the total weight of whatever is being car­ ried in the vehicle ( includ ing the weight of a
trailer hitch and the tongue weight of the
loaded tra iler) is lim ited . The more passen­
gers in the vehicle or passengers who are
heavier than the standard we ights assumed
mea n tha t less we ight can be carried as lug­
gage.
T he t ire pressure label on your Aud i also lists
the max imum combined weig ht of a ll of the
occupants and luggage or other cargo that
the vehi cle can carry . For the location of the
label¢
page 226, fig. 185.
.&, WARNING ~ -
Overloading a vehicle can cause loss of ve ­
h icle contro l, a crash or other accident, se­
rious personal injury, and even death.
- Ca rrying more weight than your vehicle
was des igned to carry wi ll prevent the
vehicle from handling properly and in­
crease the risk of the loss of vehicle con­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
veh icle w ith in a safe distance.
- Tires on a vehicle that has been overload­
ed can fail suddenly, including a blowout
and sudden deflation, causing loss of
control and a crash .
- Always make sure that the total load be­
ing transported -including the weight of
a trailer hitch and the tongue we ight of a
loaded trailer - does not ma ke the vehi­
cle heavier than the vehicle's G ross Vehi­
cle Weight Rating.
Determining correct load limit
U se th e exa mple b elow to ca l­
c ulat e th e total w eight of the

236 Tire s and whee ls
vehicle 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 vehicle
- for example with winter tires - only use
the replacement t ire for a short period of
t ime and dr ive with extra care . Refit the
normal road wheel as soon as safely pos­
sible.
- Never drive faste r than the maximum
speed for which the tires on your veh icle
are rated because ti res that are driven
faster than their rated speed can fail
sudden ly.
- Overloading t ires cause heat build-up,
sudden tire failure, including a blowo ut
and sudden deflation and loss of control.
- T emperature grades app ly to tires that
are properly inflated and not over or un­
derinflated.
- For technical reasons it is not a lways
possible to use wheels from othe r
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel trim discs on the ve­ hicle whee ls, make sure that the air f low
to the brakes is not blocked . Reduced air­
flow to the brakes can them to overheat, increasing stopping distances and caus­
ing a collision .
- Run flat tires may only be used on
vehicles that were equipped w ith them
at the factory . The vehicle must have a
chassis des igned for run flat t ires and a
factory-installed t ire pressure monitor­
ing system* that indicates a loss of ti re
pressure. Incorrec t use of run flat tires
can lead to vehicle damage or accidents .
Check with an authorized Audi dea ler or
tire spec ialist to see if your vehicle can be
equipped with run flat tires . If run flat
tires are used, they must be installed on
all four wheels. M ixing tire types is not
permitted .
(D Note
-For technica l reasons, it is not genera lly
possible to use the wheel r ims from oth- er vehicles.
This can hold true for wheels
of the same vehicle type.
- If a rep lacement tire is different from
the tires that you have mounted on your
vehicle (for example winter tires or wide profile tires), then use the rep lacement
tire for a short period of time only and dr ive with extra care. Replace the flat tire
w ith the tire match ing the others on your
vehicle as soon as possible.
- Never drive without the valve stem cap .
The valves could get damaged .
® For the sake of the environment
D ispose of o ld tires in accordance with the
local requirements .
Uniform tire quality grading
-Tread wear
- Traction AA A B C
- Tempe rature ABC
Quality grades can be found where applicab le
on the t ire s ide wall between tread shou ld er
and maximum section width c> page 233,
fig. 189 .
For exampl e: Tread wear 200 , Traction AA,
Temperature A.
All passenger car t ires must conform to Feder­
al Safety Requirements in addition to these
grades.
Tread wear
T he tread wear grade is a comparative rating
based on the wear rate of the t ire when tested
u nder controlled conditions on a specified
government test course .
For example, a tire graded 1S0 would wear
one and one ha lf (11/2) times as well on the
gover nment course as a t ire graded 100 .
The relative performance of tires depends upon the actual conditions of their use, how­
ever, and may depa rt s ignificantly from the
norm due to va ria tions in d riving hab its, serv­
ice practices and differences in road character-
istics and climate.
ll-

270 Index
Automatic climate control Air vents ... ............... .. .... .. 71
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 70
Setup . .. ............... .. .. .... .. 72
Automatic power top ....... .. .. .... .. 42
Automatic transmission . . . . . . . . . . . . . . . 85
Emergency release . . . . . . . . . . . . . . . . . . 91
Removal lock (ignition key) . .. .. .. .. . . 74
S tron ic .. .... ........... .. .. .... .. 85
also refer to S tron ic transmission ..... 85
Automatic wipers .............. .. .. .. 57
Auto Safety Hotline ................. 126
Average speed . . . . . . . . . . . . . . . . . . . . . . . 25
Avoid damaging the vehicle . . . . . . . . . . . 184
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 17,217
Battery location inside the luggage com-
partment .. ............... .. .... . 218
Charging . .. ..... ........... ... .. . 219
Important warnings when working on
the battery . .............. ... .. ... 218
Jump starting . ........... .... .... . 255
L ow . .. .. ............... .. .. .... . 182
Replacing the battery .............. 221
State of charge . . . . . . . . . . . . . . . . . . . . 182
Winter operation .......... ... .... . 217
Working on the battery .... .. .. .. .. . 218
Before driving ... .......... .. .. .. .. . 118
Belt positioner .. .... ...... .. .. .. .. . 132
Blended gasoline .................. . 202
Blower (automatic climate cont rol) . . . . . . 71
Body cavity sealing ......... .. .. .... . 196
Booster seats .............. ... .... . 166
Brake fluid Changing the brake fluid ....... .. .. . 217
Check ing the brake fluid level . .. .. .. . 216
Reservoir .. ............. .. .. .. .. . 216
What is the cor rect brake fluid level? .. 216
What should I do if the brake fluid warn-
ing light comes on? ........ ... .. .. . 216
Brake system .............. .. .. .... . 216
Anti-lock braking system . .. .. .. .... .. 19
Brake assist system ....... .. .. .. .. . 176
Brake fluid ............... ... .... . 216
Brake fluid specifications for refill and re­
placement . . . . . . . . . . . . . . . . . . . . . . . 217 Brake light defective .
. . . . . . . . . . . . . . . 21
Brake power assist unit .......... ... 178
Brakes ... ... .. .. .. .............. . 178
Ceramic brakes . .. ............. .... 178
Electromechanical parking brake . .... . 79
Warning/indicator lights ............. 15
Worn brake pads symbol . . . . . . . . . . . . . 20
Braking Emergency braking function ..... .. .. . 81
braking guard . .. . .. ............ .. .. . 92
Messages ..... .. .. .............. .. 99
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Break-in period .. .. ... .......... .. .. 184
Tires ... .. .. .. .. .. ... ........ .. .. 184
Bulbs ...... .. .. .. .. ........... .... 254 C
California Proposition 65 Warning ... .. 208
Battery specific . . . . . . . . . . . . . . . . . . . 219
Capacities . ..... .. .. .............. . 263
Car care ...... .. .. .. ...... ..... .. .. 189
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Plastic and vinyl .. ............. .... 194
Care of exterior .. .. ............. .... 189
Cargo area
refer to Luggage compartment... 67, 124
Catalytic converter . ............. .... 185
Center armrest . . . . . . . . . . . . . . . . . . . . . . 64
Central locking .... ................ .. 31
Central locking switch ............... 35
Convenience key .. ............. ..... 35
Remote contro l key . . . . . . . . . . . . . . . . . 34
Ceramic brake rotors New brake pads .. ................ . 178
Certification .. .. .. .......... ...... . 267
Changing a flat tire ................. . 245
Changi ng a wheel ... .............. .. 245
Changing engine oil ............... .. 213
Chassis Undercoating .... ................ . 196
Checking Engine coolant level .............. .. 214
Checking tire pressure ..... ...... .. .. 228