brakes AUDI RS7 SPORTBACK 2015 Owner's Manual

228 Tires and wheels
-If you notice unusual vibra­
tion or if the vehicle pulls to
one side when driving, al­
ways stop as soon as it is
safe to do so and check the
wheels and tires for dam­
age.
0 Note
-Please note that summer and winter tires are de­
signed for the conditions
that are typical in those sea­
sons. Audi recommends us­
ing winter tires during the
winter months. Low tem­ peratures significantly de­
crease the elasticity of
summer tires, which affects
traction and braking ability. If summer tires are used
in
very cold temperatures, cracks can form on the tread
bars, resulting in perma­
nent tire damage that can
cause loud driving noise and
unbalanced tires. Audi is not
responsible for this type of
damage.
-Burnished, polished or chromed rims must not be used in winter road condi­
tions. The surface of the
rims does not have suffi­
cient corrosion protection
for this and could be perma­
nently damaged by road salt
or similar substances.
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power
steering, power brakes, power
windows, power seats , radio,
and heater, to the extent that
these items are available as fac­
tory-installed equipment (whether installed or not).
Aspect ratio
means the ratio of the height to
the width of the tire in percent.
Numbers of 55 or lower indi­
cate a low sidewall for im­
proved steering response and
better overall handling on dry
pavement.
...

230 Tires a nd whee ls
Ma ximum load rating
means the load rating for a tire
at the maximum permissible in­
flation pressure for that tire.
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a tire
may be inflated. Also called
"maximum inflation pressure."
Normal occupant weight
means 150 lbs. (68 k ilograms)
times the number of occupants seated in the vehicle up to the
total seat ing capac ity of your
vehicle.
Occupant distribution
means distribution of occu ­
pants in a vehicle .
Outer diameter
means the overall diameter of
an inflated new tire.
Overall width
means the linear distance be­
tween the ex teriors of the side­
walls of an inflated tire, includ ­
ing elevations due to labeling,
decorations, or protect ive
bands or ribs .
Ply
means a layer of rubber -coated
parallel cords .
Production options weight
means the comb ined we ight of
those installed regular produc­
tion op tions weighing over 5
lbs . (2. 3 kg) in excess of those
standard items which they re ­
place, no t prev iously consid­
ered in curb weight or accessory
weight , incl uding heavy duty
brakes, ride leve lers, roof rac k,
heavy duty bat tery, and spec ial
trim.
Radial ply tire
means a pneumatic tire in
wh ich the p ly c ords that extend
t o the beads are laid at sub ­
stantially 90 degrees to the
centerline of the t read .

236 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. 195.
&_ 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
does not make the vehicle .,.

242 Tires and wheels
and increase the risk of the
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, including a blow­
out and sudden deflation,
causing loss of control and a
crash.
-Always make sure that the total load being transported
does not make the vehicle
heavier than the vehicle's
Gross Vehicle Weight Rat­
ing.
Determining correct load
limit
Use the example below to cal­
culate the total weight of the
passengers and luggage or oth­
er things that you plan to trans­
port so that you can make sure
that your vehicle will not be overloaded.
Steps for Determining
Correct Load Limit
1. Locate the statement "THE
COMBINED WEIGHT OF OC- CUPANTS AND CARGO
SHOULD NEVER EXCEED XXX
KG OR XXX LBS" on your ve­
hicle's placard (tire inflation
pressure label)
~ page 233,
fig. 195.
2. Determine the combined
weight of the driver and pas­
sengers that will be riding in
your vehicle.
3. Subtract the combined
weight of the driver and pas­
sengers from
"XXX" kilo­
grams or
"XXX" pounds
shown on the sticker
¢ page 233, fig. 195.
4. The resulting figure equals
the available amount of car­ go and luggage load capaci­
ty. For example, if the
"XXX"
amount equals 1400 lbs.
and there will be five 150
lbs. passengers in your vehi­
cle, the amount of available
cargo and luggage load ca­
pacity is 650 lbs. (1400-750
(5
X 150) = 650 lbs.)
5. Determine the combined weight of luggage and cargo being loaded on the vehicle.
That weight may not safely
exceed the available cargo .,.

250 Tires and wheels
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.
-Overloading tires cause heat build-up, sudden tire fail­
ure, including a blowout
and sudden deflation and
loss of control. -Temperature
grades apply
to tires that are properly in­
flated and not over or un­ derinflated .
-For technical reasons it is not always possible to use
wheels from other vehicles -
in some cases not even
wheels from the same vehi­
cle model.
-If you install wheel trim
discs on the vehicle wheels,
make sure that the air flow
to the brakes is not blocked .
Reduced airflow to the
brakes can them to over ­
heat, increasing stopping
distances and causing a col­
lision.
-Run flat tires may only be used on vehicles that were
equipped with them at the
factory. The vehicle must
have a chassis designed for
run flat tires . Incorrect use
of run flat tires can lead to
vehicle damage or acci­
dents. Check with an au­
thorized Audi dealer or tire
specialist to see if your vehi­
cle can be equipped with
run flat tires. If run flat tires .,.

M N
0:: <.J 'SI: ,...., \!) er, ,...., er, ,....,
Setup ..... .. .... .. .... ... .. .. .... 72
synchronizing ... .. .... ... .. .. .. .... 71
Automatic S hift Lock (ASL) .. .. .. .. .. . 104
Automatic transmission . . . . . . . . . . . . . . 103
Automatic Shift Lock (ASL) . .. .. .. .. . 104
Dnvmg .. ..... ........... ... ... .. 105
Emergency mode .............. .... 107
E mergency release ........ .. .. .. .. . 108
Kick-dow n . . . . . . . . . . . . . . . . . . . . . . . . 107
M anual sh ift program ..... .. .. .. .. . 10 7
Selec to r l ever . . . . . . . . . . . . . . . . . . . . . 103
Automatic wipe rs ....... ...... .... ... 48
Auto Safety Hotline ........ .. .. .. .. . 128
Aver age consumption ....... .. .. .. .. .. 24
Average speed . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid damaging the vehicle . ... .. .. ... 197
B
B ag hoo ks . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7
Battery . .. ... ...... ............. .. 22 1
C ha rging . ............ ...... .... .. 223
I mportant war nings ...... .. .. .. .. . 22 1
J um p starti ng ............ .... .. .. . 273
L ocat ion . .. ............. .. .. .. .. . 22 1
l ow ..... .. .. .. .. .. .... ... .. .. ... 193
Replacing the batte ry .. ... .. .. .. .. . 224
State of charge . ... .... ... .. .. .... . 193
W inter operation ......... .. .. .. .. . 221
Working on the battery .... .. .. .. .. . 221
B efore dr iving . ..... .... ... .. .. .. ... 120
Blended gasoline .... ...... .. .. .. .. . 206
Blower (automatic climate control) .. .. .. 71
B oost displ ay . . . . . . . . . . . . . . . . . . . . . . . . 28
Booster seats . . . . . . . . . . . . . . . . . . . . . . 17 4
Boost pressure indicator . ... .. .. .. .. .. 28
B rake flu id
C hanging the brake fl uid ... .. .. .. .. . 220
Che ckin g the br ake fl uid level . .. .. .. . 220
What is the cor rect brake flu id leve l? .. 220
What should I do if the bra ke fl uid warn-
ing light comes on? .... ... .. .. .. .. . 220
B ra ke system
Anti -lo ck bra king sys tem ... .. .. .. .. .. 18
B rake ass ist system .... ... .. .. .. .. . 18 7
Brake booster ... .. .... ... .. .. .. ... 191
Bra ke fl uid ... .... .... ... .. .. .. ... 220
Inde x 287
Brake fluid specifications fo r refill and re -
placement . ... .... . ... ...... ... .. 220
B rake pads . ... .. .. . .. ... .... ... .. 196
E lectromechanica l parking brake ... .. . 77
Flu id reservo ir . .. .... ............. 220
How does moistu re or road salt affect the
brakes? ... .. .. .. .. . .. .... .... .. .. 191
Warning/ind icator lights ........... .. 14
Wor n bra ke pads symbo l ........ .... . 19
braking guard Settings ........ .. ..... ........... 88
B raking guard ..... .. . .. .. ..... ... .. . 81
Messages ... .... .. . .. .. ..... ... .. . 88
B reak-in per iod .. .. .. .. ........... .. 196
Br ake pads .. .. .. ................. 196
T ires ... .. .. .. .... . ... ...... ... .. 196
Bulbs .. ... ... .. .... .......... ..... 272
C
Californ ia Proposition 6S Warn ing . .. .. 212
Battery spec ific .................. . 222
Capacities . ... .. .... . ... ...... ... .. 280
Engine o il ... .. .. ................. 213
Carbo n parts
Cleaning . . . . . . . . . . . . . . . . . . . . 203, 204
Car carrier Transpo rting your vehicle ........... 277
Care ......... .. .. ................. 201
Cargo area .. .. .. .. ............... .. 126
Cargo ne t . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Catalytic converter . . . . . . . . . . . . . . . . . . 197
Cen te r armres t
Cockpit . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Cent ral lock ing .. .. .. . .. .... .... .. .. . 33
E mergency locking .. .............. .. 37
Certif ication . ... .. .. .. ... ..... ... .. 285
Changi ng a wheel .. ............. .... 263
Changi ng engine oil ................. 216
Checking Engine coolant level .. .. ..... ... .. .. 217
Tire pressure . .. ...... ............. 237
C hild rest rain ts
Danger of using child restrain ts in the
fr ont seat ... .. .... . ... ...... ... .. 141
Where can I get additional informat ion
about child restraints and the ir use? .. 183
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