2015 AUDI RS5 CABRIOLET width

100 Audi side assist
Side assist functions at speeds above approxi­
mately 19 mph (30 km/h).
@ Vehicles that are approaching
In certain cases, a vehicle will be classified as
cr itica l for a lane change even if it is still
somewhat far away . The faster a vehicle ap­
proaches, the sooner the display in the exteri ­
or mirror will turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior m irror if they are classified as critica l
for a lane change. All vehicles detected by
side assist are indicated by the time they en­
ter your "blind spot", at the latest.
© Vehicles left behind
If you slowly pass a vehicle that side assist has
detected (the difference in speed between the
vehicle and your vehicle is less than 9 mph
(15 km/h)), the disp lay in the exterior mirror
turns on as soon as the vehicle enters your blind spot.
The display will not turn on if you quickly pass
a vehicle that side assist has detected (the dif­
ference in speed between the vehicle and your
vehicle is greater than 9 mph (15 km/h)).
Functional limitations
The radar sensors are designed to de tect the
l eft and right adjacent lanes when the road
lanes are the normal width. In certain situa­
tions, the display in the exterior mirror may
turn on even though there is no vehicle locat­
ed in the area that is critical for a lane change.
For example:
- if the lanes are narrow or if your are driving
on the edge of your lane. If this is the case,
the system may have detected the vehicle in
another lane that is
not adjacent to your
current lane.
- if you are driving through a curve. Side assist
may react to a veh icle that is one lane over
from the adjacent lane.
- if side assist reacts to other objects (such as
high or displaced guard ra ils). -
In poor weather conditions . The side assist
functions are limited.
Do not cover the rada r sensors
~ fig. 117 with
stickers, deposits, bicycle wheels or other ob­
jects, because this will affect the function . For
information on cleaning, refer to ¢
page 184.
A WARNING
-
-Always pay attention to traffic and to the
area around your vehicle. Side assist can­
not replace a driver's attention. The driv­
er alone is always responsible for lane
changes and similar dr iving maneuvers .
- Improper reliance on the side assist sys­
tem can cause coll is ions and serious per­
sonal injury:
- Never rely on ly on side assist when
changing lanes.
- Always check rear view mirrors to make
sure that it is safe to change lanes.
- Side assist cannot detect all vehicles un­
der all conditions- danger of accident!
- Please note that side assist indicates
there are approaching vehicles, or
vehicles in your blind spot, only after
your vehicle has reached a driving speed
of at least 19 mph (30 km/h).
- In certain sit uations, the system may not
function or its function may be limited.
For example:
- if vehicles are approach ing or being left
behind ve ry quickly. The d isp lay may
not turn on in time.
- in poor weather conditions such as
heavy rain, snow or heavy mist.
- on very wide lanes, in tight curves or if
there is a rise in the road surface.
Vehicles in the adjacent lane may not
be detected because they are outside
of the sensor range .
([) Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
u nderbody. This can affect the system. .,..

212 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.
...

214 Tires and whee ls
Ma ximum load r ating Overall width
means the load rating for a tire means the linear distance be-
at the maximum permissible in- tween the exteriors of the side-
flation pressure for that tire. walls of an inflated tire, includ -
Max imum lo ad ed vehicle ing elevations due to labeling,
weight decorations, or protective
means the sum of: bands or ribs
.
(a) Curb weight
Ply
(b) Accessory weight means a layer of rubber
-coated
(c) Vehicle capacity weight, and parallel cords
.
(d) Production options weight
Production options weight
Ma ximum (permissible )
means the combined we ight of
inflation pressure those installed regular produc-
means the maximum cold infla- tion options weighing over 5
tion pressure to which a tire lbs
. (2 .3 kg) in excess of those
may be inflated. Also called standard
items which they re-
"maximum inflation pressure." place, no
t previously consid-
Normal occupant weight
ered in curb weight or accessory
weight, including heavy duty
means 150 lbs. (68 kilograms) brakes, ride levelers, heavy duty
times the number of occupants battery, and special trim.
seated in the vehicle up to the
Radial ply tire total seating capac ity of your
vehicle . means a pneumatic tire in
Occupant distribution
which the p
ly cords that extend
to the beads are laid at s ub-
means distribution of occu -
stantially 90 degrees to the
pants in a vehicle .
centerline of the tread.
Outer diameter
Recommended inflation
means the overall diameter of pressure
an inflated new tire.
see c::> page 213, Cold tire infla-
tion pressure .
~

M N
er
u..
co ...... \!) 1.1'1
...... 1.1'1 ......
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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230 Tires and wheels
New tires and replacing
tires and wheels
New tires and wheels have to
be broken in.
Fig. 186 Tire specification codes on
the sidewall of a tire
No. Description
CD Passenger car tire (where
applicable)
@ Nominal width of tire in
millimeters
@ Ratio of height to width
(aspect ratio)
© Radial
® Rim diameter code
® Load index and speed rat-
1ng
(j) U.S. DOT tire identifica -
tion number
No. Description
® Audi Original tire
® Sever snow conditions
@ Tire ply composition and
materials used
@ Maximum load rating
@ Treadwear, traction and
temperature grades
@ Maximum permissible in-
flation pressure
The tires and rims are essential
parts of the vehicle's design.
The tires and rims approved by
Audi are specially matched to
the characteristics of the vehi­
cle and can make a major con­
tribution to good road holding and safe handling when in good
condition and properly inflated
¢ A .
We recommend that all work
on tires and wheels be per­
formed by an authorized Audi
dealer. They are familiar with recommended procedures and
have the necessary special tools
and spare parts as well as the
proper facilities for disposing of
the old tires.
Authorized Audi dealers have
the necessary information

232 Tires and wheels
P Indicates the tire is for pas­
senger cars (where applica­ ble)
265 Nominal tire width in mm
of the tire from sidewall
edge to sidewall edge. In
general, the larger the num­
ber, the wider the tire
35 Height/width ratio in per­
cent (aspect ratio)
R Tire construction: Radial
19 Rim diameter code (in in-
ches)
98 Load rating code
Y Speed rating letter code
XL (or "xl", "EXTRA LOAD", or
"RF" Indicates that the t ire is
a"Reinforced" or an "Extra
Load" tire
M+S (or "M/5") Indicates that
the tire has some mud and snow capability
The tires could also have the in­
formation of direction of rota­
tion
¢page 211.
Tire manufacturing date
The manufacturing date is also
indicated on the tire sidewall
l) For t ires with a maximum speed ca­
pability ov er 149 mph (240 km/h) ,
tire manufacturers sometimes use
the letters "ZR."
(possibly only on the inner side
of the wheel):
"DOT ... 2214 ... " means, for
example, that the tire was pro­
duced in the 22nd week of
2014.
Speed rating (letter code)
The speed rating letter code on
the wheels indicates the maxi­
mum permissible road speeds
¢ A in Winter tires on
page 237.
P up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
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)
1 )
Z over 149 mph (240 km/h)1)
W up to 168 mph (270 km/h)1
)
Y up to 186 mph (298 km/h)1) .,.

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. .,.

M N
er
u..
co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
and handling under a variety of driving condi­
tions. Ask your authorized Audi dea ler for
more deta ils.
The low aspect ratio of these tires is indicated
by a numeral of
55 or less in the tire's size
designation. The numeral represents the ratio
of the tire's sidewa ll height in relation to its
trea d width expressed in percentage. Conven­
ti onal tires have a height/width ratio of 60 or
more.
The performance of low-aspect-ratio tires is
particularly sensitive to improper inflation
pressure . It is therefore important that low
aspect ratio tires are inflated to the specified
pressur e and that the inflation pressure is
regularly checked and maintained. Tire pres­
sures should be checked at least once a
month and always before a long trip
¢ page 221, Checking tire pressure.
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact with potho les, curbs, gullies
or ridges on the road, particu larly if the tire is
underinflated .
I n order to minimize the occ urrence of impact
damage to the tir es of your vehicle, we recom­
mend that you observe the following precau­
tions:
- Always maintain recommended inflation
pressures. Check your tire pressure every
2,000 miles (3,000 km) and add air if neces­
sary .
- Drive carefully on roads with potholes, deep
gullies or ridges. The impact from driving
t hr ough or over such obstacles can damage
your tires. Impact with a curb may also
cause damage to your tires.
- After any impact, immediately inspect your
t ir es or have them inspected by the nearest
authorized Aud i dealer. Replace a damaged
t ir e as soo n as possible.
- Inspect your t ires every 2,000 miles (3,000
km) for damage and wear. Damage is not al­
ways easy to see . Damage can lead to loss of
air and underinflation, wh ich could eventu-
Tires and wheels 239
ally cause tire failure. If you believe that a
tire may have been damaged, rep lace the
tire as soon as possib le.
- These tires may wear more quickly than oth­
ers.
- Please also remembe r that, while these tires
deliver responsive handling, 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 or iginally installed on your vehicle are in­
tended for maximum dry and wet road per­
formance and handling. They are not suitable
for cold, snowy o r icy weather conditions. If
you drive under those circumstances, you
should equip your vehi cle w ith all-season or
winter tires, which offer better traction under
those conditions. We suggest you use the rec ­
ommended snow or a ll-season tires specified
for your vehicle, or their equivalent.
Refer to¢
page 236 for more de tailed infor­
mation regarding winter tires.
Ti re pressure
monitoring system
ill General notes
Applies to vehicles: with tire pressure monitoring system
Each tire, including the spare (if provided),
sho uld be checked monthly when cold and in ­
flated to the inflation pressure recommended by the veh icle manufacturer on the veh icle
placard or tire inflation pressure label. (If your
vehicle has tires of a d ifferent size than the
s ize indicated on the vehicle placard or tire in­
flat io n pressure label, you should determine
the proper t ire inflation pressu re for those
tires).
As an added safety feature, your veh icle has
been equipped with a tire pressure mon itoring
system (TPMS) that illum inates a low tire
pressure te llt ale when one or more of your
tires is significantly under-inflated. .,.
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