2016 AUDI S4 width

Audi side assist
General information
Applies to veh icles: w ith Aud i s ide ass ist
®
@
©
F ig . 125 Driving s ituations
I AU DI
•
Fig. 126 Rear of the veh icle: pos it ion of the sensors
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
critical for a lane change even if it is still some­
what far away. The faster a veh icle approaches,
the sooner the display in the exterior mirror w il l
turn on.
@ Vehicles traveling with you
Vehicles traveling with you are indicated in the
exterior mirror if they are classified as critical for
a lane change. All vehicles detected by side assist
108
are indicated by the time they enter your "blind
spot", at the latest .
© Vehicles left behind
If you slow ly pass a vehicle that side assist has
de tected (the diffe rence in speed between the
vehicle and your vehicle is less than 9 mph
(15 km/h)), the display in the exterior mirror
turns on as soon as the vehicle enters your blind
spot .
The display wi ll not turn on if you quickly pass a
vehicle that side assist has detected (the differ­ ence in speed between the vehicle and your vehi­
cle is greater than 9 mph (15 km/h)) .
Functional limitations
The radar sensors are designed to detect the left
and right adjacent lanes when the road lanes are
the normal width . In certain situations, the dis­
play in the exterior mirror may turn on even
though there is no vehicle located in the area
that is crit ical 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 anoth­
er lane that is
not adjacent to your current lane.
- if you are driv ing through a curve. Side assist
may react to a vehicle that is one lane over
from the adjacent lane .
- if side assist reacts to other objects (such as
high or displaced guard rails) .
- In poor weather conditions. The side ass ist
functions are limited.
Do not cover the radar sensors
c:> fig. 126 with
stickers, deposits, bicycle wheels or other ob­
j ects, because this w ill affect the function . Do not
use side assist when towing a trailer. For infor­
mation on cleaning, refer to
c:> page 193.
A WARNING
- Always pay attention to traff ic and to the
area around your vehicle. Side assist cannot
replace a driver's attention . The driver alone
is always responsible for lane changes and
-
similar driving maneuvers . IJ>-

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
Winter tires on page 232.
"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 (99 .42 mi/h )
218
Speed rat- Maximum permitted speed
Ing
R
up t o 106 mph (170 km/h)
s up to 110 mph (180 km/h)
T up to 1 18 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)al
z above 149 mph (240 km/h)al
w up to 168 mph (167 .77 mi/h) al
y up to 186 mph (300 km/h)al
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 ... 2215 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2015.
@ 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.
An authorized Audi dealer or au­
thorized Audi Service Facility will .,..

be happy to provide more infor­
mation.
® Mud and snow capability
"M/5 " or "M+S" indicates the tire
has character istics that make it
suitable for driving on mud and
snow .
& indicates a winter tire .
@Composition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the tire. In general: the
more layers , the more weight a
tire can carry . Tire manufacturers
must also specify the materials
used in the tire. These inc lude
steel, nylon, polyester and other
materials.
@ Maximum permitted load
This number indicates the max i­
mum load in kilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
traction and temperature resistance
Treadwear, traction and tempera­
ture ranges
c::> page 234 .
;;: @ Running direction
\:i ~ ...
'° V, ....
'° ....
The arrows indicate the running
direction of unidirectional tires .
Wheels
You must always follow the speci­
fied runn ing d irect ion
c::> page 244 .
@ Maximum permitted
inflation pressure
This number ind icates the maxi­
mum pressure to which a tire can
be inflated unde r normal operat ­
ing condit ions.
Glossary of tire and loading
terminology
Accessory weight
means the comb ined weigh t (in
excess of those standard items
which may be replaced) of auto­
matic transm ission, power steer­
ing , power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as facto ry-in­
stalled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the heigh t to
the width of the tire in percent .
Numbers of 55 or lowe r indicate a
low sidewa ll for improved steer­
ing response and better overall
handling on dry pavement. .,.
219

(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options we ight
Ma ximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a t ire may
be inflated. Also called "maxi ­
mum inflation pressure."
Normal occupant weight
means 150 lbs. (68 kilograms)
times the number of occupants
seated in the veh icle up to the to­
tal seating capacity of your vehi­ c le.
Occupant distribution
means distribution of occupants
in a vehicle.
Outer diameter
means the overall diameter of an
inflated new tire.
Overall width
means the linear distance be­
tween the exteriors of the side­
walls of an inflated tire, including elevations due to labeling, deco ­
rations, or protective bands or
ribs .
Wheels
Ply
means a layer of rubber-coated
parallel cords .
Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs. (2.3 kg) in excess of those standard
items which they replace, not pre­
viously considered in curb weight
or accessory weight, including heavy duty brakes , ride levelers,
roof rack, heavy duty battery, and
special trim .
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the beads are laid at substantially 90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see ~ page 220, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­ sponding standard tire. Rein ­
forced tires may be identified as .,.
221

Wheels
"XL" "xl" "EXTRA LOAD" or "RF" I I I
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 w ill have to p ur­
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.
S idewall
means that portion of a tire 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 time. The rat ings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 218.
You may not find
this information on all tires be ­
cause it is not requ ired by law.
222
The speed rating letter code,
where applicable, is molded on
the tire sidewall and ind icates the
maximum permissible road
speeds
¢ .&. in Winter tires on
page 232 .
Tire pressure monitoring
system*
means a system that detects
when one or mo re of a vehicle's
tires are underinflated and illum i­
na tes a low tire pressure warning
te lltale .
Tread
means that portion of a tire that
comes into contact w ith the road .
Tread separation
means pulling away o f the tread
from the t ire carcass .
Treadwear indicators (TWI)
means the projections within the
principal grooves designed to give
a visua l indication of the deg rees
of wear of the tread. Se e
¢ page 226, Treadwear indicator
for more information on measur-
ing tire wear. .,.

..... N
0 ::..:: co ..... ..... @ Tips
You can also use all season tires instead of
winter t ires . Please note that in some coun­
tries where w inter t ires are required, only
w inter t ires with the
& symbol may be per­
m itted.
Snow chains
Snow chains improve trac tion in the snow.
"' Only install snow chains on the front wheels.
This applies also to ve hicles w ith all wheel
drive* .
"' Check and correct the seating of the snow
chains if necessary after driving a few feet . Fol ­
low the instructions from the manufacturer.
"' Note the max imum permitted speed when d riv­
ing with snow chains . Do not ex ceed 30 mp h
(50 km/h).
Snow chains not only imp rove the
driving in win­
ter road cond itions, but also the
braking .
Use of snow chains is only perm itted with certain
r im/t ire combinations due to tec hnical reasons .
Check w ith an authorized Aud i dealer o r autho r­
iz ed A udi Service Fac ility to see if yo u may use
snow cha ins.
Use
fine-mesh snow chains . They must not add
mo re than 0.53 inch (13 .5 mm) in height , includ­
in g the chain lock.
You must remove the chains when driving on roads that are
free of snow. When roads are free
of snow, snow chains can impair handling and
damage the t ires, and t he cha ins w ill quickly be
destroyed.
_& WARNING
Us ing in co rrect snow chains o r inst alling snow
chains incorrectly can result in loss o f vehicle
cont rol, which inc reases t he risk of an acci­
dent.
([) Note
Snow chains can damage the rims/whee l cov­
ers * if the chains come into direct con ta ct
Wh eel s
with them. Remove the whee l covers* fi rst .
Use coated snow chains .
(D Tips
When driv ing wi th snow chains, it may he lp to
switch on sport/offroad mode<=>
page 178.
Low aspect ratio tires
Your Audi is factory -equ ipped with low aspect ra­
tio t ires . These tires have been thorough ly tested
and been selected spec ifically for your model for
their superb performance, road fee l and handling
under a var iety of dr iv ing condit ions . Ask your au­
thorized Aud i dea le r fo r more detai ls .
The low aspect rat io of these tires is indica ted by
a numeral of
55 or less in the t ire 's size des igna­
tion . The numeral represents the ratio of the
t ir e's s idewa ll height in relation to its t read width
exp ressed in perce ntage. Conve ntiona l tires have
a height/wid th ra tio of 60 or more.
The performance of low-asp ect-ratio tir es is par­
ticularly sen sitive to improper inflation pres ­
sure. It is therefore important that low aspect ratio tire s are inflated to the specified pressure
and that the inflation pressure i s regularly
checked and maintained. Tire pressures should
be checked at lea st once a month and alway s
before a long trip
¢ page 22 7 .
What you can do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more easi ­
l y by impact with potho les, curbs, gullies or
ridges on the road, particularly if the tire is un ­
der i nflated.
In order to minimize the occurrence of impact
damag e to the tires of yo ur v ehicle, we recom­
mend that you observe the following preca u­
tions:
- Always maintain recommended inflation pres­
sures . Check yo ur tire pressure every 2,000
m iles (3,000 km) and add air if necessary.
- Dr iv e carefully on roads w ith potholes, deep
gullies or ridges. The impact from dr iving
through or over such obstacles can damage
233

Wheels
you r tires. Impact with a cu rb may also cause
damag e to your tires .
- After any impact, immediately inspect your
tires or have them inspected by the nearest au­
thorized Audi dea ler. Replace a damaged tire as
soon as possib le.
- Inspect yo ur tires every 2,000 miles (3,000 km)
f or damage and wear. Damage is not always
easy to see. Damage can lead to loss of air and
underinflation, which could eventually cause
tire failure . If you believe that a tire may have
been damaged, replace the t ire as soon as pos­
s ible .
- These tires may wear more quickly than others .
- Please a lso remember that, w hile these t ires
deliver responsive handling, they may r ide less
comfortably and make more no ise than other
cho ices .
Reduced perform ance in winter /cold season
conditions
All tires are designed fo r certa in purposes. The
low aspect ratio, ultra hig h pe rformance t ires
or iginally insta lled on you r vehicle a re intended
for max imum dry and we t road performa nce and
handling. They are not s uita ble fo r cold, snowy or
icy weathe r cond itions. If you drive under those
circumstances, you shou ld equip your vehicle
with all-s eason or winter tires, which offer b etter
traction under those condit ions. We suggest you
use the recommended snow or all-season tires
specif ied for your vehicle, or their equivalent .
Ref er to ¢
page 232 for more detai led informa­
tion regarding winter tires.
Uniform tire quality grading
- Tread wear
- Traction AA A B C
- Temperature ABC
Q ua lity grades c an be found where app licab le on
the tire side wall between tread shoulde r and
maximum section width
¢ page 217, fig . 188.
For example : Tread wea r 200, Trac tion AA , Tem­
pe ra ture
A .
All passenger car tires must conform to Federal
Safety Requi rements in add ition to these grades.
234
Tre ad wear
The tread wear g rade is a compara tive rating
based on the wear rate of the tire when tested
u nder controlled conditions on a specified gov­
e rnment test course .
Fo r example, a tire g raded 150 wou ld wear one
and one half (1 1/2) times as we ll on the govern ­
ment course as a t ire graded 100.
The re lative pe rformance of tires depends upon
the actual cond itions o f the ir use, however, and
may depa rt sign ificantly from the no rm due to
variations in driv ing habits, service practices and
differences in road character istics and climate.
Traction
The traction grades , from highest to lowest, a re
AA, A, B and
C. Those g rades rep resent the tire 's
ability to stop on wet pavement as measured un ­
der controlled conditions on specified govern­
ment test s urfaces 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 t he tire's resistance to the
generat ion of heat and its ability to dissipate
heat when tested under controlled conditions on
a specified indoor laboratory test wheel.
Sustained high temperature can cause the mate­ rial of the tire to degenerate and reduce 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 un­
der the Federal Motor Vehicle Safety Standard No. 109 . Grades Band A represent higher levels
of performance on the laboratory test wheel than
the minimum requ ired by law .
A WARNING
-
The t ract ion g rade assigned to this t ire is
based on straight-ahead br aking traction
tes ts, and does not include acceler ation, cor­
nering, hydroplaning or pea k traction charac­
teristics .

Tech nical data
Gross Axle Weight Rating
The G ross Ax le We ight Rating is the max imum
load that can be applied at each axle of the vehi ­
cle ¢& .
Vehicle capacity weight
The vehicle capacity we ight (max. load) is l isted
on the d river's side 8-p illar.
_& WARNING
- T he ac tual Gross Axle Weight Rating a t the
front and rear axles sho uld not exceed the
permissible weights, and their combination
must not exceed the Gross Veh icle Weight
Rating.
Dimensions
Leng th in
(mm)
Width in
(mm)
Width (across mirrors) in (mm)
He ight (unloaded)al in (mm) -
Exceed ing permissible weight ratings can
result in vehicle damage, accidents and per­
sonal injury.
(D Note
- The vehicle capacity weight figures apply
when the load is d istr ibuted evenly in the
vehicle (passengers and luggage). When
t ransporting a heavy load in the luggage
compartment, carry the load as near to the
rea r axle as possib le so that the vehicle's
hand ling is not impaired .
- Do not exceed the max imum perm iss ible
axle loads or the maximum g ross veh icle
we ight. Always remember that the ve hicle's
han dling will be affe cted by the extra load.
T herefore, a djust your speed acco rd ingly.
- Always observe lo cal regulations.
A4Sedan S4Sedan
allroad/
A4 allroad
1 85.1 (4 70 1) 185. 7 (4716) 18 5.9 (4721)
71.9 (1826) 71.9 (1826) 72.5 (1841)
80.3 (20 40) 80.3 (20 40) 78.9 (2006)
56.2 (1427) 55.4 (1406) 58.0 (1473)
a) The height of th e veh icle depends on t he tir es and the suspens ion.
When driving up steep ramps, on rough roads,
over curbs, etc . it is important to remember that
some parts of you r vehicle, such as spoi lers or ex-
Capacities
Fuel tank: tota l capacity
Windsh ie ld a nd headlight* washer fluid conta iner
256
haust system components, may be close to the
ground. Be careful not to damage them .
gal (liters)
16.1 (61.0)
quarts (l ite rs) 4.8 ( 4.5)