2015 MERCEDES-BENZ S-COUPE wheel size

Tires/wheels ................................. 266
Vehicle data ................................... 281
Telephone
Accepting a call (multifunction
steering wheel) .............................. 164
Number from the phone book ........ 164
Redialing ....................................... .164
Rejecting/ending a call ................. 164
see also Digital Operator's Man-
ual ................................................. .188
Temperature
Setting (climate control) ................ 111
Tire pressure
Calling up (on-board computer) ..... 246
Checking manually ........................ 246
Display message ............................ 175
Important safety notes .................. 246
Maximum ....................................... 245
Not reached (TIREFIT) .................... 223
Notes ............................................. 244
Reached (TIREFIT) .......................... 224
Recommended ............................... 243
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 248
Function/notes ............................ .246
General notes ................................ 246
Important safety notes .................. 246
Radio type approval for the tire
pressure monitor ........................... 249
Restarting ...................................... 248
Warning lamp ................................. 185
Warning message .......................... 248
TIREFIT kit .......................................... 222
Tires
Aspect ratio (definition) ................. 260
Average weight of the vehicle
occupants (definition) .................... 259
Bar (definition) ............................... 259
Changing a wheel .......................... 261
Characteristics .............................. 259
Checking ........................................ 241
Curb weight (definition) ................. 260
Definition of terms ......................... 259
Direction of rotatio n...................... 262
Display message ............................ 175
Distribution of the vehicle occu-
pants (definition) ............................ 261 DOT (Department of Transporta-
tion) (definition) ............................. 259
DOT, Tire Identification Number
(TIN) ............................................... 258
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 259
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 260
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 260
Important safety notes .................. 240
Increased vehicle weight due to
optional equipment (definition) ...... 259
Kilopascal (kPa) (definition) ........... 260
Labeling (overview) ........................ 255
Load bearing index (definition) ...... 261
Load index ..................................... 258
Load index (definition) ................... 260
Maximum load on a tire (defini-
tion) ............................................... 260
Maximum loaded vehicle weight
(definition) ..................................... 260
Maximum permissible tire pres-
sure (definition) ............................. 260
Maximum tire load ......................... 258
Maximum tire load (definition) ....... 260
MOExtended tire s.......................... 242
Optional equipment weight (defi-
nition) ............................................ 261
PSI (pounds per square inch) (def-
inition) ........................................... 260
Replacing ....................................... 261
Service life ..................................... 242
Sidewall (definition) ....................... 261
Speed rating (definition) ................ 260
Storing ........................................... 262
Structure and characteristics
(definition) ..................................... 259
Summer tires in winter .................. 242
Temperature .................................. 255
TIN (Tire Identification Number)
(definition) ..................................... 261
Tire bead (definition) ...................... 261
Tire pressure (definition) ................ 260
Tire pressures (recommended) ...... 259
Tire size (data) ............................... 266
Tire size designation, load-bearing capacity, speed rating .................... 255
18Index

Securing from rolling away ............ 262
Towing away .................................. 232
Transporting .................................. 234
Unlocking (in an emergency) ........... 83
Unlocking (SmartKey) ...................... 79
Vehicle data ................................... 281
Vehicle dimensions ........................... 281
Vehicle emergency locking ................ 83
Vehicle identification number
see VIN
Vehicle identification plate .............. 274
Vehicle level
Active Body Control ABC ............... 140
Vehicle maintenance
see ASSYST PLUS
Vehicle tool kit .................................. 220
Video
see also Digital Operator's Man-
ual .................................................. 188
Video (DVD) ........................................ 164
VIN ...................................................... 274
Voice Control System
see Separate operating instructions
W
Warning and indicator lampsABS ................................................ 179
Brakes ........................................... 178
Check Engine ................................. 176
Coolant .......................................... 183
Distance warning ........................... 184 ESP ®
.............................................. 181
ESP ®
OFF ....................................... 182
General notes ................................ 176
Overview .......................................... 34
PASSENGER AIR BAG ...................... 43
Reserve fue l................................... 176
Restraint system ............................ 182
Seat belt ........................................ 177
Steering ......................................... 186
Tire pressure monitor .................... 185
Warranty .............................................. 24
Washer fluid
Display message ............................ 165
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 266Wheel chock
...................................... 262
Wheels
Changing a whee l.......................... 261
Checking ........................................ 241
Cleaning ......................................... 217
Important safety notes .................. 240
Interchanging/changing ................ 261
Mounting a new whee l................... 265
Mounting a whee l.......................... 262
Removing a whee l.......................... 265
Storing ........................................... 262
Tightening torque ........................... 266
Wheel size/tire size ....................... 266
Window curtain air bag
Operation ......................................... 51
Windows
see Side windows
Windshield
Defrosting ...................................... 111
Infrared reflective .......................... 198
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 215
Notes ............................................. 280
Windshield wipers
Problem (malfunction) ................... 107
Replacing the wiper blades ............ 106
Switching on/of f........................... 106
Winter driving
Important safety notes .................. 242
Slippery road surfaces ................... 128
Snow chains .................................. 242
Winter operation
Summer tires ................................. 242
Winter tires
M+S tires ....................................... 242
Wiper blades
Cleaning ......................................... 217
Important safety notes .................. 106
Replacing ....................................... 106
Wooden trim (cleaning instruc-
tions) .................................................. 218
Workshop
see Qualified specialist workshop
20Index

ous situations, PRE-SAFE®
PLUS takes pre-
emptive measures to protect the vehicle
occupants.
Important safety notes
The intervention of PRE-SAFE ®
PLUS cannot
prevent an imminent collision.
The driver is not warned when PRE-SAFE ®
PLUS intervenes.
PRE-SAFE ®
PLUS does not intervene if the
vehicle is backing up.
PRE-SAFE ®
PLUS does not perform braking
actions while the vehicle is in motion or when
Parking Guidance is active.
Function
PRE-SAFE ®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision.
PRE-SAFE ®
PLUS takes the following meas-
ures depending on the hazardous situation
detected:
R if the radar sensor system detects that a
head-on collision is imminent, the seat
belts are pre-tensioned.
R if the radar sensor system detects that a
rear-end collision is imminent:
- the brake pressure is increased if the
driver applies the brakes when the vehi-
cle is stationary.
- the seat belts are pre-tensioned.
The PRE-SAFE ®
PLUS braking application is
canceled:
R if the accelerator pedal is depressed when
a gear is engaged
R if the risk of a collision passes or is no lon-
ger detected
R if DISTRONIC PLUS indicates an intention
to pull away
If the hazardous situation passes without
resulting in an accident, the original settings
are restored.
Automatic measures after an acci- dent
Immediately after an accident, the following
measures are implemented, depending on
the type and severity of the impact:
R the hazard warning lamps are activated
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R the electrically adjustable steering wheel is
raised
R the engine is switched off and the fuel sup-
ply is cut off
R vehicles with mbrace: automatic emer-
gency call
Children in the vehicle
Important safety notes
Accident statistics show that children
secured in the rear seats are safer than chil-
dren secured in the front-passenger seat. For
this reason, Mercedes-Benz strongly advises
that you install a child restraint system on a
rear seat. Children are generally better pro-
tected there.
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
R always secure the child in a child restraint
system suitable for Mercedes-Benz vehi-
cles. The child restraint system must be
appropriate to the age, weight and size of
the child
R be sure to observe the instructions and
safety notes in this section in addition to
the child restraint system manufacturer's
installation instructions
R be sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" ( Ypage 51)
60Children in the vehicle
Safety

The brakes will work normally again if:
R you release the brake pedal.
R there is no longer any danger of a collision.
R no obstacle is detected in front of your vehicle.
Adaptive Brake Assist is then deactivated.
If adaptive Brake Assist demands particularly
high braking force, preventative passenger
protection measures (PRE-SAFE ®
) are activa-
ted simultaneously.
Up to a speed of approximately 155 mph
(250 km/ h), adaptive Brake Assist is capable
of reacting to moving objects that have
already been detected as such at least once
over the period of observation.
Up to a speed of approximately 44 mph
(70 km/h), adaptive Brake Assist reacts to
stationary obstacles.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-
tion ( Ypage 65).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-
tion ( Ypage 65).
ETS traction control is part of ESP ®
. On vehi-
cles with 4MATIC, 4ETS is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull away and accelerate on slippery surfaces, for
example if the road surface is slippery on one side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
.
Important safety notes
GWARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further driv- ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
Vehicles without 4MATIC: observe the notes
on ESP ®
(Y page 234) when towing the vehi-
cle with a raised rear axle.
ESP ®
is only deactivated if the åwarning
lamp is lit continuously.
If the ÷ warning lamp lights up continu-
ously, ESP ®
is not available due to a malfunc-
tion.
Observe the information on warning lamps ( Y page 181) and display messages which
may be shown in the instrument cluster( Y page 166).
Only use wheels with the recommended tire
sizes. Only then will ESP ®
function properly.
Characteristics of ESP®
General information
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
active.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
Driving safety systems71
Safety
Z

XOpen the driver's door.
The on-board electronics now have status0. This is the same as the SmartKey having
been removed.
X Remove Start/Stop button from ignition
lock ( Ypage 115).
or, if the SmartKey is inserted in the ignitionlock:
X Remove the SmartKey from the ignitionlock.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
MOExtended tires (tires with run-flat
properties)
General notes
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking next to the tire size designation, the load-
bearing capacity and the speed index( Y page 255).
MOExtended tires may only be used in con-
junction with an active tire pressure monitor. If the pressure loss warning message
appears in the multifunction display:
R Observe the instructions in the display
messages ( Ypage 175).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is approx-
imately 50 miles (80 km) when the vehicle is
partially laden and approximately 18 miles
(30 km) when the vehicle is fully laden.
In addition to the vehicle load, the driving dis- tance possible depends upon:
R Speed
R Road condition
R Outside temperature
The driving distance possible in run-flat mode may be reduced by extreme driving condi-
tions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).iWhen replacing one or all tires, make sure
that you use only tires:
R of the size specified for the vehicle and
R marked "MOExtended"
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a stand-
ard tire may be used as a temporary meas-
ure. Make sure that you use the proper size and type (summer or winter tire).
iVehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit may be obtained from a quali- fied specialist workshop.
Flat tire221
Roadside Assistance

Useful information
iThis Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
iRead the information on qualified special-
ist workshops ( Ypage 27).
Important safety notes
GWARNING
If wheels and tires of the wrong size are used,
the wheel brakes or suspension components
may be damaged. There is a risk of an acci-
dent.
Always replace wheels and tires with those
that fulfill the specifications of the originalpart.
When replacing wheels, make sure to use the
correct:
R designation
R model
When replacing tires, make sure to use the
correct:
R designation
R manufacturer
R model
GWARNING
A flat tire severely impairs the driving, steer-
ing and braking characteristics of the vehicle.
There is a risk of accident.
Tires without run-flat characteristics:
R do not drive with a flat tire.
R immediately replace the flat tire with your
emergency spare wheel or spare wheel, or
consult a qualified specialist workshop.
Tires with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tires (tires with
run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benz or that are not
being used correctly can impair operating
safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist work-
shop and inquire about: R suitability
R legal stipulations
R factory recommendations
Information on the dimensions and types of
wheels and tires for your vehicle can be found in the "Wheel/tire combinations" section( Y page 266).
Information on air pressure for the tires on
your vehicle can be found:
R on the vehicle's Tire and Loading Informa-
tion placard on the B-pillar ( Ypage 249)
R on the tire pressure label on the fuel filler
flap ( Ypage 123)
R under "Tire pressure" ( Ypage 243)
Operation
Information on driving
If the vehicle is heavily loaded, check the tire
pressures and correct them if necessary.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicate that the wheels or tires are damaged. If you sus-
pect that a tire is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to check the wheels and tires for
damage. Hidden tire damage could also be
causing the unusual handling characteristics.
If you find no signs of damage, have the tires and wheels checked at a qualified specialist
workshop.
240Operation
Wheels and tires

reached. If this is the case, the tire is so wornthat it must be replaced.
Selecting, mounting and replacing tires
R Only mount tires and wheels of the same
type and make.
Exception: it is permissible to install a dif-
ferent type or make in the event of a flat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics" section(Y page 221).
R Only mount tires of the correct size onto
the wheels.
R Break in new tires at moderate speeds for
the first 60 miles (100 km). They only reach
their full performance after this distance.
R Do not drive with tires which have too little
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
R Replace the tires after six years at the lat-
est, regardless of wear.
MOExtended tires (tires with run-flat properties)
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires.
MOExtended tires may only be used in con-
junction with an active tire pressure monitor
and only on wheels specifically tested by
Mercedes-Benz.
Notes on driving with MOExtended tires with
a flat tire ( Ypage 221).
iVehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires.
A TIREFIT kit can be obtained from a quali- fied specialist workshop.
Winter operation
General notes
You can find information about this in the
Digital Operator's Manual.
Driving with summer tires
At temperatures below 45 ‡(+7 †), summer
tires lose elasticity and therefore traction and braking power. Change the tires on your vehi-cle to M+S tires. Using summer tires at very
cold temperatures could cause cracks to
form, thereby damaging the tires perma-
nently. Mercedes-Benz cannot accept
responsibility for this type of damage.
GWARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control ofyour vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
M+S tires
GWARNING
M+S tires with a tire tread depth of less than ã in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than ãin
(4 mm) must be replaced immediately.
Further information can be found in the Digi-
tal Operator's Manual.
Snow chains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
242Winter operation
Wheels and tires

The tire pressure table contains the recom-
mended pressures for cold tires for various
operating conditions, i.e. differing load and
speed conditions.
Example: tire pressure table with tire dimensions
If a tire size precedes a tire pressure, the tirepressure information following is only valid
for that tire size. The load conditions "partially
laden" and "fully laden" are defined in the
table for different numbers of occupants and
amounts of luggage. The actual number of
seats may differ.
Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g.R18 . The rim diameter is part of the tire size
and can be found on the tire sidewall( Y page 255).
If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset to the higher values:
R if you want to drive with an increased loadand/or
R if you want to drive at higher road speeds
iThe tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may have a negative
effect on driving comfort.
If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and a sudden loss of pressure.
For more information, contact a qualified spe-
cialist workshop.
Important notes on tire pressure
GWARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident.
R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop.
GWARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about the tire pressure. On vehicles equipped with
the electronic tire pressure monitor, the tire
pressure can be checked in the on-board
computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is depend-
ent on the driving speed and the load.
244Tire pressure
Wheels and tires