2012 MERCEDES-BENZ E-CLASS COUPE run flat

other obstacles. If it is necessary to drive over
kerbs, speed humps or similar elevations, try
to do so slowly and at an obtuse angle. Oth-
erwise, the tyres, particularly the sidewalls,
may be damaged. Regular checking of wheels and tyres
G
WARNING
Damaged tyres can cause tyre inflation pres-
sure loss. As a result, you could lose control
of your vehicle. There is a risk of accident.
Check the tyres regularly for signs of damage
and replace any damaged tyres immediately.
Regularly check the wheels and tyres of your
vehicle for damage at least once a month, as
well as after driving off-road or on rough
roads. Damaged wheels can cause a loss of
tyre pressure. Pay particular attention to
damage such as:
R cuts in the tyres
R punctures
R tears in the tyres
R bulges on tyres
R deformation or severe corrosion on wheels
Regularly check the tyre tread depth and the
condition of the tread across the whole width
of the tyre (Y page 341). If necessary, turn
the front wheels to full lock in order to inspect
the inner side of the tyre surface.
All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not fit
anything onto the valve other than the stand-
ard valve cap or other valve caps approved by
Mercedes-Benz for your vehicle. Do not fit any
other valve caps or systems, e.g. tyre pres-
sure monitoring systems.
Regularly check the pressure of all the tyres,
particularly prior to long trips. Adjust the tyre
pressure as necessary (Y page 343).
Observe the notes on the emergency spare
wheel (Y page 363). The service life of tyres depends on various
factors, including the following:
R
driving style
R tyre pressure
R tyre mileage Tyre tread
G
WARNING
Insufficient tyre tread will reduce tyre trac-
tion. The tyre is no longer able to dissipate
water. This means that on wet road surfaces,
the risk of aquaplaning increases, in particular
where speed is not adapted to suit the driving
conditions. There is a risk of accident.
If the tyre pressure is too high or too low, tyres
may exhibit different levels of wear at differ-
ent locations on the tyre tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
width of all tyres.
Minimum tyre tread depth for:
R summer tyres: 3 mm
R M+S tyres: 4 mm
For safety reasons, replace the tyres before
the legally prescribed limit for the minimum
tyre tread depth is reached.. Selecting, fitting and replacing tyres
R Only fit tyres and wheels of the same type
and make.
R Only fit tyres of the correct size onto the
wheels.
R Run in new tyres at moderate speeds for
the first 100 km. They only reach their full
performance after this distance.
R Do not drive with tyres which have too little
tread depth. This otherwise significantly
reduces the traction on wet roads (aqua-
planing).
R Replace the tyres after six years at the lat-
est, regardless of wear. Operation
341Wheels and tyres Z

Observe the notes on the emergency spare
wheel (Y
page 363). MOExtended tyres (tyres with run-flat
characteristics)
With MOExtended tyres (tyres with run-flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tyres.
MOExtended tyres may only be used in con-
junction with an active tyre pressure loss
warning system or with an active tyre pres-
sure monitor and on wheels specifically tes-
ted by Mercedes-Benz.
Notes on driving with MOExtended tyres with
a flat tyre (Y page 324).
i Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit
if you fit tyres that do not feature run-flat
characteristics, e.g. winter tyres. A TIREFIT
kit can be obtained from a qualified spe-
cialist workshop. Winter operation
General notes
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section (Y page 346). Driving with summer tyres
At temperatures below +7 †, summer tyres
lose elasticity and therefore traction and
braking power. Change the tyres on your vehi-
cle to M+S tyres. Using summer tyres at very
cold temperatures could cause tears to form,
thereby damaging the tyres permanently.
Mercedes-Benz cannot accept responsibility
for this type of damage. M+S tyres
G
WARNING
M+S tyres with a tyre tread depth of less than
4mma re not suitable for use in winter as they
do not provide sufficient traction. There is a
risk of accident.
M+S tyres with a tread depth of less than
4 mm must be replaced.
At temperatures below +7 †, use winter tyres
or all-seaso ntyres .Both types of tyre are
identified by the M+S marking.
Only winter tyres bearing the isnowflake
symbol in addition to the M+S marking pro-
vide the best possible grip in wintry road con-
ditions.
Only these tyres will allow driving safety sys-
tems such as ABS and ESP ®
to function opti-
mally in winter. These tyres have been devel-
oped specifically for driving in snow.
Use M+S tyres of the same make and tread
on all wheels to maintain safe handling char-
acteristics.
Always observe the maximum permissible
speed specified for the M+S tyres you have
fitted.
If you fit M+S tyres that have a lower maxi-
mum permissible speed than that of the vehi-
cle, affix a corresponding warning label in the
driver's field of vision. This can be obtained
at a qualified specialist workshop.
Under these circumstances, you should also
restrict the maximum speed of the vehicle
using permanent SPEEDTRONIC so that it
does not exceed the maximum permissible
speed for the M+S tyres (Y page 188).
When you have fitted the M+S tyres:
X Check the tyre pressures (Y page 343).
X Restart the tyre pressure loss warning sys-
tem (Y page 345).
For more information on driving with an emer-
gency spare wheel, see (Y page 363).342
Winter operationWheels and tyres

message will appear in the multifunction dis-
play.
The tyre pressure warning system does not
warn you of an incorrectly set tyre pressure.
Observe the notes on the recommended tyre
pressure (Y page 343).
The tyre pressure loss warning system does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detected by the tyre pressure loss
warning system.
The tyre pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tyre is penetrated by a foreign object. In the
event of a sudden loss of pressure, bring the
vehicle to a haltb y braking carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delaye dif:
R snow chains are fitted to you rvehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt a very sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration).
R you are towing a very heavy or large trailer.
R you are driving with a heavy load (in the
vehicle or on the roof).
Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, make sure that the tyre
pressures are set properly on all four tyres
for the respective operating conditions.
The recommended tyre pressures can be
found in the table on the fuel filler flap. The
tyre pressure loss warning system can only give reliable warnings if you have set the
correct tyre pressure. If an incorrect tyre
pressure is set, these incorrect values will
be monitored.
X Also observe the notes in the section on
tyre pressures (Y page 343).
X Make sure that the key is in posi-
tion 2(Ypage 159) in the ignition lock.
X Press =or; on the steering wheel
to select the Serv. menu.
X Press the 9or: button to select
Tyre pressure .
X Press the abutton.
The Run Flat Indicator active Restart with OK message appears in the
multifunction display.
If you wish to confirm the restart:
X Press button a.
The Tyre press. now OK? message
appears in the multifunction display.
X Press the 9or: button to select
Yes .
X Press the abutton.
The Run Flat Indicator restarted message appears in the multifunction dis-
play.
After a teach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres.
If you wish to cancel the restart:
X Press button %.
or
X When the Tyre press. now OK? message
appears, press the 9or: button to
select Cancel .
X Press the abutton.
The tyre pressure values stored at the last
restart will continue to be monitored. Tyre pressure
345Wheels and tyres Z

These are specially adapted to the control
systems, such as ABS or ESP ®
and are
marked as follows:
R MO =Mercedes-Benz Original
R MOE =Mercedes-BenzO riginal Extended
(tyres featuring run-flat characteristics)
R MO1 =Mercedes-Benz Original (only cer-
tain AMG tyres)
Mercedes-BenzO riginal Extended tyres
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tyres, wheels or accessories tes-
ted and approved by Mercedes-Benz. Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with aload, tyre dimen-
sion variations could cause the tyres to
come into contact with the bodywork and
axle components.T his could result in dam-
age to the tyres or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tyres,
wheels or accessories othe rthan those tes-
ted and approved.
Further information about wheels, tyres
and approved combinations can be
obtained from any qualified specialist
workshop.
! Retreaded tyres are neither tested nor
recommended by Mercedes-Benz, since
previous damage cannot always be detec-
ted on retreaded tyres. As a result,
Mercedes-Ben zcannot guarantee vehicle
safety if retreaded tyres are fitted. Do not
fit used tyres if you have no information
about their previous usage.
! Large wheels :the lower the section width
for a certain wheel size, the lower the ride
comfort is on poor road surfaces. Roll com-
fort and suspension comfort are reduced
and the risk of damage to the wheels and
tyres as a result of driving over obstacles
increases. Overview of abbreviations used in the follow-
ing tyre tables:
R
BA: both axles
R FA: front axle
R RA: rear axle
You will find a table with recommended tyre
pressures for various operating conditions on
the inside of your vehicle's fuel filler flap. For
further information on tyre pressure, see
(Y page 343). Check tyre pressures regularly
and only when the tyres are cold.
Notes on the vehicle equipment –always fit
the vehicle:
R with tyres of the same size on a given axle
(left/right)
R with the same type of tyres at a given time
(summer tyres, winter tyres, MOExtended
tyres)
Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory. It
is therefore recommended that you addition-
ally equip your vehicle with a TIREFIT kit if you
fit tyres that do not feature run-flat charac-
teristics, e.g. winter tyres. A TIREFIT kit can
be obtained fro maqualified specialist work-
shop.
i Not all wheel/tyre combinations can be
mounted at the factory in all countries. Wheel and tyre combinations
351Wheels and tyres Z

E 250 CDI BlueEFFICIENCY
Summer tyres
R 16
Tyres Light-alloy wheels
BA: 205/55 R16 91 W
3, 4 BA: 7.0 J x 16 H2 ET 38
R 17
Tyres Light-alloy wheels
BA: 235/45 R17 94 W
5 BA: 7.5 J x 17 H2 ET 45
BA: 235/45 R17 94 W MOExtended
5, 6 BA: 7.5 J x 17 H2 ET 45
FA: 235/45 R17 94 W
RA: 255/40 R17 94 W
7 FA: 7.5 J x 17 H2 ET 45
RA: 8.5 J x 17 H2 ET 49
FA: 235/45 R17 94 W MOExtended
6
RA: 255/40 R17 94 W MOExtended 6, 7 FA: 7.5 J x 17 H2 ET 45
RA: 8.5 J x 17 H2 ET 49
R 18
Tyres Light-alloy wheels
FA: 235/40 R18 91 Y
8
RA: 255/35 R18 94 Y XL 7, 8 FA: 8.0 J x 18 H2 ET 45
RA: 8.5 J x 18 H2 ET 49
3
Only for Coupé.
4 Not in combination with Sports package code 950/952, sports suspension code 486 or dynamic handling
package code 483.
5 Cabriolet :not in combination with Sports package code 950/952, sports suspension code 486 or dynamic
handling package code 483.
6 MOExtended tyres (tyres featuring run-flat characteristics) only in combination with an active tyre pressure
loss warning system.
7 Use of snow chains is not permitted. Observe the notes under "Snow chains".
8 Only in combination with Sports package code 950/952, sports suspension code 486 or dynamic handling
package code 483. 360
Wheel and tyre combinationsWheels and tyres

Tyres Light-alloy wheels
FA: 235/45 R17 94 W
RA: 255/40 R17 94 W
7 FA: 7.5 J x 17 H2 ET 45
RA: 8.5 J x 17 H2 ET 49
FA: 235/45 R17 94 W MOExtended
6
RA: 255/40 R17 94 W MOExtended 6, 7 FA: 7.5 J x 17 H2 ET 45
RA: 8.5 J x 17 H2 ET 49
R 18
Tyres Light-alloy wheels
FA: 235/40 R18 91 Y
8
RA: 255/35 R18 94 Y XL 7, 8 FA: 8.0 J x 18 H2 ET 45
RA: 8.5 J x 18 H2 ET 49
R 19
Tyres Light-alloy wheels
FA: 235/35 ZR19 XL
8, 9, 10
RA: 255/30 ZR19 XL 7, 8, 9, 10 FA: 8.5 J x 19 H2 ET 44
RA: 8.5 J x 19 H2 ET 44
FA: 235/35 ZR19 91Y XL
8, 9, 10
RA: 255/30 ZR19 91Y XL 7, 8, 9, 10 FA: 8.0 J x 19 H2 ET 44
RA: 8.5 J x 19 H2 ET 48
Winter tyres
R 17
Tyres Light-alloy wheels
BA: 235/45 R17 94 H M+S
i BA: 7.5 J x 17 H2 ET 45
BA: 235/45 R17 94 H M+S
iMOExtended6 BA: 7.5 J x 17 H2 ET 45
R 18
Tyres Light-alloy wheels
BA: 235/40 R18 95 H X M+S
i BA: 8.0 J x 18 H2 ET 45
7
Use of snow chains is not permitted .Observe the notes under "Snow chains".
6 MOExtended tyres (tyres featuring run-flat characteristics) only in combination with an active tyre pressure
loss warning system.
8 Only in combination with Sports package code 950/952, sports suspension code 486 or dynamic handling
package code 483.
9 Observe notes on "Large wheels" under "General notes" in "Wheel and tyre combination" section.
10 Not in combination with trailer tow hitch code 550. 362
Wheel and tyre combinationsWheels and tyres