2014 MERCEDES-BENZ SLK ROADSTER snow chains

M+S tyres with a tread depth of less than
4 mm must be replaced.
At temperatures below +7 †, use winter tyres or all-season tyres. Both are marked with
M+S.
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 charac-
teristics.
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 an appropriate warning sign 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 182).
When you have fitted the M+S tyres:
X Check the tyre pressures (Y page 318).
X Restart the tyre pressure loss warning sys-
tem (Y page 320).
For more information on driving with the
emergency spare wheel, see (Y page 334).Snow chains
G
WARNING
If you have fitted snow chains to the front
wheels, they may scrape against the vehicle
body or chassis components. This could cause damage to the vehicle or the tyres.
There is a risk of an accident.
To avoid hazardous situations:
R never fit snow chains on the front wheels
R fit snow chains to the rear wheels in pairs.
! Vehicles with steel wheels:
if you fit
snow chains on steel wheels, you may dam-
age the hub caps. Remove the hub caps
from the relevant wheels before fitting the
snow chains.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that
have been specifically approved for your vehi- cle by Mercedes-Benz, or that are of a corre-
sponding standard of quality.
If you intend to fit snow chains, please bear
the following points in mind:
R snow chains cannot be fitted to all wheel-
tyre combinations. Permissible wheel-tyre
combinations (Y page 328).
R only use snow chains if the road surface is
completely snow-covered. Remove the
snow chains as soon as possible when you
come to a road that is not snow-covered.
R local regulations may restrict the use of
snow chains. Observe the appropriate reg- ulations if you wish to fit snow chains.
R do not exceed the maximum permissible
speed of 50 km/h.
i You may wish to deactivate ESP ®
when
pulling away with snow chains fitted
(Y page 63). This way you can allow the
wheels to spin in a controlled manner, ach-
ieving an increased driving force (cutting
action).
For more information on driving with the
emergency spare wheel, see (Y page 334). Winter operation
317Wheels and tyres Z

The tyres are cold:
R if the vehicle has been parked with the tyres
out of direct sunlight for at least three
hours and
R if the vehicle has not been driven further
than 1.6 km
Depending on the ambient temperature, the
speed at which you are driving and the load on the tyres, the tyre temperature and thus the
tyre pressure changes by approximately
10 kPa (0.1 bar/1.5 psi) per 10 †. Take this
into account when checking the pressure of
warm tyres. Only correct the tyre pressure if it
is too low for the current operating condi-
tions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have a negative effect on handling charac-
teristics and thus driving safety (e.g. aqua- planing)
For speeds up to 210 km/h (does not
apply to AMG vehicles): the values given on
the tyre pressure information label (fuel filler
flap) for speeds up to 210 km/h may be
reduced by 30 kPa (0.3 bar/4 psi) without a
reduction in safety. This improves the ride
comfort of your vehicle; however, the fuel
consumption may increase slightly.
i The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
However, you can also use the values given for higher loads. These are permissible andwill not adversely affect the running of the
vehicle. Tyre pressure loss warning system
General notes While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of the wheels. This enables the system to detect
significant pressure loss in a tyre. If the speed
of rotation of a wheel changes as a result of a loss of pressure, a corresponding warning
message will appear in the multifunction dis-
play.
You can recognise the tyre pressure loss
warning by the Run Flat Indicator
Run Flat Indicator
active Restart with OK active Restart with OK message which
appears in the Serv.
Serv. menu of the multifunc-
tion display. Information on the message dis- play can be found in the "Restarting the tyre
pressure loss warning system" section
(Y page 320).
Important safety notes 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 318).
The tyre pressure loss warning does not
replace the need to regularly check the tyre
pressures. An even loss of pressure on sev-
eral tyres at the same time cannot be detec-
ted 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 halt by braking carefully. Avoid
abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle'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 drive with a heavy load. Tyre pressure
319Wheels and tyres Z

Tyres
SLK 200 Summer tyres
R16
Tyres Light-alloy wheels
BA: 205/5
5 R16 91 V 1 BA: 7.0 J x 16 H2 ET 37.5
BA: 205/55 R16 91 V
1 BA: 7.0 J x 16 H2 ET 38
FA: 205/55 R16 91 V
1
RA: 225/50 R16 92 V 1, 2 FA: 7.0 J x 16 H2 ET 37.5
RA: 8.0 J x 16 H2 ET 33.5
R17
Tyres Light-alloy wheels
FA: 225/45 R17 91 W
3
RA: 245/40 R17 91 W 2, 3, 4 FA: 7.5 J x 17 H2 ET 42
RA: 8.5 J x 17 H2 ET 36
R18
Tyres Light-alloy wheels
FA: 225/40 R18 92 Y XL
5
RA: 245/35 R18 92 Y XL 2, 4, 5 FA: 7.5 J x 18 H2 ET 42
RA: 8.5 J x 18 H2 ET 36
Winter tyres
R16
Tyres Light-alloy wheels
BA: 205/55 R16 91 H M+S
i1 BA: 7.0 J x 16 H2 ET 37.5
BA: 205/55 R16 91 H M+S
i1 BA: 7.0 J x 16 H2 ET 38
R17
Tyres Light-alloy wheels
BA: 225/45 R17 91 H M+S
i2 BA: 7.5 J x 17 H2 ET 42
1
Not in conjunction with Sports Package (Code 950/952).
2 Additional requirements necessary (additional wheel-arch extension on wheel cutout of rear axle).
3 Available as MOExtended tyres.
4 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
5 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. 330
Wheel and tyre combinationsWheels and tyres

SLK 250
Summer tyres
R16
Tyres Light-alloy wheels
BA: 205/55 R16 91 W
1 BA: 7.0 J x 16 H2 ET 38
R17
Tyres Light-alloy wheels
FA: 225/45 R17 91 W
3
RA: 245/40 R17 91 W 2, 3, 4 FA: 7.5 J x 17 H2 ET 42
RA: 8.5 J x 17 H2 ET 36
R18
Tyres Light-alloy wheels
FA: 225/40 R18 92 Y XL
5
RA: 245/35 R18 92 Y XL 2, 4, 5 FA: 7.5 J x 18 H2 ET 42
RA: 8.5 J x 18 H2 ET 36
Winter tyres
R16
Tyres Light-alloy wheels
BA: 205/55 R16 91 H M+Si
1 BA: 7.0 J x 16 H2 ET 38
R17
Tyres Light-alloy wheels
BA: 225/45 R17 91 H M+Si
2 BA: 7.5 J x 17 H2 ET 42
1
Not in conjunction with Sports Package (Code 950/952).
3 Available as MOExtended tyres.
2 Additional requirements necessary (additional wheel-arch extension on wheel cutout of rear axle).
4 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
5 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. Wheel and tyre combinations
331Wheels and tyres Z

SLK 250 CDI
Summer tyres
R16
Tyres Light-alloy wheels
FA: 205/55 R16 91 W
1
RA: 225/50 R16 92 W 1, 2 FA: 7.0 J x 16 H2 ET 37.5
RA: 8.0 J x 16 H2 ET 33.5
FA: 205/55 R16 91 W
1
RA: 225/50 R16 92 W 1 FA: 7.0 J x 16 H2 ET 38
RA: 7.5 J x 16 H2 ET 45.5
R17
Tyres Light-alloy wheels
FA: 225/45 R17 91 W
3
RA: 245/40 R17 91 W 2, 3, 4 FA: 7.5 J x 17 H2 ET 42
RA: 8.5 J x 17 H2 ET 36
R18
Tyres Light-alloy wheels
FA: 225/40 R18 92 Y XL
5
RA: 245/35 R18 92 Y XL 2, 4, 5 FA: 7.5 J x 18 H2 ET 42
RA: 8.5 J x 18 H2 ET 36
Winter tyres
R16
Tyres Light-alloy wheels
BA: 205/55 R16 91 H M+Si
1 BA: 7.0 J x 16 H2 ET 37.5
BA: 205/55 R16 91 H M+Si
1 BA: 7.0 J x 16 H2 ET 38
R17
Tyres Light-alloy wheels
BA: 225/45 R17 91 H M+Si
2 BA: 7.5 J x 17 H2 ET 42
1
Not in conjunction with Sports Package (Code 950/952).
2 Additional requirements necessary (additional wheel-arch extension on wheel cutout of rear axle).
3 Available as MOExtended tyres.
4 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
5 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. 332
Wheel and tyre combinationsWheels and tyres

SLK 350
Summer tyres
R17
Tyres Light-alloy wheels
FA: 225/45 R17 91 W
3
RA: 245/40 R17 91 W 2, 3, 4 FA: 7.5 J x 17 H2 ET 42
RA: 8.5 J x 17 H2 ET 36
R18
Tyres Light-alloy wheels
FA: 225/40 R18 92 Y XL
5
RA: 245/35 R18 92 Y XL 2, 4, 5 FA: 7.5 J x 18 H2 ET 42
RA: 8.5 J x 18 H2 ET 36
Winter tyres
R17
Tyres Light-alloy wheels
BA: 225/45 R17 91 H M+Si
2 BA: 7.5 J x 17 H2 ET 42
SLK 55 AMG
Summer tyres
R18
Tyres Light-alloy wheels
FA: 235/40 ZR18 95 Y XL
RA: 255/35 ZR18 94 Y XL 4, 5 FA: 8.0 J x 18 H2 ET 43
RA: 9.0 J x 18 H2 ET 42
Winter tyres
R18
Tyres Light-alloy wheels
BA: 235/40 R18 95 V XL M+S
i BA: 8.0 J x 18 H2 ET 43
FA: 235/40 R18 95 V XL M+Si
RA: 255/35 R18 94 V XL M+Si 4, 5 FA: 8.0 J x 18 H2 ET 43
RA: 9.0 J x 18 H2 ET 42
3
Available as MOExtended tyres.
2 Additional requirements necessary (additional wheel-arch extension on wheel cutout of rear axle).
4 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
5 Observe notes on "Large wheels" in the "Wheel/tyre combinations" section. Wheel and tyre combinations
333Wheels and tyres Z

Emergency spare wheel
Important safety notes
G
WARNING
The wheel/tyre dimensions and the tyre type of the spare wheel/emergency spare wheel
and the wheel to be replaced may differ. Fit-
ting a spare wheel/emergency spare wheel
may severely impair the driving characteris-
tics. There is a risk of accident.
To prevent hazardous situations:
R Adapt your driving style accordingly and
drive carefully.
R Never fit more than one spare wheel/emer-
gency spare wheel if the dimensions are
different to those of the wheel being
replaced.
R Only use a spare wheel/emergency spare
wheel briefly if the dimensions are different to those of the wheel being replaced.
R Do not switch off ESP ®
.
R Have the spare wheel/emergency spare
wheel in question replaced at the nearest
qualified specialist workshop. Make sure
that the wheel/tyre dimensions and tyre
type are correct.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 80 km/h.
Snow chains must not be fitted to emergency
spare wheels. General notes
You should regularly check the pressure of all your tyres, including the emergency spare
wheel, particularly prior to long trips, and cor-
rect the pressure as necessary (Y page 318).
The applicable value is found on the wheel or
under "Technical data" (Y page 337).
An emergency spare wheel may also be fitted
against the direction of rotation. Observe the time restriction on use as well as the speed limitation specified on the emergency spare
wheel.
Replace the tyres after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
i If you are driving with the collapsible
emergency spare wheel fitted, the tyre
pressure loss warning system or the tyre
pressure monitor cannot function reliably.
Do not restart the tyre pressure loss warn-
ing system/tyre pressure monitor until the
defective wheel has been replaced with a
new wheel.
Vehicles with a tyre pressure monitor:
for a few minutes after an emergency spare wheel is fitted, the system may still display
the tyre pressure of the removed wheel.
The value displayed for the mounted emer-
gency spare wheel is not the same as the
current tyre pressure of the emergency
spare wheel. Removing the emergency spare wheel
(Example)
The collapsible emergency spare wheel can
be found in the stowage well under the boot
floor. X Lift and remove the reversible floor panel in
the boot (Y page 266).
X Turn retaining screw ;anti-clockwise and
remove it.
X Remove collapsible emergency spare
wheel :. 334
Emergency spare wheelWheels and tyres

Technical data
All models (except AMG vehicles) Collapsible emergency spare wheel
6Tyres Light-alloy wheels
145/70-17 92P
Tyre pressure: 350 kPa (3.5 ba
r/51 psi) 4.5 B x 17 H2 ET 12
AMG vehicles
Collapsible emergency spare wheel
6Tyres Light-alloy wheels
175/55-18 95P
Tyre pressure: 350 kPa (3.5 bar/51 psi) 6.0 B x 18 H2 ET 25
Depending on the country, the engine and the wheels fitted, your vehicle may be equipped with
TIREFIT or a collapsible emergency spare wheel.
i The specified tyre pressure is printed in yellow on the emergency spare wheel.
6 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. Emergency spare wheel
337Wheels and tyres Z