2014 MERCEDES-BENZ SLK-CLASS ROADSTER snow chains

Use M+S tires of the same make and tread on
all wheels to maintain safe handling
characteristics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
When you have mounted M+S tires:
X Check the tire pressures (Y page 313).
X Vehicles for USA: restart the tire pressure
monitor (Y page 314).
X Vehicles for Canada: restart the tire
pressure loss warning system
(Y page 314).
For more information on driving with the
emergency spare wheel, see (Y page 337).Snow chains
G
WARNING
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.
To avoid hazardous situations:
R never install snow chains to the front
wheels
R always install snow chains in pairs to the
rear wheels.
! You must drive at raised vehicle level
(level 1) if snow chains have been mounted.
The vehicle may otherwise be damaged.
! On some tire sizes there is not enough
space for snow chains. To avoid damage to
the vehicle or tires, observe the "Wheel and
tire combinations" section under "Tires and
wheels".
! Vehicles with steel wheels: if you wish
to mount snow chains on steel wheels,
make sure that you remove the respective
wheels' hubcaps first. The hubcaps may
otherwise be damaged. For safety reasons, Mercedes-Benz
recommends that you only use snow chains
that have been specially approved for your
vehicle by Mercedes-Benz, or are of a
corresponding standard of quality.
If you intend to mount snow chains, please
bear the following points in mind:
R
Snow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (Y page 333).
R Only use snow chains when driving on
roads completely covered by snow.
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
regulations if you wish to install snow
chains.
R Do not exceed the maximum permissible
speed of 30 mph (50 km/h).
i You may wish to deactivate ESP ®
when
pulling away with snow chains installed
(Y page 62). You can thereby allow the
wheels to spin in a controlled manner,
achieving an increased driving force
(cutting action).
For more information on driving with the
emergency spare wheel, see (Y page 337). Winter operation
309Wheels and tires Z

when adjusting the tire pressure
(Y
page 310).
i The actual values for tires are vehicle-
specific and may deviate from the values in
the illustration. Checking the tire pressures
Important safety notes Observe the notes on tire pressure
(Y
page 310).
Information on air pressure for the tires on
your vehicle can be found:
R on the vehicle's Tire and Loading
Information placard on the B-pillar
(Y page 317)
R on the tire pressure label on the fuel filler
flap ( Ypage 157)
R in the "Tire pressure" section
Checking tire pressures manually To determine and set the correct tire
pressure, proceed as follows:
X Remove the valve cap of the tire that is to
be checked.
X Press the tire pressure gauge securely onto
the valve.
X Read the tire pressure and compare it with
the recommended value on the Tire and
Loading Information placard (Y page 310).
X If the tire pressure is too low, increase it to
the recommended value.
X If the tire pressure is too high, release air
by pressing down the metal pin in the valve.
Use the tip of a pen, for example. Then,
check the tire pressure again using the tire
pressure gauge.
X Screw the valve cap onto the valve.
X Repeat these steps for the other tires. Tire pressure loss warning system
(Canada only)
General notes While the vehicle is in motion, the tire
pressure loss warning system monitors the
set tire pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tire. 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
display.
You can recognize the tire pressure loss
warning by the Run Flat Indicator Run Flat Indicator
Active Press 'OK' to Restart
Active Press 'OK' to Restart message
which appears in the Service
Servicemenu of the
multifunction display. Information on the
message display can be found in the
"Restarting the tire pressure loss warning
system" section (Y page 314).
Important safety notes The tire pressure warning system does not
warn you of an incorrectly set tire pressure.
Observe the notes on the recommended tire
pressure (Y
page 310).
The tire pressure loss warning does not
replace the need to regularly check the tire
pressure. An even loss of pressure on several
tires at the same time cannot be detected by
the tire pressure loss warning system.
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the
tire 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 maneuvers.
The function of the tire pressure loss warning
system is limited or delayed if:
R snow chains are mounted on your vehicle's
tires.
R road conditions are wintry.
R you are driving on sand or gravel. Tire pressure
313Wheels and tires Z

Tires
SLK 250 Summer tires
R17
Tires Alloy wheels
FA: 225/4
5 R17 91 W 5
RA : 245/40 R17 91 W 5, 6 FA: 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
RA: 8.5 J x 17 H2
Wheel offset: 1.42 in (36 mm)
R18
Tires Alloy wheels
FA: 225/40 R18 92 Y XL
RA: 245/35 R18 92 Y XL
6 FA: 7.5 J x 18 H2
Wheel offset: 1.65 in (42 mm)
RA: 8.5 J x 18 H2
Wheel offset: 1.42 in (36 mm)
Winter tires
R17
Tires Alloy wheels
BA: 225/45 R17 91 H M+S
i5 BA: 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
SLK 350
Summer tires
R17
Tires Alloy wheels
FA: 225/45 R17 91 W
5
RA: 245/40 R17 91 W 5, 6 FA: 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
RA: 8.5 J x 17 H2
Wheel offset: 1.42 in (36 mm)
5
Also available as MOExtended tires.
6 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. Wheel and tire combinations
335Wheels and tires Z

R18
Tires Alloy wheels
FA: 225/40 R18 92 Y XL
RA: 245/35 R18 92 Y XL
6 FA: 7.5 J x 18 H2
Wheel offset: 1.65 in (42 mm)
RA: 8.5 J x 18 H2
Wheel offset: 1.42 in (36 mm)
Winter tires
R17
Tires Alloy wheels
BA: 225/45 R17 91 H M+S
i5 BA: 7.5 J x 17 H2
Wheel offset: 1.65 in (42 mm)
SLK 55 AMG
Summer tires
R18
Tires Alloy wheels
FA: 235/40 ZR18 95 Y XL
RA: 255/35 ZR18 94 Y XL
6 FA: 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm)
RA: 9.0 J x 18 H2
Wheel offset: 1.65 in (42 mm)
Winter tires
R18
Tires Alloy wheels
BA: 235/40 R18 95 V XL M+S
i BA: 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm)
FA: 235/40 R18 95 V XL M+S
i
RA: 255/35 R18 94 V XL M+S i6 FA: 8.0 J x 18 H2
Wheel offset: 1.69 in (43 mm)
RA: 9.0 J x 18 H2
Wheel offset: 1.65 in (42 mm)
6
Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
5 Also available as MOExtended tires. 336
Wheel and tire combinationsWheels and tires

Emergency spare wheel
Important safety notes
G
WARNING
The wheel or tire size as well as the tire type
of the spare wheel or emergency spare wheel
and the wheel to be replaced may differ.
Mounting an emergency spare wheel may
severely impair the driving characteristics.
There is a risk of an accident.
To avoid hazardous situations:
R adapt your driving style accordingly and
drive carefully.
R never mount more than one spare wheel or
emergency spare wheel that differs in size.
R only use a spare wheel or emergency spare
wheel of a different size briefly.
R do not switch ESP ®
off.
R have a spare wheel or emergency spare
wheel of a different size replaced at the
nearest qualified specialist workshop.
Observe that the wheel and tire dimensions
as well as the tire type must be correct.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 50 mph
(80 km/h).
Snow chains must not be mounted on
emergency spare wheels. General notes
You should regularly check the pressure of
the emergency spare wheel, particularly prior
to long trips, and correct the pressure as
necessary (Y page 310). The applicable value
is found on the wheel or under "Technical
data" ( Ypage 340).
An emergency spare wheel may also be
mounted 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 tires after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
i
When you are driving with the collapsible
spare wheel mounted, the tire pressure
loss warning system or the tire pressure
monitor cannot function reliably. Only
restart the tire pressure loss warning
system/the tire pressure monitor when the
damaged wheel has been replaced with a
new wheel.
Vehicles with tire pressure monitor:
after mounting an emergency spare wheel,
the system may still display the tire
pressure of the removed wheel for a few
minutes. The value displayed for the
mounted emergency spare wheel is not the
same as the current tire pressure of the
emergency spare wheel. Removing the emergency spare wheel
(Example)
The collapsible spare wheel can be found in
the stowage well under the trunk floor.
X
Lift and remove the reversible floor panel
in the trunk (Y page 256).
X Turn retaining screw ;counter-clockwise
and remove it.
X Remove collapsible spare wheel :. Emergency spare wheel
337Wheels and tires Z

Technical data
All models (except for AMG vehicles) Collapsible emergency spare wheel
7Tires Alloy wheels
145/70-17 92 P
Tire pressure: 350 kPa (3.5 bar/51 psi) 4.5 B x 17 H2
Wheel offset: 0.47 in (12 mm)
AMG vehicles
Collapsible spare wheel
Tires Alloy wheels
175/55 - 18 95P
Tire pressure: 350 kPa (3.5 bar/51 psi) 6.0 B x 18 H2
Wheel offset: 0.98 in (25 mm)
Depending on the country, the engine and the wheels mounted, your vehicle may be equipped
with TIREFIT or a collapsible spare wheel.
i The specified tire pressure is printed in yellow on the emergency spare wheel.
7 Use of snow chains is not permitted. Observe the notes in the section on snow chains. 340
Emergency spare
wheelWheels and tires