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Tyre pressure
356
Always observe the maximum permissible
speed specified for the M+S tyres you have fit-
ted.
If you fit M+S tyres that have a lower maximum
permissible speed than that of the vehicle, affix
an appropriate 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 type-tested maximum speed of the
vehicle using permanent SPEEDTRONIC so that
it does not exceed the maximum permissible
speed for the M+S tyres (
When you have fitted the M+S tyres:
Check the tyre pressures (
X
Restart the tyre pressure monitor
X
(
page 360).
Y
Information on driving with an emergency spare
wheel (
page 367).
Y
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:
never fit snow chains on the front wheels
R
fit snow chains to the rear wheels in pairs.
R
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specifically approved for your vehicle by
Mercedes-Benz, or that are of a corresponding
standard of quality. For more information,
please contact a qualified specialist workshop.
If you intend to fit snow chains, please bear the
following points in mind:
snow chains cannot be fitted to all wheel-tyre
R
combinations. Permissible wheel-tyre combi-
nations (
page 366).
Y
only use snow chains if the road surface is
R
completely snow-covered. Remove the snow
chains as soon as possible when you come to
a road that is not snow-covered.
page 184).
Y
page 356).
Y
local regulations may restrict the use of snow
R
chains. Observe the appropriate regulations if
you wish to fit snow chains.
do not exceed the maximum permissible
R
speed of 50 km/h.
on vehicles with AIRMATIC, you must drive at
R
raised vehicle level if snow chains have been
fitted (
page 195).
Y
when snow chains are fitted, never use Active
R
Parking Assist (
page 201).
Y
You may wish to deactivate ESP
away with snow chains fitted:
all vehicles (except Mercedes‑AMG vehicles)
R
(
page 72)
Y
Mercedes-AMG vehicles (
R
This way you can allow the wheels to spin in a
controlled manner, achieving increased driving
force (cutting action).
Information about driving with an emergency
spare wheel (
page 367).
Y
Tyre pressure
Tyre pressure specifications
G
WARNING
Underinflated or overinflated tyres pose the
following risks:
the tyres may burst, especially as the load
R
and vehicle speed increase.
the tyres may wear excessively and/or
R
unevenly, which may greatly impair tyre
traction.
the driving characteristics, as well as steer-
R
ing and braking, may be greatly impaired.
There is a risk of an accident.
Observe the recommended tyre pressure and
check the tyre pressure of all the tyres includ-
ing the spare wheel:
at least every two weeks
R
when the load changes
R
before embarking on a longer journey
R
for changed operating conditions, e.g. off-
R
road driving
If necessary, correct the tyre pressure.
®
when pulling
page 73)
Y
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