Winter Operation; Snow Chains - Mercedes-Benz 2015 GLK Operator's Manual

M+S tires
G WARNING
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 ã in
(4 mm) must be replaced immediately.
At temperatures below 45 ‡ (+7 †), use win-
ter tires or all-season tires. Both types of tire
are identified by the M+S marking.
Only winter tires bearing the i snowflake
symbol in addition to the M+S marking pro-
vide the best possible grip in wintry road con-
ditions. Only these tires will allow driving
safety systems such as ABS and ESP
function optimally in winter. These tires have
been developed specifically for driving in
snow.
Use M+S tires 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 tires you have
mounted.
When you have mounted M+S tires:
Check the tire pressures (
X
Restart the tire pressure monitor
X
( page 339).
Y
For more information on driving with the
emergency spare wheel, see (

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
R
! On some tire sizes there is not enough
! Vehicles with steel wheels: if you
®
to
For safety reasons, Mercedes-Benz recom-
mends 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
R
page 339).
Y
R
page 366).
Y
R
i
For more information on driving with the
emergency spare wheel, see (

Winter operation

never install snow chains to the front
wheels
always install snow chains in pairs to the
rear wheels.
space for snow chains. To avoid damage to
the vehicle or tires, observe the "Wheel and
tire combinations" section under "Tires and
wheels".
mount snow chains on steel wheels, you
may damage the hub caps. Remove the hub
caps from the relevant wheels before
mounting the snow chains.
Snow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (
Only use snow chains when driving on
roads completely covered by snow.
Remove the snow chains as soon as possi-
ble when you come to a road that is not
snow-covered.
Local regulations may restrict the use of
snow chains. Observe the appropriate reg-
ulations if you wish to mount snow chains.
Do not exceed the maximum permissible
speed of 30 mph (50 km/h).
You may wish to deactivate ESP
( page 71) when pulling away with snow
Y
chains installed. You can thereby allow the
wheels to spin in a controlled manner, ach-
ieving an increased driving force (cutting
action).
335
page 360).
Y
®
page 366).
Y
Z