The essentials
●
the wheel condition and hub mounting surfa-
ces. These surfaces must be clean before fit-
ting the wheel.
Return all tools to their proper storing loca-
If there is a danger of being trapped despite
having mounted the chains, it is best to disa-
ble the driving wheels (ASR) in the ESC
››› page 247, Switching on/off the ESC
and ASR.
tion.
●
If the replaced wheel does not fit in the
spare wheel housing, store it safely in the lug-
gage compartment
››› page 164.
Tyres with compulsory direction of
rotation
Snow chains will improve braking ability as
well as traction in winter conditions.
●
Check the tyre pressure of the newly moun-
ted tyre as soon as possible.
In vehicles fitted with a tyre pressure indica-
●
For technical reasons snow chains may only
be used with the following wheel rim/tyre
combination.
A directional tread pattern can be identified
by the arrows on the sidewall that point in the
direction of rotation. Always observe the di-
rection of rotation indicated when fitting the
wheel to guarantee optimum properties of
this type of tyres with regard to grip, noises,
wear and aquaplaning.
tor, adjust the pressure and store the reading
in the radio/Easy Connect system*
››› page 336.
195/65 R15
●
Have the tightening torque of the wheel
Chains with links of maximum 15 mm
205/55 R16
bolts checked as soon as possible with a tor-
que wrench (it should be 120 Nm). Meanwhile,
drive carefully.
225/45 R17
Chains with links of maximum 9 mm
225/40 R18
If it is absolutely necessary to fit the spare
tyre* against the direction of rotation, drive
with care as this means the tyre does not of-
fer optimum driving properties. This is of par-
ticular importance when the road surface is
wet.
●
Have the flat tyre replaced as quickly as
possible.
Remove wheel covers and any integral trim
ring before fitting snow chains.
Remove the chains when roads are free of
snow. Driving characteristics worsen, and the
wheels become damaged quickly and may
even be rendered unusable.
Snow chains
To return to directional tread tires, replace the
punctured tyre as soon as possible and re-
store the obligatory direction of rotation of all
tyres.
Use
Snow chains should only be used on the front
wheels.
Check that they are correctly seated after
driving for a few yards; correct the position if
necessary, in accordance with the manufac-
turer's fitting instructions. Keep your speed
below 50 km/h (30 mph).
Subsequent work
●
Alloy wheels: replace the wheel bolt caps.
●
Plate wheels: replace the wheel hubcap
page 54.
›››
57
English 
