Winter Operation - Mercedes-Benz C-Class Operator's Manual

Winter operation

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should regularly check the tread depth and
the condition of the tread across the entire
width of all tires.
Minimum tire tread depth for:
Summer tires: â in (3 mm)
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M+S tires: ã in (4 mm)
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For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached.
Marking : shows where the bar indicator
(arrow) for tread wear is integrated into the
tire tread.
Treadwear indicators (TWI) are required by
law. Six indicators are positioned on the tire
tread. They are visible once a tread depth of
approximately á in (1.6 mm) has been
reached. If this is the case, the tire is so worn
that it must be replaced.
Selecting, mounting and replacing
tires
Only mount tires and wheels of the same
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type and make.
Exception: it is permissible to install a dif-
ferent type or make in the event of a flat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics" section
( page 286).
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Only mount tires of the correct size onto
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the wheels.
Break in new tires at moderate speeds for
R
the first 60 miles (100 km). They only reach
their full performance after this distance.
Do not drive with tires which have too little
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tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
Replace the tires after six years at the lat-
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est, regardless of wear.
MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires.
MOExtended tires may only be used in con-
junction with an active tire pressure loss
warning system or with an active tire pressure
monitor and on wheels specifically tested by
Mercedes-Benz.
Notes on driving with MOExtended tires with
a flat tire ( page 286).
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Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit if
you mount tires that do not feature run-flat
properties, e.g. winter tires. A TIREFIT kit can
be obtained from a qualified specialist work-
shop.
Winter operation
General notes
You can find information about this in the
Digital Operator's Manual.
Driving with summer tires
At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your vehi-
cle to M+S tires. Using summer tires at very
cold temperatures could cause cracks to
form, thereby damaging the tires perma-
nently. Mercedes-Benz cannot accept
responsibility for this type of damage.