M+S Tires; Breakdown Assistance; Summer Tires - Mercedes-Benz C-Class Operator's Manual

Winter operation
316
For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached.
Treadwear indicators (TWI) are required by
law. Six indicators are positioned on the tire
tread. They are visible once the tread depth
is approximately á in (1.6 mm). If this is the
case, the tire is so worn that it must be
replaced.
Bar indicator : for tread wear is integrated
into the tire tread.
Selecting, mounting and replacing
tires
Only mount tires and wheels of the same
R
type and make.
Exception: it is permissible to install a
different type or make in the event of a flat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics)" section
( page 301).
Y
Only mount tires of the correct size onto
R
the wheels.
After mounting new tires, break them in at
R
moderate speeds for the first 60 miles
(100 km), as they only reach their full
performance after this distance.
Do not drive with tires which have too little
R
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
Replace the tires after six years at the
R
latest, regardless of wear.
Observe the notes on the emergency spare
wheel ( page 346).
Y
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
conjunction 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 in the
event of a flat tire can be found in the
"Breakdown assistance" section
( page 301).
Y
Winter operation
Points to remember
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Changing a wheel"
section ( page 338).
Y
Driving with summer tires
At temperatures below 45 ‡ (+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your
vehicle to M+S tires. Using summer tires at
very cold temperatures could cause cracks to
form, thereby damaging the tires
permanently. Mercedes-Benz cannot accept
responsibility for this type of damage.

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