Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation.
i
An emergency spare wheel* may also be
fitted against the direction of rotation.
Tyre tread
G
Risk of accident
Bear in mind that:
R
tyre grip decreases rapidly on wet roads
when the tread depth is less than 3 mm.
Thus, you should replace tyres that have
insufficient tread.
R
winter tyres should be replaced when the
tread depth is 4 mm or less as they will no
longer provide adequate grip.
R
the tread on a tyre may not wear evenly.
Thus, you should regularly check the tread
depth and the condition of the tread across
the entire width of all tyres. If necessary,
turn the steering wheel so that you can see
the tyre tread more easily.
Otherwise, you could lose control of the vehi-
cle and cause an accident due to the reduced
grip of the tyres on the road.
Tyre pressures
i
You will find a table of tyre pressures for
various operating conditions on the inside
of your vehicle's fuel filler flap.
The valid value for the "Minispare" emer-
gency spare wheel* is stated on the spare
wheel and in the technical data section.
G
Risk of accident
Tyre pressure that is either too high or too low
has a negative effect on the vehicle’s driving
safety, which could lead you to cause an acci-
dent. Therefore, you should regularly check
the pressure of all the tyres, particularly prior
to long trips, and correct the pressure as nec-
essary.
To test tyre pressure, use a suitable pressure
gauge. The outer appearance of a tyre does
not permit any reliable conclusion about the
tyre pressure.
G
Risk of accident
Should the tyre pressure drop repeatedly:
R
check the tyre for foreign bodies.
R
check whether the wheel is losing air or the
valve is leaking.
R
make sure that only a valve cap approved
by Mercedes-Benz has been fitted on the
tyre valve.
Tyre pressure that is too low has a negative
effect on the vehicle’s active safety, which
could lead to your causing an accident.
If possible, you should only correct tyre pres-
sures when the tyres are cold. Depending on
the ambient temperature, the speed you are
driving at and the load on the tyres, the tyre
temperature and thus the tyre pressure may
change by approximately 0.1 bar per 10 °C.
Take this into account when checking the
pressure of warm tyres and only correct it if
it is too low for the current operating condi-
tions.
Driving with tyre pressure that is too high or
too low can:
R
shorten the service life of the tyres
R
increase the likelihood of tyre damage
R
have a negative effect on handling charac-
teristics (e.g. by causing aquaplaning)
152
Tyres and wheels
Op
er
at
ion
* optional
X204_AKB; 1; 5, en-GB
wobuchh,
Version: 2.11.4
2008-10-15T13:20:56+02:00 - Seite 152
Dateiname: 6515_0671_02_buchblock.pdf;
preflight
