Important Safety Notes - Mercedes-Benz Unimog Operating Instructions Manual

Tyre pressure
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may prescribe a certain type of tyre for your
vehicle. In addition, the use of specific tyre
types may be advisable for certain regions
and areas of operation. A tyre dealer, a quali-
fied specialist workshop or any Mercedes-
Benz Service Centre will be able to provide
further information.
Replacing tyres
If replacing the standard tyres of your vehicle,
use only the tyre and wheel sizes approved for
your vehicle type. A tyre dealer or a qualified
specialist workshop will be able to provide
further information.
After changing the tyres, always carry the
operating permit for the new tyre and wheel
size as well as the manufacturer's certifica-
tion indicating that the wheel/tyres are per-
missible for use on the vehicle. The speed-
ometer will also require adjustment. Observe
the relevant legal requirements for each
country. Any Mercedes-Benz Service Centre
can provide information on obtaining a man-
ufacturer's certificate.
Retreaded tyres
Mercedes-Benz recommends that you only
use tyres and wheels which have been tested
and approved by Mercedes-Benz specifically
for your vehicle.
Tyre pressure

Important safety notes

G
WARNING
Tyres with insufficient or excessive tyre pres-
sure harbour the following hazards:
the tyres may burst, especially as the load
R
and vehicle speed increase.
the tyres may wear excessively or unevenly
R
which can severely impair tyre traction.
the handling as well as steering and braking
R
characteristics may be severely affected.
There is a risk of an accident.
Observe the recommended tyre pressures
and check the tyre pressure of all the tyres
including the spare wheel:
every day before starting a journey
R
when the load changes
R
prior to long journey
R
for changed operating conditions, e.g. off-
R
road driving
If necessary, correct the tyre pressure.
G
WARNING
The tyre temperature and pressure increase
when the vehicle is in motion. Reducing the
pressure of warm tyres leads to a tyre pres-
sure that is too low when the tyres have
cooled. If the tyre pressure is too low, it may
cause the tyre to burst, especially when the
load or speed increases. There is a risk of an
accident.
You should never reduce the pressure of
warm tyres. Observe the specified tyre pres-
sure.
! An increase/decrease of 10 † in air tem-
perature increases/reduces tyre pressure
by approximately 0.2 bar. Remember this
pressure change - particularly in winter -
when checking tyre pressures, e.g. in a
garage.
Example:
The room temperature in the garage is
approximately 20 †.
The outside temperature is approximately
0 †.
Adjust the tyre pressure so it is approx-
imately 0.4 bar higher than indicated in the
tyre pressure table.
When you leave the garage, the tyre pres-
sure drops by approximately 0.4 bar.