Operation
368
Check the tyres regularly for signs of damage
ent locations on the tyre tread. Thus, you
and replace any damaged tyres immediately.
should regularly check the tread depth and
the condition of the tread across the entire
Check wheels and tyres for damage at least
width of all tyres.
once a month. Check wheels and tyres after
Minimum tyre tread depth for:
driving off-road or on rough roads. Damaged
wheels can cause a loss of tyre pressure.
R summer tyres: 3 mm
Pay particular attention to damage such as:
R M+S tyres: 4 mm
R cuts in the tyres
For safety reasons, replace the tyres before
R punctures
the legally prescribed limit for the minimum
R tears in the tyres
tyre tread depth is reached.
R bulges on the tyres
R deformation or severe corrosion on the
wheels
Selecting, fitting and replacing tyres
Regularly check the tyre tread depth and the
G WARNING
condition of the tread across the whole width of
all tyres ( Y page 368). If necessary, turn the
Exceeding the stated tyre load-bearing capa-
front wheels to full lock to make it easier to
city and the approved maximum speed could
inspect the inner side of the tyre surface.
lead to tyre damage or the tyre bursting. There
All wheels must have a valve cap to protect the
is a risk of accident.
valve against dirt and moisture. Do not fit any-
thing onto the valve other than the standard
Therefore, only use tyre types and sizes
valve cap or other valve caps specially approved
approved for your vehicle model. Observe the
for your vehicle by Mercedes-Benz. Do not fit
tyre load rating and speed rating required for
any other valve caps or systems, e.g. tyre pres-
your vehicle.
sure monitors.
Wheels and tyres
Check the pressure of all tyres regularly as well
Pay special attention to country-specific
as prior to long trips. Adjust the tyre pressures
requirements for tyre approval. These require-
as necessary ( Y page 370).
ments may stipulate a specific tyre type for your
Observe the notes on the emergency spare
vehicle. Furthermore, the use of a specific tyre
wheel ( Y page 380).
type in certain regions and areas of operation
The service life of tyres depends on various fac-
can be highly beneficial. You can find further
tors, including the following:
information regarding tyres at specialist tyre
retailers or qualified specialist workshops.
R driving style
R Use only tyres and wheels of the same type
R tyre pressure
and make.
R mileage
Exception: it is permissible to fit a different
type or make in the event of a flat tyre.
Observe here the "MOExtended tyres (tyres
Notes on the tyre tread
with run-flat characteristics)" section
( Y page 352).
G WARNING
R Fit only tyres of the correct size onto the
Insufficient tyre tread will reduce tyre trac-
wheels.
tion. The tyre is no longer able to dissipate
R Run in new tyres at moderate speeds for the
water. This means that on wet road surfaces,
first 100 km. They reach their full perform-
ance only after this distance.
the risk of aquaplaning increases, in particular
where speed is not adapted to suit the driving
R Do not drive with tyres that have too little
tread depth. This significantly reduces trac-
conditions. There is a risk of accident.
tion on wet roads (aquaplaning).
If the tyre pressure is too high or too low, tyres
R Replace the tyres after six years at the latest,
may exhibit different levels of wear at differ-
regardless of wear.
English 
