Operation
359
causing the unusual handling characteristics. Observe the notes on the emergency spare
If you find no signs of damage, have the tyres wheel (Y page 389).
and wheels checked at a qualified specialist
workshop.
The service life of tyres depends on various
factors, including the following:
When parking your vehicle, make sure not to
squash the tyre sidewalls. If this cannot be
avoided, drive slowly over obstacles, e.g.
kerbs, and only at an obtuse angle. You could
otherwise damage the wheel rims and tyres.
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driving style
tyre pressure
mileage
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Notes on the tyre tread
Regular checking of wheels and tyres
WARNING
G
Insufficient tyre tread will reduce tyre trac-
tion. The tyre is no longer able to dissipate
water. This means that on wet road surfaces,
the risk of aquaplaning increases, in particular
where speed is not adapted to suit the driving
conditions. There is a risk of accident.
WARNING
G
Damaged tyres can cause tyre inflation pres-
sure loss. As a result, you could lose control of
your vehicle. There is a risk of accident.
Check the tyres regularly for signs of damage
and replace any damaged tyres immediately.
If the tyre pressure is too high or too low, tyres
may exhibit different levels of wear at differ-
ent locations on the tyre tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
width of all tyres.
Check wheels and tyres for damage at least
once a month. Check wheels and tyres after
driving off-road or on rough roads. Damaged
wheels can cause a loss of tyre pressure. Pay
particular attention to damage such as:
Minimum tyre tread depth for:
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cuts in the tyres
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summer tyres: 3 mm
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punctures
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M+S tyres: 4 mm
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tears in the tyres
For safety reasons, replace the tyres before
the legally prescribed limit for the minimum
tyre tread depth is reached.
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bulges on the tyres
deformation or severe corrosion on wheels
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Regularly check the tyre tread depth and the
condition of the tread across the whole width
of the tyre (Y page 359). If necessary, turn
the front wheels to full lock in order to inspect
the inner side of the tyre surface.
Selecting, fitting and replacing tyres
WARNING
G
All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not fit
anything onto the valve other than the stand-
ard valve cap or other valve caps approved for
your vehicle by Mercedes-Benz. Do not fit any
other valve caps or systems, e.g. tyre pres-
sure monitoring systems.
Regularly check the pressure of all the tyres,
particularly prior to long trips. Adjust the tyre
pressure as necessary (Y page 362).
Exceeding the stated tyre load-bearing capa-
city and the approved maximum speed could
lead to tyre damage or the tyre bursting. There
is a risk of accident.
Therefore, only use tyre types and sizes
approved for your vehicle model. Observe the
tyre load rating and speed rating required for
your vehicle.
Pay special attention to country-specific
requirements for tyre approval. These
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