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392 Wheels and tyres
before embarking on a longer journey
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if operating conditions change, e.g. off-
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road driving
Adjust the tyre pressure as necessary.
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Driving with tyre pressure that is too high or too
low can:
Shorten the service life of the tyres.
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Cause increased tyre damage.
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Adversely affect driving characteristics and
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thus driving safety, e.g. due to aquaplaning.
& WARNING Risk of accident from repea‐
ted tyre pressure drop
If the tyre pressure drops repeatedly, the
wheel, valve or tyre may be damaged.
Insufficient tyre pressure can cause the tyres
to burst.
Inspect the tyre for signs of foreign
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objects.
Check whether the wheel or valve has a
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leak.
If you are unable to rectify the damage,
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contact a qualified specialist workshop.
Information on the recommended tyre pressure
for the vehicle's factory-fitted tyres can be found
on the tyre pressure table on the inside of the
fuel filler flap (
page 392).
→
Use a suitable pressure gauge to check the tyre
pressure. The outer appearance of a tyre does
not permit any reliable conclusion about the tyre
pressure.
Vehicles with a tyre pressure monitoring sys‐
tem: you can also check the tyre pressure using
the on-board computer.
Only correct tyre pressures when the tyres are
cold. Conditions for cold tyres:
The vehicle has been parked with the tyres
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out of direct sunlight for at least three hours.
The vehicle has travelled less than 1.6 km.
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A rise in the tyre temperature of 10 °C increases
the tyre pressure by approx. 10 kPa (0.1 bar/
1.5 psi). Take this into account when checking
the tyre pressure of warm tyres.
Tyre pressure table
The tyre pressure table is on the inside of the
fuel filler flap.
The tyre pressure table shows the recommended
tyre pressure for all tyres approved for this vehi‐
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