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  • S-Class
  • Saloon
  • 08/2021
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Notes on tyre pressure
WARNING Risk of accident due to insufficient or excessive tyre pressure
Underinflated or overinflated tyres pose in particular the following risks:
  • The tyres can burst.

  • The tyres can wear excessively and/or unevenly.

  • The driving characteristics as well as the steering and braking characteristics may be greatly impaired.

Comply with the recommended tyre pressure and check the tyre pressure of all tyres, including the spare wheel, regularly:
  • monthly

  • when the load changes

  • before embarking on a longer journey

  • if operating conditions change, e.g. off-road driving

Adjust the tyre pressure, if necessary.
Tyre pressure which is too high or too low can:
  • Shorten the service life of the tyres.

  • Cause increased tyre damage.

  • Adversely affect driving characteristics and thus driving safety, e.g. due to aquaplaning.

WARNING Risk of accident due to repeated pressure drop in the tyres

The wheels, valves or tyres could be damaged.

Too low a tyre pressure can lead to the tyres bursting.

Examine the tyres for foreign objects.
Check whether the tyre has a puncture or the valve has a leak.
If you are unable to rectify the damage, 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 More.

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.

Only correct tyre pressures when the tyres are cold. Conditions for cold tyres:
  • The vehicle has been parked with the tyres out of direct sunlight for at least three hours.

  • The vehicle has travelled less than 1.6 km.

The vehicle's tyres heat up when driving. As the temperature of the tyres increases, so too does the tyre pressure.

Vehicles with a tyre pressure monitoring system: you can also see the tyre pressure in the driver's display.

Notes on trailer operation

Always inflate the rear axle tyres to the recommended tyre pressures on the tyre pressure table for increased load.