First read and observe the introductory information
and safety warnings

WARNING
Fitting the removable ball coupling
Hitching and connecting the trailerRun-Flat Tire, General Information
Run-flat tires have a reinforced sidewall in comparison to
standard tires. This reduces the tendency for the sidewall to
roll when there is a loss of pressure and prevents the sides of
the tire from being pinched. This allows the vehicle to be
driven whi ...
Tire Service Life, Influences
The following factors influence the service life of a tire
in varying degrees.
Driving style:
Speed
Brakes
Acceleration
Cornering
...
13-Pin« Trailer Socket
The backup lamps, »continuous current«
and charging cable can be used on the trailer with the
»13-pin« trailer socket. A
»13-pin« trailer socket is
recommended if a bicycle rack will be installed or a camper will
be towed.
  ...