The calculations in the data sheets of rollover stability and the basic data have been checked by
TÜV SÜD - Automotive GmbH
and approved by the Dutch approval authority RDW. The data are updated at regular intervals and current calculations are carried out if required.
The body manufacturer is obliged to ascertain about the current status of the data sheets before starting to work on the body.
The basis for the verification to ECE-R111 is the data sheet valid at the time the work on the body starts.
For planning the body and for registration it is important to note that the data sheets only contain a limit curve. This limit curve is calculated with a standard chassis and the standard tyres.
This means that if a body's dimensions lead to a curve just slightly below the limit curve, the criteria for rollover stability can be safely fulfilled by changing the tyres to a smaller size.
In case of changing the tyres to a larger size the rollover stability has to be verified completely new.
The rollover stability to ECE-R111 for semitrailer tractors is calculated only in combination with the tanker semitrailer.
The calculation bases for this are only the fifth-wheel load and the rear axle track width.
The permissible fifth-wheel load can be found in the vehicle papers or on the factory plate.
The track width can be found on the chassis drawing (see MANTED.de) or measured directly on the truck.