a first load sensor for generating a first load signal based on a first vehicle load;

a first position sensor for generating a first position signal based on a position of a vehicle axle mounted on a trailer slider which is slidable to a plurality of positions forwardly and rearwardly along a vehicle trailer, the position of the vehicle axle being a position along an axis between a forward and rearward position of the vehicle trailer;

a second position sensor for generating a second position signal based on a position of a vehicle kingpin;

a memory unit storing optimization data;

an evaluation unit in communication with said first load sensor, said first position sensor, said second position sensor and said memory unit;

a general user interface for receiving an input relating to a request for optimizing vehicle performance and load distribution, said general user interface in communication with said evaluation unit; and

wherein said evaluation unit makes an evaluation of said first load signal, said first position signal, said second position signal, and said input and generates an optimization instruction relating to a distance between said vehicle axle and said vehicle kingpin, and said optimization instruction being a desired position of the trailer slider moved along the axis between forward and rearward positions relative to the vehicle trailer.