Trends and market forecasts assume, that 6- an 8-wheel-machines become more and more relevance in the forest for the future. And they all use the tandem-axles. Due to their geometry the axles produce driving torques with unwanted erecting-effects. With the RaLaReg, Welte Fahrzeugbau GmbH and the Albert-Ludwigs-University of Freiburg developed a workable solution.