Abstract
The increasingly growing demand for more comfortable cars imposes a new way for dynamic analysis of the guiding axle linkages, with elaboration of models that are closer to the real mechanisms on the car. Involving the joints elasticity, the degree of freedom of the suspension system is increasing, so that it is necessary to use mechanical systems analysis software MBS. In paper, the study of the joints deformations on the dynamic behavior of the car is made, considering the guiding linkages of Romanian cars DACIA and ARO, by using the MBS software DYMES (NISA EMRC).