The aim is to analyze and postprocess the data, obtained through previous experimental tests done on shock absorbers of a 1:5 scale model car using oils of several viscosities and imposing different piston displacements, by creating a damping model that considers these data. It is therefore necessary to post-process the information to identify the non-linear characteristics of the shock absorbers. The preliminary analysis consists of examining only two tests with two oils of different viscosity at equal displacement to find the damping characteristic and see the main differences on a small scale. Then, the analysis extends to all other data, making considerations about comparisons between front and rear case at the same viscosity for different displacements and at the same displacement for different viscosities..