The paper presents a method to tune the parameters of the chassis system of
a road vehicle. The method allows both to consider a very high number of p
arameters, and to account for a very high number of driving situations. Add
itionally the method is able to provide useful informations to the designer
because the relationships between performance indexes and design variables
(i.e. system model's parameters) are highlighted. A case study is introduc
ed in which the ride comfort, road holding and handling of a car are improv
ed by applying the presented method. The results coming from simulations ar
e validated with satisfactory results.