 Road transport is essential for the movement of goods and people, and its efficient functioning is crucial for the national economy. When vehicles are overloaded, the suspension systems can fail, causing disruptions to supply chains. This paper examined the effects of such a failure by using mathematical models and FEM simulations. The results showed that the highest stresses occur at the critical point on highways, while they increase significantly on uneven roads. However, the probability of such a load and failure event occurring is low under normal operating conditions. This article was authored by Zivile Decker, Jereja Strechikova's, Kazimierz Drozd, and others.