Virtual prototyping technology has been used to analyze the dynamic characteristics of rubber spring suspension of AD250 articulated dump truck. Multi-body dynamics simulation of the ride comfort has been performed under different velocity and different load. The results of analysis are consistent with experiment results, which shows the correctness of the model. Results indicate that the good and constant ride comfort can be satisfied under different load because of the nonlinear properties of rubber springs of front suspension. Rear suspension system under light load has higher supporting frequency than under deadweight. The results provide a basis for the parameter optimization of rubber spring suspension.