The sideslip angle is the angle between the median plane of a steering wheel subjected to transverse effort (in the case of a cornering or side winding) and the actual travel direction of the vehicle. The sideslip angle always increases with increasing the lateral force at the wheel. A lateral force generates a slip angle, and a sliding angle generates a lateral force. The steering angle generates a sliding angle on the contact patch between the tire and the tread and at the same time creates a lateral force. The sideslip angle is positive if the tire is rotating around the vertical axis to be aligned with the velocity vector (the direction of the vehicle speed). A positive slip angle will generate a negative lateral force. To achieve the purpose of the paper, a simulation program (IPG Carmaker) is used, which defines the driver's behavior, initializes the data for the nature and condition of the running track, the characteristics of the vehicle under study, and chooses a route were the vehicle is running. According to the working methodology, the results obtained will be analyzed and interpreted graphically, surprisingly comparing the various situations considered in the study, with emphasizing the influence of the road conditions and the lateral force on the sideslip angle.