Abstract: Due to the asymmetry of tire ground contact characteristics during vehicle roll,it has an important impact on vehicle fuel economy,tire wear,and tire dynamics.Moreover,the ground contact characteristics are very dependent on the shape of the tire contact mark and the accurate distribution of pressure on the mark,while the current calculation model for calculating the pressure value on the ground contact mark when the tire is tilted is not accurate.In response to this issue,this paper establishes a three-dimensional finite element model for 205/55 R16 semi steel radial tire as the research object,studies the factors that affect the accurate acquisition of tire ground contact asymmetry,i.e.,pressure distribution,and builds a two-dimensional ground contact pressure model for the tire under roll conditions.By investigating the influencing factors and laws of pressure distribution under roll conditions,this paper provides a foundation for the intelligent research of tires to accurately obtain the peak adhesion coefficient between tires and pavement under roll conditions.