A new radial-bias tire structure was proposed，in which the radial structure of carcass cords in the sidewall was changed to bias structure.The characteristics of radial-bias tire and radial tire were analyzed by using finite element model.The results showed that，compared with radial tire，the radial stiffness of radial-bias tire was higher；the strain energy density distribution in sidewall was continuous and relatively uniform，and the maximum strain energy was lower；the lateral ground pressure distribution of tread was more uniform，especially the stress concentration area at the shoulder was smaller，and the footprint was approximately elliptical；the peak value of shear strain at belt edge was smaller.
