Tire lateral hysteresis work testing method and testing device

The invention provides a tire lateral hysteresis work testing method and testing device. The tire lateral hysteresis work testing method comprises the following operation steps: preheating a tire; setting a test program: setting the steel belt speed, the slip angle and the roll angle of the tire on the six-component testing machine; a test step: a tire support load is set, a tire roll angle is set to be 0 deg, a deflection angle sweep frequency test is carried out according to a test program, and the test is divided into tire left steering and tire right steering; data processing: performing least square fitting on the left steering data and the right steering data through a magic formula; on the premise that the tire is subjected to experimental operation through a six-component testing machine, a magic formula and a ladder rule are introduced, the tire lateral force is subjected to least square method data fitting through the magic formula, and a calculation formula of the tire lateral hysteresis work is ob