A method of simulating rolling tire comprises the steps of: modeling the
tire in finite elements to make a tire model which comprises a first
element having a viscoelastic property; modeling a road in finite
elements to make a road model; executing a numerical simulation in which
the tire model is made to roll on the road model at a predetermined
condition; obtaining six kinds of strains in time sequence from the first
element of the tire model with rolling, the six kinds of strains
including three kinds of normal strains along a tire meridian direction,
a tire circumferential direction and a tire thickness direction, and
three kinds of shear strain along the tire meridian direction, the tire
circumferential direction and the tire thickness direction; and
calculating energy loss of the first element based on the six kinds of
the strains.