Method of simulating rolling tires

A method of simulating a tire rolling on a road is disclosed, the simulation method comprising the steps of: modeling the tire in finite elements to make a tire model; modeling the surface of the road in finite elements to make a road model; executing a simulation in which the tire model is made to roll on the road model at a predetermined speed; and obtaining information about the tire model; the speed of the tire model being varied by repeating an increase and a decrease based on a predetermined reference speed. It is an object of the present invention to provide a method of simulating rolling tire capable of reducing a peak vibration component (noise) dependent on the number of elements of a tire model from an analysis result.