Abstract
An analytical method was developed to compare the effects of vertical spring of suspension, dumping force, height of the center of gravity, roll-center height, roll steer, and initial toe angle to the easiness to change direction, by introducing the lateral displacement of the tire contact point relative to the center of gravity according to the roll movement, into the dynamic equation that was reported in the previous paper. This paper introduces the analytical method and presents samples of the effects of those factors to the easiness to change direction.