Abstract: A toe angle adjusting method is a method wherein the toe angle of the rear wheels is adjusted for only one of the rear wheels, and the toe angle adjustment for the front wheels is performed subsequent to adjustment for the rear wheels. The toe angle adjustment for the front wheels is based on a composite angle of the rear wheels, or a forward direction, decided by a relative relationship between the rear wheels. The toe angle adjustment for the front wheels includes adjustment of a toe angle for the front wheels and a horizontal adjustment of the steering wheel to a horizontal position or neutral state. The toe angle of the front wheels is adjusted in a state when the front wheels are turned, and the horizontal adjustment for the steering wheel is performed by adjusting a tire angle of the front wheels. The toe angle adjustment for the front wheels is implemented on the basis of a forward advancing direction of the vehicle. This direction is determined on the basis of the relationship between the rear wheels.