The maneuvering device (6) has a drive motor, and a drive roller (7) provided in a driving position in the tread of the tire (9) of the vehicle. The drive roller can be brought into contact with the tire surface for transmitting the driving torque of drive motor to the tire. The circumferential surface of the rotation axis (R) of tire is set closer to the axial center of an offset point of tire which is formed at a larger radial distance to the rotation axis and the other offset points of tire.
