VARIABLE WHEELBASE TYPE VEHICLE

[Problem to be Solved] A vehicle having an adjustable wheel base is provided with a linking mechanism that links a change in the wheel base to the inclination of the vehicle seat. [Means for Solving the Problem] The front wheels FW of the vehicle 1 having an adjustable wheel base are joined to the front portion of a main frame 2, on which a vehicle seat SV is mounted. The upper ends of a pair of rotating arms 4 are rotatably joined to locations of the main frame 2 farther toward the rear than the front portion. The lower ends of the rotating arms 4 are rotatably joined to the rear wheels RW, and the upper arms 8 and the lower arm 73 are provided rotatably connected together such that the main frame 2 and the rear wheels RW are joined at the back of the rotating arms 4. The operating portion 62 of the operating apparatus 6, on which the main frame 2 is installed, is joined via the operating links 5 to the rotating arms 4, and by operating the operating apparatus 6, the rotating arms 4 are rotated by the operating links 5, the rear wheels RW are moved with respect to the front wheels FW, the wheel base is changed, and simultaneously, the inclination of the main frame 2 is changed.