To improve workability and measurement precision by enabling check or the like of wheel alignment of a front two-axle vehicle in such a manner that all wheels of the front two-axle are simultaneously checked.

Distances between a pair of turntable 10, 11, 12, 13 of a first turntable unit 3 and a second turntable unit 4 are made to coincide with the respective tread values of front-front axle wheels and front-rear axle wheels of an inspection object vehicle having steering wheels of front two-axle. By moving the second turntable unit 4, the distance between the first turntable unit 3 and the second turntable unit 4 is made to coincide with the wheel base value between the front-front axle wheels and the front-rear axle wheels of the inspection vehicle. Next, the vehicle is moved onto a pair of turn tables 10, 11, 12, 13 of the first and the second turntable units 3, 4, and the right and the left front-front axle wheels and front-rear axle wheels of the vehicle are mounted. Thereby steering wheels of the vehicle having two-axle steering wheels are simultaneously supported and wheel alignment is measured.