Frame height definition
Frame height means the vertical distance between the ground and the lowest point on the frame. The distance is measured when the vehicle is unladen and on a level surface.
Frame height means the vertical distance between the ground and the lowest point on the frame, measured when the vehicle is unladen on a level surface at the lowest point on the frame midway between the front axle and the second axle on the vehicle with the vehicle tires inflated to the manufacturer's recommended pressure.
Frame height means distance of wheel center to top of horizontal frame in Z.