An apparatus for determining balancing information of an object in rotation comprises
a base, an arm, a spindle, at least one force sensor, a rolling road, a controller,
and an actuator. The arm is rotatably connected to the base about a pivot axis.
The spindle is positioned on the arm and receives and rotates the object. The force
sensor detects forces generated by the object during rotation of the object. The
rolling road includes a surface upon which the object can be positioned. The controller
receives force information from the sensor and calculates the balancing information
from the force information. An actuator connected to both the arm and the base
moves with the movement being controlled by the controller. The object can be a wheel.
