# Hinge joint annoying wheels rotation in Unity

I try to made a little skate game prototype in Unity 5 and I just encountered an issue. I added a hinge joint between the board and each of the wheels couples (front and behind) so the board can move forward. My problem is that when I try to rotate a wheels couple around the red axis (see picture below), the hinge joint seems to hindered the rotation, however I'm not sure. Is someone see how to do the trick ?

Here is a sample of my source code (0 index is the front couple of wheels, 1 is the behind) :

private void Turn(float hAxis) {
wheelsTransform[0].Rotate (wheelsTransform[0].right * hAxis * turnAngle * Time.deltaTime, Space.Self);
wheelsTransform[1].Rotate (wheelsTransform[1].right * hAxis * -turnAngle * Time.deltaTime, Space.Self);
}