So, the good news is that I think I found a better way how to tune suspension. What I did for the Tiger is set torsion bar levers and their physics constraint to a 0,0,0 rotation. As I’ve mentioned before, normally that wouldn’t work correctly, so what I did is set Angular Orientation Target to 0, -15, 0 which means we want to keep torsion bar lever at 15 degrees from default position. With a bit of tweaking for the force of the angular drive (I think last number was very small like 10000) it started to behave really nice - smoothly going over the obstacles with just a bit of the sway on the tank hull.
The bad news is that the way how I setup controls using brakes is not even suppose to work correctly - have no idea why it works in T-26, somehow VehicleRightLeft event is called after VehicleForwardBackward event in T-26, but they are called in reverse order in Tiger. The logic there is a bit stupid, but it works in T-26. In RightLeft event I set Brakes to 1.0 if buttons are pressed, in ForwardBackward I set Brakes to 0.0 if Backward button is not pressed, to disable brakes if you are trying to move forward.
I need to think about how to rewrite this properly.