I wondered if you ever found a solution. I am working on a 6 wheeled vehicle. My issue is the front wheels and rear right set and rear left set of wheels are attached to their own pivoting arm. This is a recreation of a toy that simulated suspension through pivoting arms. Think of something like the Mars rovers. I got it kiiiind of working back on UE 4 where one of the rear wheel sets just freewheeled. The motions looked “OK” but when steering, the front pivot point went super weird. The method is just not compatible with Chaos wheels.