Game engine relative position fixed rigid body joint hinge


I am working on a robotic simulator that should be used in BGE. Problem I am facing is that if I use rigid body joint hinge constrain the relative position between wheels isnt fixed. The wheels are going wild if they are under load. Is there a way to get a really stiff hinge connection between wheel and chassic to used in BGE? Thank you.

I have tried generic 6DOF and manually limited rots locs and it behaves the same. Under load location, rotation isnt really limited. Any idea? Is this limitation of BGE?