Hi Anton,

I understand your approach on the unreliable nature of "compound from cd" shape. However without it, there isn't a better way to make a front wheels of a car. You can't try to make sub groups of a car mesh, it's a lot of work and "compound" doesn't work as an alternative because in collision wireframe body of the car interferes with the rotating tires.

Can't you at least leave compound from cd in the selection list with a warning? It would be better if any demanding users should be able to use it.

Best regards.