[Phisical Asset] Bone↔Parent unwanted bouncing

This gif I made illustrates my problem

Are bones supposed to be compressed and bounce if pushed by their parents ones? How can I avoid it?

The weird thing is that XYZ movement is locked in the wheels, but they keep being compressed against the chasis/bounced when released instead of blocking the chasis.

How can I avoid this “artifical suspension”?

Thanks.

Help! I’ve tried everything to fix this but I can’t find any solution :frowning: