The weird stuff is that default fancy car test works properly using jbullet (both android and desktop - had to modify nbproject/mobile-impl.xml to avoid jbullet to be overwritten with native android bullet) and desktop native bullet but not in android native bullet.
I’ve changed values of stiffness, compression and damping and even used Bullet Vehicle problems - #19 by Martin_Watts as a reference without any success… That’s the reason for my assumption (which could be wrong) of some update missing in the android part of jme regarding physics…
It would be great if you have some values working on android, thanks