Here’s my phys file
I made it using the wheels mesh so I could add/replace bodies, using spheres (details) that automatically fit the wheels.
DELETE all existing bodies first.
Then in preview (beside details panel I changed it to my chassis (same skeleton) so I could add collision bodies for it. (I still need top parts for the cab)
For the box I chose box in panel then add/replace bodies. with vehicle (root bone) selected.
The capsules I just chose Add Shape. They are just support collision.
But I got a huge improvement in stability when I UNCHECKED - ‘Contribute to Mass’ under body setup in details for the capsules.
