I'm messing around with the ETK K and I just released an offroad suspension mod for it (still waiting for approval) but the hubs keep breaking on any jump over 3 feet, anyone know how to strengthen the wheel hubs? I didn't see any strength values in the JBEAMS files
https://wiki.beamng.com/JBeam_Introduction https://wiki.beamng.com/JBeam_Reference From those pages search with ctrl+f deform and also search for break, you will find information.
beamStrength is the attribute you need to look into. It determines how much force a beam/beam structure can withstand before snapping.