Hey just putting this out there for the developers... I have a Thrustmaster T150 and my friend has a Thrustmaster T300RS and we both noticed that the force feedback in the game was very choppy and kinda weak. Just thought I would let the developers know!
try installing the drivers for the wheel, if that doesn't work, switch to Xinput and manually map the controls in beamng. if issue persists, enable the force feedback curve in beamng controls settings so force feedback will smooth out. if issue just wont stop, switch to DirectInput and remap controls in beamng, then add a force feedback device manually. if none of these work, just don't use force feedback or contact thrustmaster.