Exclude object types for vehicle wheel collision

Hello I have been strugling to disable the collision of the wheels of the wheeledVehicle class with speciffic object types, in order to avoid that crazy behavior show in the linked video.

I read that the engine does not actually calculate collision for wheels but raycasts in a radius. Does anybody know a way I can disable the collision for a speciffic object type, or trace channel or anything that would let me exclude the trees from being traced. Any help is greatly appreciated! Thank you