I think I mean static collision for the wheels when the car hits the ramp the wheels go through but not the body. I sort of have it working with the Drivable car Package from the marketplace but I think you’re right it’s really hard to get it so it just doesn’t bounce off the ramp at his speed messing around with the collision bodies seems to help. I have it working. The ramp material needs to have a physics material. Thanks for your help. I really like your work it’s much more elaborate then the one I paid 30 bucks for.