I have work on heavy equipment for a lot of years and have changed tires on 2 and 3 piece rims, I have had to use a backhoe at times to back them down. I have also seen a hole in the roof of a shop 15 ft high and knew of a man loosing his head from these rims. Gentlemen if you do want to use these rims please put them in a cage or wrap them with chains before putting air to them. Please be safe Axe