I am still trying to figure out what happened. I pulled out of my steep driveway and onto the highway, always with a little bounce. Felt the tuck being pulled and heard the spare tire on the front of the trailer squeal. Pulled to the side and had a thirty foot skid mark from the new tire a little flat on one side now. Had to unlock it to put the hitch back on the ball. Hooked it up and went for a boat ride. But can't figure out if the hitch failed or if I had it hooked up wrong. Everything is one year old and not used in salt water. Lowe FM165.