i had a left rear wheel break the center on my wife's 76 chrysler, going down the interstate at 75mph. by the time it exited from under the 1/4 panel, it went straight up in the air ! you shoulda seen the cars behind me dodge that thing. when it came down, it slingshotted over the guard rail into the woods. then there was the sparks from the u bolts grinding down on the concrete. luckily, no one was hurt, and no damage to anyone behind me.