put a berlingo van on old 3 post ramp at work years ago (3 posts and a central bed that lifts on sills not the best ramp lol) took engine and box out then sent it up about 5 foot for it to fall backwards off the ramp and crush the back doors and kinked the roof i really wish id looked in the back first as it was loaded to the roof with tools, scaffold and other heavy items! whooops