Same thing here - it's definitely a design issue. The whole lower parts of my rear doors as well as the arches are utterly destroyed. I've had many vehicles over the years and have never seen anything close to this bad. Some chips are to be expected but the paint looks completely sandblasted. It would be nice if BMW cared enough to correct this by repainting & applying the highest quality film available (though the film would need to be replaced every few months because it wouldn't hold up to the abuse either) - but my dealer could care less.