hi there, i did post an article on the site re this problem, and this finally led to me changing out of the m sport into a loaded SE with side steps. The side steps seem to stop all the chipping as they act as one large mudflap. Unfortunately they couldnt be fitted to the m sport, and acccording to my dealer neither can mudflaps, although we did order some in and have a look and they did look terrible anyway. I think the clear film will work, but i had all 4 doors painted at 7500 mls and i would suggest you cover all four lower doors as well. I have to be honest, as much as i loved the look of my m sport, in principal i think the car is a joke, having to cover it in plastic to stop the paint chipping. Im sure BMW should have done something about it. They seemed happy to repaint mine again in ayears time if it continued to chip with the protective film, but once out of warranty i think i would have been on my own. I would think long and hard before you order the m sport, and maybe think of the SE as an alternative, regards, Chris.