To revive the thread, I disagree that they don't work.
Look at this picture:
You can clearly see how they protrude sideways. Mudflaps work at speed and any chips and heavier dirt from the front wheel will effectively be deflected away from the sides.
If anybody thinks that they are fugly, fine. But excuses not to fit them is not the same as proof that they don't work
Anybody got a pic for the rear ones on an f20 M-sport, they were a hassle to fit on the E87/81 M-sport, but once I had them, cars without looked naked
(and not very clean)