Very nice. I like the wheels and drilled rotors. Look very good and the ///M bumper cover looks great and it's all in the best colour...
Side markers as mentioned are worth doing for the sake of a few $$'s and some clear indicator headlights would make an awesome looking Zed and update it even further.
Not a great photo but shows how it cleans up the car:
Cool - I loved the look of the black Z4M. I don't think I've ever run so close for so long to another car which I did not know the owner of
My trip started 2 minutes before you caught me cruising up the A38 hill and ended 2 minutes after we parted at the NEC rail station. Must have been 15 to 20 miles.