It's not "clean" enough. Too many vents. The vents on the side skirts are the worst IMO. There should only be one set of vents on the rear bumper. Front bumper is too busy.
2008 IB E92 M3| BBS | KW | Arkym | Platte Forme A.G. | Active Autowerke | K&N | Fabspeed | Dinan | Evolve-R