I'm getting the same wheels around summer (Breyton GTSR-M's), so I'll have pics then. :tonquesmilie: I actually found a video with just the GTS's, here, it's the third car in this video at ~1:22. I saw them for the first time and I fell in love with this design; then I saw the -M's and it is just made to be! :M5thumbs:
That's a Hamann wheel on the silver car and I believe the owner is a member here. The car is from The Netherlands. Eisenmann Race exhaust.
The first black M5 might also belong to a member here (Frank ?) and may have Cargraphic 21" wheels.
The last M5, also black is the one you're talking about. Eisenmann Race exhaust.