yep they were specced by BBS purely for 3drs/ 500s and they dont have the right size offsets to fit anything else properly - the only problem with them is that the bolts holding the split rims stick out to much preventing anything over a 300 rotor being fitted inside the rim.
Heres a pic of an aussie 500 with a set fitted, they came either with gold or silver centres
Stretch has a set on his 3dr that were originally specced for Wolf in Germany to fit a saff and the offsets are very different but he has managed to get them to fit
edited to say if you look on the post by TFrallysport in the parts for sale section about the 500 being broken - the car shown has the one piece versions fitted