Thank you mr wilks. Have a set of ACS type 3 RS and a set of BBs RG-R, both in 18's that fit too, but the styling is a generation behind-late ninties / early 2000's. More suited given the offsets to the M Coupe or E46 M3.
Just acquired this car putting it on a hoist tomorrow to sort out the wandering I experienced driving it home, and may well end up considering 17 inch Apex or BBS CH styles. (Not sure if the CH style is available in 17)