Bought the wheels today...
BM Autosport had a couple of sets custom finished in gloss gunmetal rather than the standard satin finish, but the customer let them down.
I'd wanted gloss, so couldn't resist buying a set - got a great deal too
As said before they are 19x8.5 front & 19x9.5 rear.
Need to order some new BMW centre caps & think about tyres once I've got my head around the sizing!