I think the Brabus Monoblocks come in 10" wide..

I see Niche wheels popping up a lot and they have a few that come in workable sizes/offsets.. not sure about their quality though
http://www.nicheroadwheels.com/cms_p...1%20Targa2.pdf slight concave with a stepped lip..

here's something interesting for you as well: ?|? Rotiform Wheels ?|?

SSR also has some options: SSR Wheels - SSR Executor EX02