Shipped from Ireland.
http://www.performancealloys.com
They promptly answered my email questions, as did the ATS rep in Germany. They were listing 16", 17", 18", and 19"... now only the 17s and 18s. Kinda wish I'd bought 16s because of the greater selection of tires available, but... I do like the look of the 18s. Send me a PM if you're seriously considering buying them - TPMS fitment isn't straightforward (I used Huf sensors).
Good luck sorting out the tire size/suspension drop details. Maybe you'll have to break some new ground for the community of R60 owners?