Wheel fitment questions. Width and offset.

[FUHRIUS]

they're being shipped from the east coast, so they won't be here for a week or so, but I'd been looking for a dark wheel in an 18", wanted something fairly durable but still somewhat light, nd didn't want to spend the $4,500 or so it was going to take to buy Kinesis or Fikse. Sooo, I found these at brandywineporsche.com (advertised on ebay)...they didn't sell on ebay so I called them up and got them for $2k shipped. They're the boxster sized (f 7.5" 50mm offset, r 9.0" 52mm offset) carrera wheels...same size as my turbo twists (which are now for sale). I researched a bunch of wheels, and got some great info from wheelenhancement.com guys...I think this carrera wheel fits the bill of lightweight and durable. I think the black is also going to look kiiilller on my car.