I have a set of wheels from my 2007 Cayman S I did not sell with the car.
They were bought in 2008 and are 8x18's and 10x18's
Tires have a bit of life left:
Michelin Pilot Sports
235-40-18
265-40-18
The wheels are in good shape, they might have a couple scratches but all in all are in pretty good shape, I took a photo of the worst spot.
Asking 900 + shipping, Located in Waukesha, WI 53188
Photobucket link:
Pictures by johnnyd8998 - Photobucket