Glad you figured it out. Just so you know, Porsche did issue a TSB indicating that you should not use aftermarket wheel bolts that don't have the floating spherical collars that are on the OEM wheel bolts. That's the 2 piece bolt thingy you are refering to in your previous post. They say those floating collars are specially designed to maintain the proper torque, and that using bolts without them (even when tightened to the proper spec) risks them coming loose later on.
I don't think you will have a problem necessarily, but perhaps a good idea to check he torque on the bolts every once in a while.
This guy bought a set of incorrect sized wheel bolts for his car, and this is what happened:
http://www.youtube.com/watch?v=jv4m41viy4I&feature=youtube_gdata
2001 Porsche Boxster
2007 Carrera S Cabriolet
Threaded Mode
