[Spinnaker]

They look like the ones available from Tirerack.com

http://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=W0183400253B&wheelMake=O.Z.&wheelModel=Alleggerita+HLT&wheelFinish=Black+Painted&showRear=yes&selectedRear=W0183700153B&autoMake=Porsche&autoModel=Boxster+S&autoYear=2000&autoModClar=&filterFinish=All&filterSize=All&filterBrand=All&filterSpecial=false&filterNew=All&filterWeight=All&sort=Brand