I recently bought an 06 Cayman S with 35k miles. The previous owner installed Eibach springs & Tarett stabar/drop links with pronounced negative camber. The car sits so low, I can't get up my driveway without scraping.
I went on a Porsche club back road run and I spoke with another member with a Cayman S that was running Cayman R suspension. Supposedly that drops the car 20 mm but his sat as low as mine.
I'm considering going back to factory standard springs to stop my car from scraping. I also checked my tire pressure today and it was pretty much 22 psi all around. Eve