Thanks for the response, edevlin !
I found some good threads on the subject :
http://986forum.com/forums/showthread.php?t=7355
http://986forum.com/forums/showthread.php?t=5353
I am still confused, though
If Porsche recommends 29 / 36 , and you run 4 to 7 psi above that yet you do not experience any unusual tire wear, are there any other issues to be concerned with ?
Nick