Not sure why I didn't check this site before I bought but I just installed a set of S-Drive's for the 968. 225/45 front and 255/40 for the rear (17's all around). I had a set on my old Boxster S and loved them. The 5 year old Yoko's on the 968 howled like the coyotes around my neighborhood. In just the drive back to the office from the tire store, they were much quieter and just like I remember. I'm looking forward to the high speed run on the way home tonight. I'm looking forward to really comparing the grip and balance of the 968 against the Boxster S once these wear in. Looks like my next set might be the Sumitomo's based on the reviews here. Hopefully that is a ways off. I'm sure the 968 will not eat the rears as quickly as the Box. Those lasted 10k, maybe 12k if I babied them...
I'll update this thread once I get some miles on them.