Clovis

If you go the "upsize" route you'll want 205/55 front and 245/45 rear. That will work with the S-03 and most other "aftermarket" tires. Just make sure the Firestone guy gets you right tires. A lot of time they'll tell you they are the same ZR vs. WR and also tell you they are no longer produced which is horse hockey.

Photodavo

I believe I read somewhere that Bridgestone's agreement with Honda is to continue making the S2000 (00-03) specific Potenza S02 through 2011 or something like that. I'm sure it is standard practice for an OEM tire supplier to make a commitment of this type in order to get the business. I would be greatly surprised if they suddenly stopped making them considering how fast I go through them.