Just moved to a 998R from my old 996S and wanted to ask you this: I just bought a second set of wheels and wanted to know whether to fit wets or intermediate on them, for track days in 2005 (starting at BH on Jan 9!). I currently have Supercorsa for the dry times, which I am very happy with.
I would stick something like a Diablo on them, that way you will be able to handle the wet as well. You are unlikely to get enough heat into proper Inters unless you use warmers, and they won't be as good as Diablo's in the wet. Proper wets will fall apart unless it is fully wet so are really only any use if it's 'issing down. If you want a more 'all round' inter Dunlop 364's are very good and aren't that bad when it's proper wet. I use Michelin Pilot Race inters on the TZ but they are like a cut slick so no use in proper wet.
You can definitely ride Supercorsas as intermediates. Done it many times and plenty of club racers do it. Just be gentle!
For your second set of wheels, I would go with wets that last a bit. You could, as Monty says, go with a road legal tyre that is good in the wet. I've had good experience with a set of Dunlop 207RRs, just ask WeeJohnyB! However, if it's proper wet, like standing water and/or ****ing it down, nothing will come close to a proper wet tyre. With "wets" on a rainy track, your mind will almost definitely be the limiting factor. You can go at least as hard as on a road tyre in the dry, knee down and all.
Personally, I'd go with proper wets, if you expect you'll go out on track when it's raining. Don't bother with intermediates for track days.
Mario I have a set of wets, used, about ten laps at rocky only If interested, let me know via this thread, and I'll look at em and tell you what type etc etc and cost via an email address As Felix says your mind will be the limiting factor rgds mort