I checked out the Michelin Pilot cups here
http://www.tirerack.com/tires/tires.jsp?tireMake=Michelin&tireModel=Pilot+Sport+Cup&partnum=24YR8SPORTCUP&partnum=635YR8SPORTCUP&vehicleSearch=true&place=7&index=7
just to see what these things cost for a boxster. They are not that much more than PS2's so that got me thinking. Why not get these instead of PS2's because I do auto-x events and I rarely if ever drive in the rain. Well then I found my answer. The Cups have a wear rating of 80 and the PS2's have a wear rating of 220. Does this basically mean then that the Ps2's will last almost 3x longer than the cups? I would love to have the dry performance that the pilot cups offer but I would't shell out that kind of cash for a tire that will only last 5-10k miles tops.