I'm considering doing a last minute trackday and will probably only do so if I don't have to buy tires. I have a set of medium compound michelin power race tires on my 6R which I mounted in July 08 and rode about 12 sessions worth of trackdays on (2 trackdays, 1 rainy-5 sessions, 1 dry-7 sessions). They look to be in great shape, and after a short ride around the block, warmed up nicely and was very soft to the touch. My question is, do you think I should change these tires due to the year they've been unused (last trackday was August 08)? Any input or experience is appreciated.