well - I went to almost max - 60 psi with a max of 65 psi and what a ride! WHEEEEEEEEEEEEEEEEEEEEE hit 23.1 max sp on my way to work this morning. I also had a 5 mph tailwind - but I'm gonna pretend it was my higher tire pressure! I'm real anxious to see the difference when I ride home tonight up the mountain! I'm Very excited! Thanks Yet Again for everyones help/advice/words of cheer!