I'm going to be doing a track day on my ST4s on June 19th. I'm scheduled for my 12K mile service the week prior and also to have new tires fitted (probably will try the ContiRoad Attacks). I've got Avon's on now and have really enjoyed them, but the Conti seems to be the new rage. Anyway, my question is; is there any reason to hold off mounting the new rubber until after the track day? The Avons are worn mostly in the center because I do a lot of highway riding.