You could put on a set of Avon race tires. Not technically street legal but treaded and I seriously doubt if any inspection station or cop is going to notice you have race tires on. Probably get a couple thousand miles out of them on the street, maybe more.
Not sure if they'd warm up to sticky temps on the street though.
I'm sure Wera or AHRMA have a race class for the bike.
JohnnyB