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I just got in a new set of 2CT's for the bike last week. My front tire still has tread left, but my rear is a bit lower. The outside tread is fine, but the middle is fairly worn from the usual highway\city riding. I'll be at the July 30th track day with BOMO, and I was wondering if it's okay to leave my current tires on for one more track day, or if it'd be a better idea to put the fresh meat on so soon. I don't have exact tread depth as I'm not near the bike at the moment, but here's some pictures from a couple months ago at the track. As you can see, the edges have tons of tread, it's just the middle that is lower.
My worry about throwing the new tires on is that
A. My tires are still alright and that I'd be wasting useful tread on my current tires, and I think more importantly
B. I won't really have time to break them in much prior to the track day. I've heard that brand new tires require a break in period otherwise they can be pretty slippery. Is that true at all (I've never had to replace bike tires yet) or is that simply a myth?