Looks like on a new set of PR3's the tread depth is approx. 7/32. My rear tire is 4/32, front is 3/32, so 60% tread left on the rear, 50% on the front. I think I will pull them off for the track day and throw on the T30's. I've got a 3K mile ride in mid-June so with any luck I can do the...