I got about 4400 miles on the stock BT56 rear, but after 2200 miles, I've already squared off the Sport-tec M1. It's pretty sticky, but since I'm 100 miles from the closest twisties, most of my miles are on the flatlands and I tend to get a lot more straight miles unfortunately. I guess I'll probably try the Bridgestone BT010's next since I hear the mileage is reasonable and they are reasonably sticky in the curves as well.