How can he get 30,000 miles out of a rear tire? I have run the E3 on my Valk and best is 12,000. And 50,000 on the front? Best I can get is around 20,000. I have just over 11,000 on my F6B and already need a new rear tire. I do not use the rear brake very much except when REALLY needed. Could it be the acceleration ? I mean, I make the bike go, I don't wuss around with it but I am not drag racing it either. Just don't know how he gets that kind of mileage out of tires.