Just curious as to how many miles folks are getting out of the original tires. I just replaced both front and rear O.E.M. dunlops with Bridgestones. The bike has 8k miles on it. The rear was completely down to the wear bars on the sides. The front may have had another 1000 -1500 miles if I had wanted to push it. I'm hoping the Bridgestones do better. I run 42 on the front and 42-44 on the rear depending on loading. The tires I pulled off were worn evenly with no cupping. E4's were not available at my dealer.