Seems fairly close to normal, I can get 11, 500 on the same rear tire you're running, but I do alot of straight highway with little stop and starts. The smoother you are on the clutch and easier on the take offs building speed, and the least amount of engine braking, and keeping her below 80 mph will increase rear tire life. I've got over 82,000 on motorcycle rear tires, comparing the mileage, and how they last on different riding habits. I too like Bill have a bf goodrich car tire on the back, and that is all I will ever run from now on!!! good luck, ride safe!, and "enjoy the ride"