4000 miles for the first sprocket and the second one is starting to show signs of entering the more rapid wear stage at 2000 miles. Now getting some alloy dust build up on the rear swing arm, the occasional squeak form the belt (it still looks like new)and the sprocket teeth have surface wear on them. The rear tyre is original, a Yokohama Blue Earth but will need changing sometime soon.

I would say I drive within the capabilities of the car and me but I like to "use the performance available".