When I still had the bird, I went through 3 sets of Avons on the rear. The AV36 several years ago, netted me about 6500, then they came out with the AV46 and I got 7K out of the first one, the about 6500 out of the third one. I had a new one on the bike when I sold it, so I don't know about that one obviously. I always ran about 38 in the rear and found it to be sticky enough to get it to the edge of the tire and drag the underside of the fairing on both sides. Too low of a pressure will greatly reduce the mileage of a tire. Oh, bo burnouts with any of them, but always hard on the throttle when accelerating.