I'm coming up to 4000kms on these now......the rear is fairly squared but doesn't seem to be affecting the handling, I'd say there's another 3 - 4000kms left in it. The front looks no different to the photo above!! I'll be putting another rear on before a trip to Spain in early June and then I'll be changing back to Avon Trailriders, not because there is anything particularly wrong with the Pirelli , it's just that the Avon, in my opinion, is the best tyre available for the Hexhead GSA.