I had a set of Avon Storm 2 Ultra on which I was very happy with and still had plenty of tread left after 8k miles. But then the rear let me down in the middle of France. I had tyre sealant stuff in which probably stopped a rapid deflation, but in one place fine wires in the casing where sticking through on the inside so a get me home repair was not possible. Kind of put me off the Avons, but to be fair I suppose I must have run over some object without noticing it? Hobson's choice at the time was to replace it with a Metzeler Z6, which I am also happy with. Avon still on the front with even wear and still plenty of tread.