Well I got these a few months ago and since then have done about 600 to 700 miles on them. They seem hard as nails no punctures as of yet or cuts and they often get used on tracks and sustrans paths and the like and seem fine. Only draw backs are they can sometimes feel a bit lacking in grip in the rain but then most tyres do I think. The tyres recomend a min pressure of 100 psi and a max of 130 which seemed quite high for a min to me. And for about 8 quid of wiggle you cant go wrong. Edit: front tyre suffered massive blowout causing a unfixible split. Not to impressed by that but then again it could have happened to most tyres due to the size of the bit of glass.