An update on mine that I’ve had for about 1 year now. I’ve now ridden them twice in the Alps. Once, a holiday with Ride Slovenia, and the other week I was using them racing in Enduro2. I have used them racing in UK and normal trail riding, although I do have another set of wheels that I sometimes use dependnig on weather and tyres. They are still perfectly in 1 piece 🙂 they have scratches on them (maybe I should have got the matt finish), and I might have snapped a spoke (I think it was these wheels). My team mate @ Enduro2 was running alloy rims and his suffered at least 3 dings. These carbon rims are far tougher than most alloy rims. The Alps stuff they have ridden is likely to be the fastest/rockiest trails most people will ride/race on. Other than full on DH race, I cant think of anything tougher they would be put through.