You running them tubed or tubeless? Burts prefer tubeless and not too low a pressure. I've ridden them for years on/off road even on sharp rocky coastal cliffs for a year and they've held up fine. They are superb tyres, but aren't fit and forget.
I'm about 75kg with a rack back as well, so I hung around the 35psi on sketchy rides and upped them to 40 if there was a lot of tarmac.
I've searched high and low, and still can't find a lighter, faster rolling mixed terrain tyre. WTB's offering by comparison was pathetically slow.
You running them tubed or tubeless? Burts prefer tubeless and not too low a pressure. I've ridden them for years on/off road even on sharp rocky coastal cliffs for a year and they've held up fine. They are superb tyres, but aren't fit and forget.