I don't have a full carbon bike, but I do have two road bikes with carbon components. The carbon fork on both bikes has never had an issue. My road riding bike saw some BAD chip and seal back in IN when I was doing group rides in a place where they were too cheap to re-asphalt the road. And no problems whatsoever. I have always lived in the Chicago area, so that is where my first carbon got a lot of work on chip and seal and rough roads. Roads back home are awful because of all the freezing and thawing that they go through.