Well with 2 weeks til the Fling and after solid block of training, the front carbon rim on my Giant Anthem Advanced has failed - see attached photos. There was always a small "ridge" in the rim, like the one near the air valve, but where the spoke has popped out the ridge got bigger over time. I now suspect this might have been a manufacturing defect, since there are no ridges at all on the back rim. The bike is 2 years old. The failure happened unexpectedly - no crash or impact. I've written to Giant to ask if they have any advice...