Honestly I'm not sure. This is on the rear of my Giant Revive, so suspended, and has been pulling commuter duty. I don't recall hitting anything out of the ordinary and the road surface between here and work is fairly smooth. It spends 12+ hours per night out in the elements and we've recently had a cold snap, so mild under inflation might be a consideration. Looks like I might have hit a road deviation with too little air cushion and the rim bent and split in protest.
It's still holding air too, for what it's worth. :lol: