Originally Posted by
63rickert
If this is the sort of thing you worry about better switch to tubulars.
I did not want to mention tubular since tubular is sort of an extreme case that most people will not use, mainly for it hassle. But yes, 3 of my 4 bikes ride on tubulars. And yes, in a past situation where I had used the Bontrager D5 tubular wheelset, 27mm wide at the brake track, with the Bontrager 23mm wide tubular tire for the best aero recommendation (per Bontrager). Then I had a catastrophic front tire flat on a high speed descent where the tire blew out instantly due to a rock cut, thus causing the rim to slam into the tarmac at almost 40 mph. The tire wasn't wide enough to spread across the rim, so rim ate tarmac good and was toast. But at least the tire stayed glued on allowing me to come to a stop. If I was on a clincher combo, that tire would have come off the rim in a heartbeat as soon as that rim rolls on direct tarmac like that.
It's from this experience that question "noodle soup" usage of too narror tire on a too wide rim in a clincher setup. But apparently he thinks aero trumps safety.