Originally Posted by
.mockingbird.
Both you and that Stuart guy are just guessing. The rider could have had proper inflation but suffered a big sidewall gash during a rocky descent, a decent sized tread puncture that slowly dropped pressure until the next rock garden, etc. Anyone who has ridden chunky stuff at speed knows that stuff can get bad pretty quickly.
Calling the rider an "idiot," as the Stuart guy has done, speaks volumes about Stuart, as opposed to the rider.
Actually, I'm basing what I said on the fact that cyccommute stated lack of air pressure was the cause of the bent rim. If not, then it doesn't belong in this conversation.