Ok, so I've bent my fair share of rims but I'm curious as to what is actually happening. Usually when you run lower pressure, especially on a heavy ADV bike, bent rims seem to come out of nowhere. So what's the actual cause? 1. Is it the actual tire sidewall deforming and being forced outward, bending the rim and compromising its strength? Or 2. Is it that there is so much force that the tire essentially goes flat and the rim contacts the ground through the tire? I've heard arguments for both, but I'm curious if any has any actual proof like a still picture or slow motion video of a rim bending. The outcome is the same either way, just hoping to settle a late night bar argument.