The feeling of a tire almost rolling off a rim is a curious thing. It feels like the back of the bike turns into a trailer and swings out to the side. Or like the rear wheel just ran into a pit of marshmallows and lost traction.
I felt that twice today. Then I flatted. Again. I am soooo damn sick of tubes.
I rode most of the way to the lady bears house on about 5psi in a 26c tire. That says great things for Soma Everwears. They hold their shape really well without air (much better than say, a larson mimo). And the blue stripe on mine makes them extra fast. (when they do have air, of course.) The whole way I was riding gingerly, hoping that I wouldn't pull the rubber off my rim.
3/4 of the way to her house I remembered carry a Co2 inflator in my bag o' shit. Oi. I hate my forgetfulness sometimes.
After I gassed up the tire I was off again without and problemos. And it was a rather pleasant day.