I was rolling down the sidewalk just going from the sidewalk to the blacktop street. The blacktop was a bit taller than the cement sidewalk. It must have been just high enough to hit the rubber of my tire, but miss the plastic wheel hub. I jerked forward, luckily having my chest strap on. I often don't wear it, but when walking the dog I sometimes put it on. I thought my whole front caster wheel broke off. But it just ripped my tire right off the rim. By the time I stopped moving I was in the middle of the street. I was able to drive to the corner sidewalk and call home. I guess I should just wear the chest strap every time I go out. One more time my cell phone saved my butt.
Greg
