Because I bragged that I could change tires in the Can You Fix A Rear Flat? thread, I decided to go out and replace the old, torn up tires on my bike with brand new, shiny (really, there is a reflective strip), light weight tires.

That was when I discovered that my back rim is cracked in about six places. That puppy was ready to blow.

So, thanks, guys for lighting a fire under my tail and getting me out to do some bike maintenance.

I do wish, however, that I discovered the problem before I got the tire nicely seated.