Originally Posted by jimmuller

Alas, I did an rhm imitation this morning. I rode the Motobecane to work and flatted one of the Vittoria sew-ups, picked up what looks at first examination to be a 1/4" cut. I was about 2/3rd's of the way in, running downhill at speed rocking a 47/17 gear ratio when the rear tire went POW-shhhhhh rather loudly. Fortunately I carry two spares. I quickly swapped tires, pumped it up, re-assembled the bike, and got out onto the road about 50yds in front of an on-coming street-sweeper machine. Dang! If I'd been just 10 minutes later whatever it was I hit probably wouldn't have been there.