I had 9 flats in 3 weeks (yes 9!!! ) so finally switched to a Continental DuraSkin... not a single flat since! I've ridden a couple centuries on it and last time ended up stopping to help another woman who had a flat and didn't know how to fix it... since I am now well versed in that subject I was able to change HER flat at least!

The Duraskin doesn't roll quite as fast as the Michelin Race tires I had, but I amke up for the lost time by not sitting on the side of the road cursing and changing flats!