I have them on 4 bikes and absolutely love them. Never had a problem with them. I do notice the tread pattern is different on the 700 size tires than the 27" No matter they are great on all my bikes.. Flatted one on the rear of my Volare but that was my fault for getting a bit rambuncous with presta valve.
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(Life is too short to play crappy guitars) 2006 Raleigh Cadent 3.0, 1977 Schwinn Volare, 2010 Windsor tourist. ( I didn't fall , I attacked the floor)