A buddy of mine rides on non-pnematic tires. They use plastic pins to stay in the rim or something like that. He swears by them and says they are just as fast as his gatorskins...which i raise an eyebrow at and let pass. Anyways, if I were getting flats left and right, I would look into those foam tires as they are probably about the same efficiency. It would take a lot for me to look into those though.