OP, you rode a fully suspended recumbent and you are complaining about getting flats on a tire not designed for expedition use? I would have thought that your tires would have been the least of your breakdown problems. Schwalbe's mistake is to label a wide range of tires "Marathon" - everything from an economy model to the XR which is truely an amazing bit of engineering. Schwalbe runs out of superlatives when describing their tires so they begin to repeat themselves and confuse everybody. Not such great marketing, but a wonderful tire (plus, XR, and, hopefully, the new Supreme).