Last year we had a lot of discussion on tires, it's that time again.
I am looking at replacing my Tarmac's tires for a fast century coming up in mid July. My standard tire is the Conti Ultra-gatorshin. But in thinking a lot about how rolling resistance varies with tire selection I came across this study:
The second graph is telling and relates in many ways to what Hermes has been saying about the effects of weight on the mere mortal rider like me.
From this study the Vittoria Open Corsa seems like the tire for me. When actually getting more specs on it I find it has good puncture resistance and a decent ride as well. It is pricey compared to the UG but 13w savings is substantial. Consider that the best cyclists over an hour TT average no more then 300W I'd be lucky to put out half that much, this could be an easy 10% performance gain. http://blog.mapawatt.com/2009/07/19/...e-power-watts/