this is my logic too, as I am the owner of the fast rolling Force and the "magic" Attack, but I'm not sure we've cracked the code yet on consistency of Conti tires. If you factor in the differing results Tom has gotten, perhaps from different "lots", then the TC makes sense, especially if you're riding at 40kph or so. Posting this for reference from the Graphene thread... even Conti has 22mm Attacks as slow:



OTOH, there is interesting data from Tom that shows the 23mm GP SS to be an OK front tire, on certain wheels anyway, and some data from Josh@Zipp that shows the trivial amount of aero loss on a rear shielded wheel. I know this is only one test.



Having said that, there are some that can't run "tall" tires for whatever reason. This is true for me on my road bike, an old S5. With my TriRig front brake at perfect height, a 23mm GP4000s rubs the underside slightly, and that and a 24mm Force rub the rear cutout like crazy. For that reason I ride the 24mm TCs for road racing, which are the best handling tires I've ridden and roll fast.

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