BryanD wrote:
Just curious...but we do know some tires are more aero than others. If the tire rolled fast and was slow aero, would you still want it?
I guess it's like the Turbo Cottons. The rolling resistance is better than the increased aero drag
From what I've seen the separation between the least aero and most aero tires of similar width is about 50g, or about 5W at the 40kph standard for Crr testing.
And usually it's must less than 50g near zero yaw. Most of the Conti 4000SII magic occurs at higher yaw.
If two Corsa Speed save ~4W vs. the Turbo Cotton at that speed it'd have to be *really* bad at aero to make it not worthwhile. And the Crr benefits occur at both wheels vs. aero which is likely more important up front.