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Road Bike Frames, Wheels & Components / Re: the new Van Rysel RCR-F
« on: March 31, 2025, 09:06:33 PM »Bigger tyres inherently create more rolling resistance. The reason they can perform better in the real world is because they are the only real source of damping on the bike and because they enable safe use of lower pressures. But as long as you can stay in the operaring window of the narrower tyre, it will perform better than a wider tyre for the same percieved comfort/casing tension. And also it'll be aerodynamically faster and less affected by crosswinds.
Frame flex doesn't measurably affect power transfer, only effect it has is mental and on handling. Too much stiffness, does however worsen the damping ability of the system, slowing you down on rough surfaces, and creates more physical and mental fatigue.
I think you misremembered whether wider or narrower tires led to lower rolling resistance and now you are doubling down