Robert Chung - Nice explanation for why Crr scales exactly like hill slope, so a Crr of .005 creates exactly as much drag as climbing up a hill with slope of 0.005 (i.e., half of one percent). If you’re comparing a tire with a Crr of .004 against a tire with Crr of .005 (for a particular surface) the second tire would be like climbing a hill that’s .001 (= 0.1%) steeper. That may not seem like a lot, but over a 200 km race that’s the equivalent of climbing an extra 200 meters compared to the lower Crr tire.
Yeah. But you weren't on CP4 riding past the guy fixing his tyre, then back past the guy fixing his tyre, then checking into the hotel down the bottom at night while the guy was still fixing his tyre... I'll take the extra Crr.
But what if you translate Crr to climbing?
Robert Chung - Nice explanation for why Crr scales exactly like hill slope, so a Crr of .005 creates exactly as much drag as climbing up a hill with slope of 0.005 (i.e., half of one percent). If you’re comparing a tire with a Crr of .004 against a tire with Crr of .005 (for a particular surface) the second tire would be like climbing a hill that’s .001 (= 0.1%) steeper. That may not seem like a lot, but over a 200 km race that’s the equivalent of climbing an extra 200 meters compared to the lower Crr tire.
So by my probably incorrect calculations based on https://www.bicyclerollingresistance.com
compared to GP5000 (tubes) over a 4000km ride:
Pro 4 Endurance V2 = 5040m extra climbing
Gatorskins = 11840m extra climbing
That is based on the Crr difference of one tyre, no idea if it doubles for two.
https://marginalgainspodcast.cc/hysteresis-in-marginal-gains/