Re: Tire width and rolling resistance - wider not always better. [imswimmer328]

Feb 20, 19 16:15

imswimmer328 wrote:

Due to the way larger tires bulge out, a 25mm tire on a rim like that will have a massive aero penalty that offsets any minor crr benefit. Unless you're riding enve wheels, 23 or smaller is better for tt purposes

I think you're dramatically overestimating the aero difference between a 23 and 25mm tire on a wide wheel. FLO studied this pretty comprehensively. Their estimation for the time difference over an Ironman distance bike leg between a 23c and 25c GP4000Sii on one of their wheels was 9.17 seconds....with the 25 being faster.

The Goldilox tire was actually the 24c GP Force, which is pretty close, dimensionally, to the new 25c GP5000.

"They're made of latex, not nitroglycerin"

Last edited by: gary p: Feb 20, 19 16:55

Edit Log:

Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:16
Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:18
Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:21
Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:22
Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:48
Post edited by gary p (Dawson Saddle) on Feb 20, 19 16:55

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