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Re: Tire width and rolling resistance - wider not always better. [Rocket_racing]
Rocket_racing wrote:
I have learned much from the folks on ST about tire width, aero, pressures and crr... and look at this...

https://www.bicyclerollingresistance.com/...prix-5000-comparison

I'm skeptical of Bierman's adoption of absolute drop as "comfort." According to Silca's deflection data, the compliance provided by a given pressure depends on the shape of the irregularities that the tire is suspended against. In particular, the behavior with sharper irregularities tends to be more purely related to PSI, with tire width becoming a less significant factor. So, for most irregularities (i.e. anything that isn't a speed bump), equalizing to 4.5mm of absolute drop is likely underestimating the compliance of the wider tires relative to the skinnier ones. So it might still be true that a wider tire achieves better rolling resistance for a given ride smoothness. (It would also be interesting to characterize this across different amounts of absolute tire drop.)
In practice, where the deflections happen dynamically, this might get considerably more complicated.
Last edited by: HTupolev: Feb 19, 19 15:59

Edit Log:

  • Post edited by HTupolev (Lightning Ridge) on Feb 19, 19 15:59
  • Post edited by HTupolev (Lightning Ridge) on Feb 19, 19 15:59