Quote:
Originally Posted by ergott
Unless these were all tested in the same session there's too much margin of error to be valid.
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All this tells me is that for each manufacturer the rim and disc versions are pretty damn close and not worth getting excited about. You are free to choose which version you want with basically no aero penalty.
As much as I love my rim brakes and don’t really see the point of discs on a pure road bike, I don’t think the big manufacturers will be putting much R&D into rim brake optimization. Almost all the world tour teams are on disc this season.