"Greatly disagree" seems strong for two seconds... especially when it swung back the other direction. And since the testers disagree.nachetetm wrote: ↑Sat May 26, 2018 4:56 pmI greatly disagree with your conclusions from that video. One of the riders was two seconds faster on 28 than on 25.... on a 3:45 minute ride. On an hour ride that will be 32 seconds. We can claim it is not much for someone not racing but most of the times aero wheels give less advantage for a much bigger expense, as using a wider tire is a free upgrade. 28c is also a bit more comfortable over 3:45 minutes ride. In a three hours ride the difference will be very substantial.
The other rider found the opposite result, 25c was two seconds faster than 28c
https://youtu.be/xPi6lvkp7qw?t=6m50s
Again, pretty surprising to draw such clear - and opposing - conclusions from the people conducting the test in the video.To me the conclusions are very clear from those videos. When the road is rough, 28c are much more comfortable and much faster. There is much more to gain going wider than going aero. With smoother tarmac that may be different, but in a ride with changing tarmac, I am sure at the end it is faster the wider tire versus the narrower.
https://youtu.be/xPi6lvkp7qw?t=7m32s
Ever try bumping down pressure in the 25s?