Some recent science on pressure/width debate; lab RR tests are basically useless because of the effect of vibrations on the rider of the bike.
Go as wide as you can with supplest sidewalled tyre you can find
https://janheine.wordpress.com/2016/06/14/suspension-losses-confirmed/
There was a discussion in another thread about why track tubs are still 20-23mm pumped up to max pressure. That study kind of explains why too (at least for running on a smooth wooden indoor velodrome).
@Ste_S started
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Some recent science on pressure/width debate; lab RR tests are basically useless because of the effect of vibrations on the rider of the bike.
Go as wide as you can with supplest sidewalled tyre you can find
https://janheine.wordpress.com/2016/06/14/suspension-losses-confirmed/