Originally Posted by
WhyFi
Yes, it's going to vary, but it's not as if people are pulling these numbers out of their keisters. If you haven't listened to the Cycling Tips podcast, it's worthwhile -
https://cyclingtips.com/2016/08/cycl...and-pressures/
As far as trying to determine for oneself, no, it's not fairly easy. As is discussed in the podcast, one big factor is that perception is usually backwards - what feels fast often isn't.
Correct. And although some aspects of the formulas used are arbitrary (like 15% drop, who came up with that?), they are a reasonable starting point to which you can tweak a few PSI up/down based on roads and comfort.