Originally Posted by
chas58
This is the original 15% tire drop chart. Still valid today. I guess you can interpolate a little for 40mm. This is wheel load (not rider weight). This was mind blowing when it was originally published, but all these years later, it is still pretty applicable.
I thought I'd used this as a reference before, but perhaps not. I run 700x32 at around 45-50 pounds on pavement, 700x30 50psi, 700x28 55-60, and 700x 25 at 60-65. My 700x42 RH tires on gravel are typically 30-34 pounds. I rarely put them above that for pavement...maybe I should try, lol, but seldom ride a pavement only ride on that bike anymore. I weight in the 150 range.