Originally Posted by
noodle soup
So for a 30mm tire, that actually measures 31.54mm on a 23mm inner width hoop? I weigh 185#
Diameter of 31.54mm gives a cylinder volume of 1679777 ml
The Schwalbe chart sort of implies a 30mm tire to be run at 90 psi, so I used that. Your 31.54mm width would only need a pressure of 81.27 psi to be comparable to the 30mm at 90 psi.
