After few years of riding and training for fun, I’ve decided to move forward and start racing this autumn and next year. I’ve been trying to experiment a bit with position, aerodynamics and tyre choice and pressure to improve my performance ! On road, I’ve found the Slica calculator (https://silcavelo.eu/pages/sppc-form) very useful to get a first idea of a good tyre pressure. However, I don’t understand at all their result when it comes to MTB tyres. In some cases, they prone a 1 bar tyre pressure (and even lower) ! How should I understand that ? Because if I understand the physics correctly, lower than this (if I increase tyre width to 60mm for instance) would be a depression in the tube, wouldn’t it ?
Thanks for your insights !