Originally Posted by
prj71
And generally speaking 30 psi is too high. Especially on a hard tail as it would be like riding a bucking bronco.
Nah. It depends.
For example:
The
rigid bike in the video above is running 40f/45r which are good pressures for a 175 pound rider running 40mm tires on tubeless i25 rims on that trail. On the same trail (below, starting at 0:14), 18f/20r are good pressures ona FS bike when running 2.5 tires with reinforced casings on i35 rims.
"Optimal tire pressure will depend on:
Tubed or tubeless
Tire size
Casing type
Rim width
Rider weight
Terrain
Aggressiveness of the rider"