Originally Posted by
bradtx
I can run 45 PSI in my 26X2.1 mountain bike tires (closest size I have to yours). If I am going to ride where there are plenty of tree roots or stones, or if the terrain is unknown to me, I'll inflate to 65 PSI.
Brad
You should consider a tubeless setup. With roughly the same width tires you mention, running tubeless, I run about 28 psi rear, 26 psi front.....
especially for areas where there are lots of roots and rocks, those are the situations where you need low pressure the most.