Originally Posted by
bbbean
Trial and error, varies by course and condition. You can run a lot lower pressure in the mud than on rocks and roots. Start at 35 and work your way down til you find the right feel for you.
Exactly. When it's really sloppy with minimal rocks/roots you can really get into silly territory with pressures. I was running <~20psi in the front and <30psi rear with tubes at the really wet races last year and I weigh about 195. As long as you're not experiencing understeer and can stay light on the bike you'll probably be ok. Yes I bottomed out my front tire a lot. My baseline is 22F/32R.