What do you guys like? 25psi seems very good on BT45's on my fairly light RD350. Much lower and they just get too flexible. Going up 5 seems good. 35psi is definitely too high, they get a tad skatey. Perhaps a sign I have to much low speed damping... I've tried as low as 15 but the front end gets mushy like I'm riding in sand.
I run 26-28 psi