Be careful with tire pressure - it's really an individual choice.

I am 5'10" and between 155 and 160 lbs on a given day. I run my MTB tires (with tubes) between 50 and 60 PSI ALWAYS, including racing. Too much, Becky says! Not so, say I. I haven't flatted on a ride or in a race in years - no fear of pinch flats (and in New England, everything is rocky and rooty).

I'm used to this tire pressure, and am comfortable with it. Riding with less makes me more timid and cautious while riding, thinking about getting a pinch flat.

My point is, that everyone needs to find their own ideal tire pressure, and run with that. I personally would NEVER run 30-35 lbs on a gravel road, but YMMV.

SheFly