Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
IMO, pressure is the secondary consideration. Start by selecting an appropriate tire width, subject to your frame's tire clearance, then determine the best pressure.
If you look at the car and truck world, heavier vehicles use wider tires with almost no exception. If you go to the tire drop article, look for tires wide enough that optimum pressure is under 100psi, and consider these the narrow limit.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance