Originally Posted by
skidder
I just look at the sidewall of the tire and pump it up a little below the maximum pressure molded into the tire body. Currently alternating between two bicycles for daily road rides, running 700x32 and 700x35, and they get pumped up to about 75-80psi. I check it weekly and top off a necessary. No pinch flats, blow-outs, or other tire problems so it seems to be working.
That's what I do. On my road bike, which has tires with max. inflation of 110 PSI, I usually put in about 90. On my gravel bike with 65 PSI tires, I usually make sure they're at around 60.