im finally on tubeless on my road bike and doing ~65 PSI on 28s and it is quite nice. before I was on TPU tubes on 25s running about 80 PSI. also I am old enough to remember running 23s and even 21s on 120 PSI. would mob that up rural broken pavement and fire roads/back roads in college BITD. I was young and dumb.
mtb is a different story of course
__________________
"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste