Originally Posted by
cthenn
Even at your weight, per most tire inflation charts, it still recommends under 100psi...
This. I'd support you to try a 28mm at 80 psi. Don't pay attention to deflection or the fact that it feels different than you're used to. Go out for your normal 20-mile ride and when you get home look at the numbers and compare them.
You're always free to go back to 120 psi if it doesn't work for you.