+1. Since experimenting with the Frank Berto recommendations years ago, I have not been disappointed. No pinch flats, and the ride is much more comfortable than when I simply aired up the tires to the max pressure rating.

This calculator makes it easy: Bicycle tire pressure calculator (I use the "Weight of (Fully-dressed) Rider & Bike" option and select the 45%/55% weight distribution for any road-style bike.)