Josh Poertner at Silca is one of the worlds top authorities on tire pressure. He has taken his knowledge and experience and built the SILCA PRO PRESSURE CALCULATOR. You can put in your weight, tire and rim size and intended riding surface and it will tell you your most efficient tire pressure. Check it out: https://info.silca.cc/silca-professional-pressure-calculator
If you want to go deeper into the nerdery, witch Josh's video series on tires and tire pressure:
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