>>1084403>>1084406If you're riding on gravel, you want lower pressures, not higher pressures.
Yeah, higher pressure will help prevent pinch flats on low-volume tires, but it promotes other punctures.
A tire at lower pressure has a chance to deform a little around irregularities in the surface, reducing pressure points and the chances of punctures. An ultra-high pressure, rock-hard tire will ride over the top of gravel without deforming, maximizing the pressure on sharp edges.
I used to run 35mm tires on my fire road bike - usually around 50psi for mixed-surfaces riding, or 70psi if I knew it was going to be all paved. Now I roll with 45mm tires, 40psi offroad and 60psi paved.