Originally Posted by chas58

We all believed this for years, until power meters became affordable.

Then the evidence showed that larger tires and lower pressure rolled as well if not better than skinny high pressure tires. Shoot, I used to pump up to 120psi to do century rides. Never again...

For many tires, your maximum pressure should be the minimum pressure listed on the sidewall. But yeah, full pressure does feel faster, doesn't it?