"It depends on the road surface, but 10 years ago the standard was 23mm tires at 8 or 8.5 bar, or 115, 120 psi," Brown said. "And now it's 25mm for regular road racing and 7 to 7.5 bar for front and rear, so a little less than 100 to 110 max on the bikes." So what's the deal?

What is the best PSI for a road bike?

A typical road tire should be inflated to something between 90 and 120 PSI. Mountain bike tires, on the other hand, tend to run at much lower PSI.

Is 60 psi too much for bike tires?

Imagine you've purchased a new set of mountain bike tires that recommend a range of at least 35 and no more than 60 psi. Begin by inflating your tires to the middle of the range, adjusting the inflation depending on your weight. If you're a heavier rider, you may want to start off at around 50 psi for each tire.