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Learn/The pressure library

Everything we learned from putting three calculators side-by-side.

10 guides on road, gravel and MTB pressureBuilt on SRAM, Silca and Pirelli methodology
AllFoundationsSurfaceNumbersSetupConditionsCalibrationGear
What tire pressure should I run? A field-tested guide for road, gravel and MTB.
Featured · Foundations

What tire pressure should I run? A field-tested guide for road, gravel and MTB.

The math, the disagreements, and how three engineering teams arrive at three different numbers from the same inputs.

12 min · updated May 2026Read →

All guides

9 articles
Tubeless vs tubed: why you can run 4 psi lower (and what you give up).
Foundations
Tubeless vs tubed: why you can run 4 psi lower (and what you give up).
7 min
Why SRAM and Silca disagree by ~2 psi on the same bike.
Numbers
Why SRAM and Silca disagree by ~2 psi on the same bike.
6 min
Reading a gravel surface in 30 seconds — Class 1 through 5.
Surface
Reading a gravel surface in 30 seconds — Class 1 through 5.
5 min
Front vs rear: the 2-psi rule and when to break it.
Setup
Front vs rear: the 2-psi rule and when to break it.
4 min
Rain adjust: how much to drop, and the cornering caveat.
Conditions
Rain adjust: how much to drop, and the cornering caveat.
5 min
Floor pumps lie. How to calibrate yours with a digital gauge.
Calibration
Floor pumps lie. How to calibrate yours with a digital gauge.
8 min
Hookless rim pressure limits: the 73 psi rule and when it matters.
Setup
Hookless rim pressure limits: the 73 psi rule and when it matters.
6 min
Complete gravel tire pressure guide: from Class 1 doubletrack to Class 5 chunk.
Surface
Complete gravel tire pressure guide: from Class 1 doubletrack to Class 5 chunk.
9 min
MTB tire pressure: hardpack to loose, 2.2 to 2.6 inch — what the data says.
Surface
MTB tire pressure: hardpack to loose, 2.2 to 2.6 inch — what the data says.
8 min