Recommended bike tire pressure (psi and bar) from rider weight, tire width and surface — road, gravel and MTB starting points.
| Input | Result |
|---|---|
| 165 lbs, 28 mm, road | ≈ 92 psi (6.3 bar) |
| 190 lbs, 32 mm, gravel | ≈ 73 psi (5.0 bar) |
| 150 lbs, 50 mm (2.0 in), trail | ≈ 28 psi (1.9 bar) |
No. Beyond the point where the tire stops absorbing bumps, vibration losses make you slower and less comfortable. Modern practice is the lowest pressure that still prevents pinch flats and rim strikes — wider tires at lower pressure are usually faster on real roads.
The rear carries roughly 55–60% of the weight, so run the front about 5% lower than the rear for even grip and comfort.
Tubeless removes pinch-flat risk, so you can drop another 5–10% below these numbers. Stay above the tire maker's minimum and re-check after sealant top-ups.
Ideally yes — use total system weight. If you carry 20 lbs of bike and bags, add it to your body weight for a more accurate figure.