Recommended PSI
F15 / R15
Front
15.0 psi
Rear
15.0 psi
Recommended Tire Pressure
F15 / R15 psi
Front
15.0 psi
1.03 bar
Rear
15.0 psi
1.03 bar
As an Amazon Associate, we earn from qualifying purchases.
MTB tire pressure typically ranges from 20–35 PSI depending on rider weight, tire width, and terrain. A 180 lb rider on 2.4" tubeless tires should run about 23 PSI front and 26 PSI rear on trail terrain.
| Terrain | PSI Adjustment | Reason |
|---|---|---|
| XC | +2 PSI | More rolling speed |
| Trail | Baseline | Balanced grip/speed |
| Enduro | -2 PSI | More grip, compliance |
Yes. The rear tire carries more weight (about 60/40 split), so it needs 2–4 PSI more than the front. Running the front lower improves cornering grip without affecting rolling resistance much.
Yes. Tubeless setups can safely run 3–5 PSI lower than tubed because there is no inner tube to pinch flat. This lower pressure improves grip, comfort, and small-bump compliance.
Heavier riders need more pressure to prevent rim strikes and maintain tire casing support. A rough formula is rider weight divided by (tire width × 7) to get a baseline PSI.
Inputs
Result
180 / (2.4 × 7) = 10.7 base, no terrain adj, -3 tubeless = 7.7, split ±1.5 = F6.2/R9.2. Clamped to 15–40 range.
Inputs
Result
150 / (2.6 × 7) = 8.2, -2 enduro, -3 tubeless = baseline adjusted, split by bias.
PSI = Rider Weight / (Tire Width × 7) + Terrain Adj + Setup AdjEmpirical formula adjusted for terrain (+2 XC to -4 DH) and setup (-3 tubeless).
Vehicle and tire tools
Last Updated: Mar 20, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.