1. What is an MTB Tyre Pressure Calculator?

Definition: This calculator estimates the optimal tyre pressure for mountain bikes based on rider weight, tyre volume, and riding style.

Purpose: It helps cyclists find the ideal pressure for their specific setup to maximize traction, comfort, and performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Tyre pressure (bar)
• \( W \) — Rider weight (kg)
• \( V \) — Tyre volume (inches)
• \( F \) — Riding factor (varies by discipline)

Explanation: The rider weight is divided by tyre volume to get base pressure, then multiplied by a discipline-specific factor.

3. Importance of Proper Tyre Pressure

Details: Correct pressure prevents pinch flats, improves traction, reduces rolling resistance, and enhances ride comfort.

4. Using the Calculator

Tips: Enter your weight in kg, tyre width in inches, and select your riding discipline. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why does tyre width affect pressure?
A: Wider tyres have more air volume and can run lower pressures while maintaining the same support.

Q2: What's a typical tyre width for MTB?
A: XC bikes typically use 2.1-2.3", trail bikes 2.3-2.5", and enduro/downhill bikes 2.4-2.6".

Q3: Should front and rear pressures be the same?
A: No, rear tyre typically needs 1-2 psi more than front due to weight distribution.

Q4: How does tubeless affect pressure?
A: Tubeless setups can typically run 5-10 psi lower than tubed tyres.

Q5: Should I adjust for terrain?
A: Yes, add 1-2 psi for rocky terrain, reduce 1-2 psi for muddy conditions.