1. What is a Gravel Bike Tyre Pressure Calculator?

Definition: This calculator estimates the optimal tyre pressure for gravel bikes based on rider weight, bike weight, tire volume, and terrain type.

Purpose: It helps cyclists find the ideal pressure for comfort, traction, and performance on various gravel surfaces.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Recommended tyre pressure (PSI)
• \( R \) — Rider weight (kg)
• \( B \) — Bike weight (kg)
• \( F \) — Terrain factor (1.0-1.4)
• \( V \) — Tire volume (cubic inches)

Explanation: The total weight (rider + bike) is adjusted for terrain roughness, then divided by tire volume to determine optimal pressure.

3. Importance of Proper Tyre Pressure

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

4. Using the Calculator

Tips:

• Weigh yourself with riding gear for accurate results
• Check manufacturer specs for tire volume
• Adjust terrain factor based on expected conditions
• Consider running 2-3 PSI lower in wet conditions

5. Frequently Asked Questions (FAQ)

Q1: Why does terrain affect tyre pressure?
A: Rougher terrain requires lower pressure for better traction and impact absorption, while smooth surfaces can use higher pressure for efficiency.

Q2: How do I find my tire volume?
A: Check manufacturer specifications or use online tire volume calculators based on tire width and diameter.

Q3: Should front and rear pressures be different?
A: Yes, typically 2-4 PSI lower in the front for better control, as more weight is on the rear.

Q4: How does tire width affect pressure?
A: Wider tires generally require lower pressures - our calculation accounts for this through the volume parameter.

Q5: When should I adjust from the calculated pressure?
A: Consider personal preference, riding style, and specific tire/rim combinations. Use this as a starting point.