1. What is a Bike Tyre Pressure Calculator?

Definition: This calculator estimates the optimal tyre pressure based on the total system weight (rider + bike), tyre width, and riding conditions factor.

Purpose: It helps cyclists determine the proper tyre pressure for their specific setup to ensure optimal performance, comfort, and safety.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Recommended tyre pressure (PSI)
• \( W \) — Total system weight (kg)
• \( S \) — Tyre width (mm)
• \( F \) — Riding factor (1.0-2.0)

Explanation: The system weight is divided by tyre width to get base pressure, then multiplied by a riding factor to account for different conditions.

3. Importance of Proper Tyre Pressure

Details: Correct tyre pressure affects rolling resistance, grip, puncture protection, and ride comfort. Too high or too low pressure can negatively impact performance.

4. Using the Calculator

Tips: Enter the total system weight (rider + bike + gear) in kg, tyre width in mm, and riding factor (default 1.5). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the riding factor?
A: This accounts for riding conditions: 1.0 for smooth surfaces, 1.5 for mixed terrain, 2.0 for rough off-road.

Q2: Does this work for all bike types?
A: Yes, but optimal pressure may vary between road, mountain, gravel, etc. Adjust factor accordingly.

Q3: Should front and rear pressures be different?
A: Typically, rear tyre should be 10-15% higher pressure due to weight distribution.

Q4: How do I find my system weight?
A: Weigh yourself with all riding gear, then add your bike's weight (usually 7-15kg).

Q5: Should I adjust for tubeless tyres?
A: Yes, tubeless can typically run 10-15% lower pressure than tubed tyres.