1. What is the SILCA Tyre Pressure Calculator?

Definition: This calculator determines optimal bicycle tyre pressure using SILCA's proprietary algorithm based on system weight, tyre width, terrain type, and weight distribution.

Purpose: Helps cyclists find the ideal tyre pressure for comfort, speed, and puncture protection.

2. How Does the Calculator Work?

The calculator uses a simplified version of SILCA's algorithm:

Where:

• \( P \) — Tyre pressure (psi)
• \( W \) — System weight (rider + bike + gear)
• \( D \) — Weight distribution (percentage on rear wheel)
• \( T \) — Tyre width (mm)
• \( R \) — Terrain factor (1.0-2.0)
• \( C \) — Algorithm constant (0.7)

Explanation: The formula calculates separate pressures for front and rear tyres based on weight distribution and adjusts for terrain roughness.

3. Importance of Proper Tyre Pressure

Details: Correct pressure affects rolling resistance, comfort, grip, and puncture protection. Too high reduces traction and comfort; too low increases rolling resistance and puncture risk.

4. Using the Calculator

Tips: Enter total system weight (kg), tyre width (mm), select terrain type, and weight distribution (typically 55% rear for road bikes).

5. Frequently Asked Questions (FAQ)

Q1: Why different pressures front and rear?
A: Most weight is typically on the rear wheel (55-60%), requiring higher pressure for equivalent performance.

Q2: How accurate is this calculator?
A: It provides a good starting point. Fine-tune based on feel and conditions.

Q3: What's the terrain factor?
A: Adjusts pressure for surface roughness. Smoother surfaces need lower pressure for comfort; rough terrain needs higher pressure for support.

Q4: Does this work for tubeless tyres?
A: Yes, but tubeless can often run 5-10 psi lower than tubes at same weight.

Q5: Should I adjust for wet conditions?
A: Consider reducing pressure by 5-10% in wet conditions for better traction.