1. What is the Silca Tyre Pressure Calculator?

Definition: This calculator estimates optimal tyre pressure based on total system weight, tire width, terrain type, and weight distribution using Silca's proprietary algorithm.

Purpose: It helps cyclists find the ideal tyre pressure for comfort, speed, and puncture protection based on their specific setup and riding conditions.

2. How Does the Calculator Work?

The calculator uses a modified version of Silca's formula:

Where:

• \( P \) — Tyre pressure (psi)
• \( W \) — System weight (lbs)
• \( D \) — Weight distribution (front/rear %)
• \( T \) — Tire width (mm)
• \( R \) — Constant (0.15)
• \( C \) — Terrain coefficient

Explanation: The formula balances weight support with rolling resistance and traction based on scientific research into tyre deformation.

3. Importance of Proper Tyre Pressure

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

4. Using the Calculator

Tips: Enter total system weight (rider + bike + gear), actual measured tire width, select terrain type, and weight distribution (default 60% rear).

5. Frequently Asked Questions (FAQ)

Q1: Why does weight distribution matter?
A: Bikes typically carry more weight on the rear wheel, requiring different pressures front and rear for optimal performance.

Q2: How do I measure my system weight?
A: Weigh yourself with all riding gear, then add your bike weight and any cargo or water you typically carry.

Q3: Should I use the labeled tire width?
A: No, measure actual width on your rims as it often differs from the labeled size due to rim width effects.

Q4: Why does terrain affect pressure?
A: Rough surfaces benefit from slightly lower pressures for vibration damping, while smooth roads allow higher pressures for efficiency.

Q5: How often should I recalculate?
A: Recalculate when changing tire width, significant weight changes (±10lbs), or riding different terrain types.