About SilPSI
SilPSI is a free SILCA tire pressure calculator that helps cyclists calculate tire pressure based on SILCA's research-backed methodology. Privacy-friendly - no email or registration required.
Our Mission
We provide cyclists with accurate, data-driven SILCA tire pressure recommendations. Our calculator considers multiple factors including rider weight, surface conditions, tire specifications, and riding style to deliver personalized pressure recommendations.
Based on SILCA Methodology
SilPSI implements the renowned SILCA tire pressure calculation methodology, which has been developed through extensive research and real-world testing. The algorithm accounts for:
- Total system weight (rider + bike + gear)
- Surface conditions (from track to gravel)
- Tire width and wheel diameter
- Tire construction type
- Average riding speed
- Weight distribution based on bike type
- Pinch flat risk assessment
Why Tire Pressure Matters
Correct tire pressure is crucial for:
- Performance: Lower rolling resistance and better power transfer
- Comfort: Better vibration damping and ride quality
- Safety: Reduced risk of pinch flats and improved handling
- Tire Longevity: Even wear and extended tire life
Free & Privacy-Friendly
SilPSI is completely free to use with no email or registration required. We believe every cyclist deserves access to SILCA tire pressure calculation tools, regardless of experience level or budget.