Tire Pressure Calculator

Silca-Style Professional Pressure

Get science-backed optimal tire pressure for your exact setup — personalized for your weight, tires, surface, and conditions.

Your Setup

1 Rider Weight (with gear)

2 Bike Weight (kg)

3 Tire Width

4 Wheel Size

5 Tire Type

Clincher (inner tube)

Tubeless

Tubular

6 Riding Surface

7 Rider Position

8 날씨

Dry

Wet / Rainy

Cold (< 5°C / 40°F)

🚴

Enter your setup details and click Calculate to get personalized front and rear tire pressures.

Front Tire

PSI

0 bar

범위: -

Rear Tire

PSI

0 bar

범위: -

Comfort

속도

System Details

총 중량:

Front Load:

Rear Load:

Position:

Front vs Rear

Pressure Range

Performance Profile

💡 Tips

Tire Pressure Guide

The Science

Optimal tire pressure targets about 15% tire drop (deflection under load). This creates the ideal contact patch — large enough for grip and comfort, small enough for low rolling resistance.

P = K × Load / Width^1.6 × Modifiers

Based on Frank Berto's research and Silca's professional model

Key Factors

Weight is #1

Heavier riders need higher pressure. A 90kg rider needs ~15% more pressure than a 70kg rider on the same tires.

Wider Tires = Lower Pressure

A 28mm tire runs ~30% lower pressure than a 23mm tire. Wider tires have more air volume, so they need less pressure for the same deflection.

Rear > Front

The rear tire carries ~60% of your weight. It always needs higher pressure than the front.

Tubeless Advantage

Tubeless tires can safely run 10% lower pressure — more comfort and grip with fewer flats.

메모: Always stay within the pressure range printed on your tire sidewall. These are recommendations — fine-tune based on personal preference and ride feel.