The Serfas® STX Inertia Folding Road Tire features a smooth tread constructed using our high performance Alchemy Compound for lower rolling resistance and world class grip.
Comprehensive testing at Wheel Energy® of Finland, an independent tire laboratory, found Serfas® Inertia tires to perform 8.12% better at cornering than our competitor’s most comparable best selling road bike tire.
New tires on any bike came make a big night and day difference. This tire has a 130 psi max pressure making this a strong stiff tire. The high psi will make it easy to roll improving your speed by making it easy to go faster with less effort. The TPI is the Threads per Inch which department the tube protection . The higher the count the more protection you will have.
- Serfas® FPS Flat Protection
- Dual Density Tread Compound
- 120 TPI 3-Layer Casing (TPI = THREADS PER INCH)
- Low Rolling Resistance Alchemy Compound w/ World Class Grip
- 130 PSI
- FOLDING TIRE
- FLATS PROTECTION SYSTEM FPS
- LIGHTWEIGHT KEVLAR BEAD