STX Inertia Road Folding Tire



Quick Overview

The Serfas® STX Inertia Folding Road Tire is constructed using our Alchemy Compound for lower rolling resistance and world class grip.

Independent testing conducted at Wheel Energy® of Finland provided data showing Serfas® STX Inertia tires as performing 8.12% better on cornering than the best selling road bike tire on the market.

  • Serfas® FPS Flat Protection
  • Dual Density Tread Compound
  • 120 TPI 3-Layer Casing
  • Low Rolling Resistance Alchemy Compound w/ World Class Grip



  • Utilizes Our Alchemy Compound For Lower Rolling Resistance and World Class Grip
  • FPS (Flat Protection System)
  • Dual Density Tread
  • Smooth Tread Pattern For Ultimate Performance
  • 120 TPI 3 Layer Construction
  • Bead: Folding
  • TPI: 120
  • Sizes Available: 700 x 23, 700 x 25, 700 x 28
  • Pressure: 130 PSI
  • Weight: xxx g (23), xxx g (25), xxx g (28)

Additional information

Tire Sizes

700×23 Folding, 700×25 Folding, 700×28 Folding

1 review for STX Inertia Road Folding Tire

  1. Mark Solow

    I’ve been a Continental 4k, 4kS, and 4kSII fan for several years. Just put a set of these (700×25) Inertia’s on my carbon roadie after getting a sidewall blow-out on my (700×25) Conti’s. They way outperformed what I expected! The grip on corners was unmatched—which is what Conti says makes theirs faster. Plus, the ride comfort was smoother too. So, I put a set on my wife’s bike and she loves the ride too. We both think that they are faster, but can’t confirm. Could just be riding faster because we like the way they feel.

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