Dual Density Tread with Flat Protection
The Serfas® STX Inertia Folding Road Tire features a smooth tread constructed using their 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 their competitor's most comparable best-selling road bike tire.
Serfas FPS Flat Protection
Dual Density Tread Compound
120 TPI 3-Layer Casing
Low Rolling Resistance Alchemy Compound w/ World Class Grip
Smooth Tread Pattern For Ultimate Performance
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.
Articles will open in new tab.
A guide to bicycle tire sizes, both standard on newer bikes and common on older bikes.
Understanding older bicycle tire sizes.
The different types of road bicycle tires and how to select what is best for you.
A useful chart for determining the tire size you need for your bicycle.
Tips for proper bicycle tire mounting and tire safety.
A guide to understanding tire width.
A guide to understanding bicycle tire tread patterns and what you should look for.