Technical Details

It’s all about how you mix it

The rolling properties of the rubber compound of a tire are primarily determined by three interacting factors – stiction [grip], rolling resistance and mileage [longevity] . The dilemma: If you improve any of these factors it can have a detrimental effect on at least one of the others. A tire with maximum grip wears quicker and rolls more slowly. If you then make a tire roll faster and more durable, grip, in turn, is reduced.

With our Black Chili compound, a tread compound which is always based on the latest knowledge of polymers and raw material research, we have supplied the cycling industry with an enduring solution. Depending on the application of a tire, we adjust the compound formulation for the specific discipline – for road or mountain biking, time trialling or downhill racing.

How does that work? For Black Chili we refine special synthetic rubbers with proven natural rubber to high-performance tread mixtures. To these mixtures we then add soot particles, which in turn are optimised in shape and surface properties.

Cut and puncture proof

With PolyX Breaker™ car expertise comes to the bicycle tire sector. Polyester has been used successfully for years in car tires and has proved extremely effective. The extremely resistant polyester fibre is woven tightly crosswise. A very high fabric density is achieved which makes the breaker resistant not only to foreign bodies, but especially to ­punctures. The rolling resistance is not affected by this breaker.





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