"Eddy Current" is the name of Schwalbe's first tire specifically developed for the E-MTB - for All Mountain, Enduro and Gravity. Front 29 x 2.4 inches, rear 27.5 x 2.8 inches is the perfect combination. The two tire sizes combine their attributes as part of a coherent overall concept. The blocks are about 20 percent larger than on the Magic Mary, for example. This results in greater stability, more traction and longer durability. Front Eddy Current Front tires provide dependable cornering and better rolling properties than smaller tires. With its open tread and aggressive block pattern, the Eddy Current allows especially precise control. - ADDIX COMPOUND Push yourself to your limits and demand the most from your tyre. When the pressure is on, it shows its true colours: more grip, more speed, more mileage. Experience a different dimension. ADDIX the new compound for all legendary tires of the EVO line.Every rubber compound is made up of natural and synthetic rubbers - along with many other solid and liquid ingredients. Carbon black, silica, silanes, oils, sulphur anti-oxidants to name just a few. The quality of all these raw materials determines whether a tyre will be outstanding or just mediocre. There are countless options for selecting, combining and measuring them, so a good formula requires highly specialised expertise, high-quality raw materials and extrensive testing - it goes without saying that the final recipe is top secret. ADDIX SPEEDGRIP, the universal compound. It definitely has the widest range of use. Perfect for XC, AM and Trail: for the majority of EVO tires there’s a version with ADDIX Speedgrip! It replaces the previous PaceStar compound where a significant, though not the only difference, during extensive use is more mileage and a longer life. ADDIX SPEED is the compound for XC race