HEIDENAU K 60 Scout TiresDurability, Its about the Rubber Heidenaus compound uses a high natural rubber content, and theres a lot on there. This naturally resilient compound, combined with sturdy Belted construction, makes for one of the most trusted, longest lasting tires available to long distance travelers. Tread design Most asked question, why do different sizes look different? A new compound created new challenges in design. Heidenau took the opportunity at the inception