Rubber compound

Rubber composition comprises at least one diene rubber, 0-1.2 parts per hundred (phr) zinc oxide, and a vulcanization system, which contains at least one accelerator and elemental sulfur and/or at least one sulfur-donating compound, where a molar ratio of the accelerator to the sulfur is 0.9-5. A total molar amount of sulfur consists of the elemental sulfur and sulfur discharged from sulfur-donating substances.