Continental's Black Chili rubber compound significantly improves wear, traction and rolling resistance through the use of carbon nanotechnology — microscopic carbon particles in the rubber. These mold better to the ground and have more points of contact to give the tire more grip. And, because the compound matrix is formed by more particles, which are connected more tightly with each other, the tire lasts longer. Plus, the smaller particles are more flexible, too, which improves rolling resistance.