Continental AttackForce Road Tire Set. Continental doesn't just make world class bicycle tires their tire expertise and empire extends into the motorized realm as well. And what Continental learned from motorcycles has been brought into the high performance road cycling realm with their exemplary AttackForce Road Tire Set. Motorcyclists have known for a long time that different demands are made on a front tire than on its rear counterpart. The result is a pioneering front tire and rear tire system for road cycling to be found in the Attack front tire and Force rear tire combination. The narrower 700x22 Attack front tire provides reduced wind resistance and better handling. An adhesion optimized tread mixture supplies the necessary grip especially for wet cornering. The wider 700x24 rear Force tire offers better traction thanks to a larger contact area and at the same time more comfort. Thanks to the fast rolling, optimized tread mixture and the larger contact area on the rear tire, wear is also reduced. Both the Attack and Force utilize Continental's renowned BlackChili compound to maximum effect. This tread compound not only reduces rolling resistance by 26%, but also provides 30% more grip when compared to silica compounds. Additional peace of mind is provided by the Vectran Breaker puncture resistant layer in each tire. Modeled after spider silk, Vectran is spun from the melted liquid polymer Vectra and processed further to a multi strand thread. The spider silk like Vectran possesses an enormous tear resistance at a very low weight so much so that it helps reduce punctures with no adverse effects on rolling resistance. Add in each tire's amazing 330 TPI casing for a superbly supple ride and you've got all the ingredients necessary for high performance bliss out on the road.