Today's sports cars, compacts and performance sedans are extremely versatile. The tire they ride on has to be the same. The new AZENIS RT-615K offers a world spec construction, featuring a new and improved motorsports-grade cap compound that effectively maintains grip as tire temperatures increase. In addition, the special 8/32nd molded tread design reduces the new tire's tread squirm while providing efficient mileage for street use. A solid center rib significantly reduces wheel spin by increasing the tire?s contact patch void ratio under heavy acceleration. Understanding the tremendous demands the AZENIS RT-615K will experience, new proprietary casing design, bead apex and turn-up technology allow for the elimination of heavy steel construction, resulting in an 8% reduction in unsprung tire weight.