The Turanza EL400-02 and Turanza EL400 w/UNI-T are Bridgestone's Standard Touring All-Season tires developed to meet the Original Equipment and replacement tire needs of drivers for their sporty coupes, sedans and vans. Turanza EL400 tires are designed to provide a luxury appearance, long wear and responsive handling along with dry, wet and year-round traction, even in light snow.Bridgestone's Ultimate Network of Intelligent Tire Technology (UNI-T) features three core elements: CO'CS, a Computer Optimized Component System which allows design and manufacturing processes to work more cooperatively, leading to a more effective tire that doesn't significantly sacrifice one area of performance for improvements in another; O-Bead, a rounder bead structure that minimizes overlapped joints in the bead area for improved ride; and L.L. Carbon (Long Link Carbon) which helps the rubber compound resist microscopic tread tearing related to wear.On the outside, Turanza EL400 tires features their tread rubber compound molded into a symmetric tread design with straight circumferential grooves to balance dry and wet road traction with noise comfort and hydroplaning resistance. On the inside, the Turanza EL400 features twin steel belts for strength and stability with a polyester cord body to enhance ride comfort.*Specific sizes featuring UNI-T technology are identified as such on the Sizes tab, as well as on the tire's Specs tab.