The solid center rib provides for improved steering and responsive handling while contributing to reduced noise.Specially-formulated performance compounds are derived from performance tire technology for improved performance and enhanced vehicle control."The computer designed configuration of the tire sidewall includes an extended bead filler for improved handling response, lane change and cornering ability.".R-Tech construction utilizes several design features that work in concert to provide enhanced tire performance. Description Wide Circumferential Grooves Four circumferential grooves that include wider outboard grooves resist hydroplaning at higher speeds and contribute.The tapered circumferential sipes allow for increased capillary action to remove water from the tread area to reduce wet stop distances and provide extra grip in rain and snow.An optimized polymer matrix allows the compound to remain pliable at lower temperatures while contributing to lower rolling resistance. This design is said to provide for even tread wear, and to extend the thread life of. This is Coopers first tire to incorporate R-Tech design. Cooper put about 200 million into the research on the rubber to create the CS4, and it really paid off. The chemically coupled silica and carbon black compound allows for superior wet traction without sacrificing tread wear. Cooper tires are replacement tires (non-OEM) and offered primarily for cars, SUV, and Crossovers."The innovative 5-rib tread design incorporates numerous features to provide for excellent stability, traction and treadwear."." Nylon is strategically placed in a manner to resist flat spotting for improved ride quality and balanced, even tread wear for long life.".Innovative 5 Rib All-Season Tread Design.Utilizing ventless technology in the tread area, the CS4 Touring exhibits a crisp, clean, premium appearance." The innovative 5 rib tread design incorporate numerous features to provide for excellent stability, traction and treadwear." "Innovative 5 Rib All-Season Tread Design.An optimized polymer matrix allows the compound to remain pliable at lower temperatures while contributing to lower rolling resistance. Utilizes several design features that work in concert to provide enhanced tire performance Allows for superior wet traction without sacrificing tread wear. The chemically coupled silica and carbon black compound allows for superior wet traction without sacrificing tread wear. R-Tech construction utilizes several design features that work in concert to provide enhanced tire performance. Coupled silica tread compound allows for superior wet traction without sacrificing tread wear.Four circumferential grooves that include wider outboard grooves resist hydroplaning at higher speeds and contribute to reduced stopping distance.