R-Tech construction utilizes several design features that work in concert to provide enhanced tire performance. The chemically coupled silica and carbon black compound allows for superior wet traction without sacrificing tread wear. An optimized polymer matrix allows the compound to remain pliable at lower temperatures while contributing to lower rolling resistance. The innovative 5 rib tread design incorporates numerous features to provide for excellent stability, traction and tread wear. Utilizing ventless technology in the tread area, the CS4 Touring exhibits a crisp, clean, premium appearance.