Finding a tire that's built to last and performs year-round is a must for most commercial drivers. Consider the GDL651 FS from GT Radial, which features an optimized block ratio that helps to prevent irregular wear. A special rubber compound reduces rolling resistance to enhance fuel efficiency, which helped the GDL651 FS receive a SmartWay verification. Four zigzag longitudinal grooves strengthen traction and stability, and the GDL651 FS also features an enhanced groove wall angle and tie bar that prevents stone retention to protect the casing from damage.