Yokohama Tire Corp.’s two latest tires are the RY407 wide-base single trailer tire and the prototype 702 drive tire. The RY407 is a U.S. Environmental Protection Agency SmartWay-certified tire recognized for low rolling resistance. The super single, size 445/50R22.5, offers improved durability and less casing fatigue thanks to an advanced profile; high-tech compounds designed to enhance fuel efficiency; a zero-degree mid-belt designed to distribute the load evenly, lessen running distortion and provide a more consistent footprint; straight grooves for enhanced wet traction; and cross sipes for wear resistance.
The sleek prototype 702 uses Yokohama’s Zenvironment technology for enhanced fuel efficiency and will be available in the United States in early 2012 in sizes 295/75R22.5 and 11R22.5. The tire offers low rolling resistance, a unique drive tire tread design, a solid shoulder rib and serpentine grooves designed to provide extra rigidity and stability, Yokohama’s patented Stress Control Groove designed to redistribute the shoulder load to prevent step down wear, and a Z Block design to facilitate improved wet traction and lower rolling resistance.