The premium regional haul Roadmaster RM234 by Cooper tires are engineered for high scrub applications. Their ribbed tread pattern features continuous shoulder ribs that enhance surface contact for better braking and handling. On wet surfaces, the wide grooves help prevent hydroplaning by effectively evacuating water from the contact patch. An optimized tread pattern and rubber compound on RM234 tires minimize rolling resistance to ensure high fuel efficiency. The curb bar and high scrub tread compound enhance tire reliability for long mileage.