Kumho Tire U.S.A. Inc.'s KMD41 is designed for use in on- and off-road applications such as refuse, construction, mining and logging use. Along with added traction, the KMD41 removes the 55 mph speed restriction of the previous product, increasing the speed certification to 65 mph for normal highway driving. Utilizing new Kumho rubber compounding technology, the KMD41 also provides increased on-road traction and greater resistance to cutting and chipping in off-road conditions. Using Kumho's proprietary casing technology, the Integrated Component Optimization System, casing durability and retreadability also have been improved.