China OTR Tires, OFF-THE-ROAD tires, or simply OTR tires, are a type of tire that is designed for use on heavy-duty vehicles that operate off-road. These vehicles include skid steers, boom lifts, trenchers, backhoe loaders, excavators, road construction equipment, forklifts, SPMTs, loaders, dozers, graders, military vehicles, underground mining equipment, sand vehicles, and monster trucks.