Earthmoving tires were specifically developed for use on the GOER vehicle. This development work included the design of various tread configurations and use of maximum feasible synthetic content. Tires were produced in three different tread designs, and two different levels of synthetic content. These tires were then tested for running temperature, traction, and mobility. Durability tests of 40 highway, 40 secondary roads, and 20 cross country were conducted. These tests showed that tires could be produced to provide at least 15,000 miles without any premature failures for this type of service.