Abstract
Most of off-road performance has been evaluated by subjective method in the development of tire. It has become more difficult to achieve both on-road and off-road performance only by subjective evaluation. One of the aspects to establish objective evaluation difficult is today’s off-road subjective evaluation has been done by experienced evaluators depend on their tacit knowledge and driving maneuver has not been clear. So, we start classifying driving methods and set measurement conditions on Mud off-road. Proposed objective evaluation method explains subjective results. It became possible to evaluate the performance objectively.
