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In motorcycles, the size and output performance of the engine itself has a major effect on the maneuverability of the motorcycle. In particular for cases where a high output engine is mounted on a lightweight frame, these effects are even more of a concern. In the case of developing a racing motorcycle with a high power engine, the behavior of the motorcycle differs depending on the output range used and there are a lot of cases where changes to the basic dimensions of the motorcycle as well as the main components are required. Here, there are a lot of cases where the rider and drive-able courses are limited to compatibility with distinct specifications and when considering use as a general mass production motorcycle by riders with varying levels of skills and in various environments, it difficult to determine how to provide support.

High performance motorcycles require dynamic performance that encompasses superior handling, wherein the wheels are one of the key components that determine the dynamic performance of the motorcycle. In this paper, we will clarify the dynamic parameters for the wheels that have an impact on the handling while also constructing a design technique in which numerical shape optimization is applied.