In recent years, reducing the cost of vehicles, fuel consumption, and producing environmental-friendly vehicles by minimizing exhaust emissions are the main topics that the automotive industry and researchers emphasize. In this way, more environmental-friendly vehicles will be produced and harmful gasses will be released less into nature. The main subject of this study is to obtain a lighter race wing by using waste rubber granule material. Reducing the fuel consumption and exhaust emission emissions of vehicles is possible by producing vehicles directly from lighter materials. The light weighting studies in recent years are provided by the production of composite materials that have better mechanical properties and enable the production of much lighter parts. In this study, a finite element analysis method was used to compare the application of foam core body and waste rubber granule application to formula vehicle racing wings. The results of the analysis are presented in the figures as distribution of total deformation and Von-Mises stresses. As a result, it has been found that the waste rubber granule material has good mechanical properties and reasonable cost, and it can be used in racing vehicles. In particular, it has been found that the cost of parts used per kilogram is reduced by a tenth.