Air resistance has a substantial impact on vehicle performance, particularly at high speeds. There have been numerous research studies and tests published on the aerodynamic performance of wheels. According to these studies, both longitudinal and rotational drag contribute significantly to a vehicle’s total drag. In this study, the STAR-CCM+ software was used to simulate and evaluate the aerodynamics and drag coefficient of the AUDI TT. The study focused on the aerodynamic behavior of the wheels, with a particular emphasis on differences in wheel rim design. Based on available literature and research, this study assesses how different rim designs, specifically variations in the number of spokes and rim surface area, affect the vehicle’s overall drag coefficient under varying conditions. The research results reveal that differing wheel shapes considerably alter the airflow around the wheels and the vehicle body, leading to noticeable differences in the aerodynamic drag coefficient (Cd). Specifically, spoke-wheel designs cause turbulence and vortex shedding in the airflow, whereas closed-wheel designs significantly minimize these phenomena, boosting overall aerodynamic performance. These findings lead to the conclusion that optimizing wheel design is critical for minimizing a vehicle’s aerodynamic drag.The study emphasizes the necessity of selecting the optimal wheel configuration to maximize the aerodynamic drag coefficient, which improves the vehicle’s overall performance and energy economy.