Good afternoon Oppos! Here is something to ponder while hopefully having a great weekend. What are the most aerodynamic wheel (wheel covers) you can put on a car (truck, suv, semi)????

Would it be the smooth moon disc? That are commonly used on Salt Flat Racing?

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Would it be a set of wheels with flat faces and no spokes or holes?

 

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Wheels off a hybrid car?

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The wheels off a hypercar?

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So does anyone know the answer to this question?