Quote:
Originally Posted by AeroMcAeroFace
Considering the frontal area, the drag reduction is, on the scale of the car, very small. How much of the frontal area of a car is tyre?
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FYI, On my Auris, factory Cd are following depending on wheels only:
15: 0.25
16: 0.26
17: 0.28
There are no other aero mods or differences in these 3 trims.