Quote:
Originally Posted by firesice18
Is there anyway to calculate this, like per inch of size difference?
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No.
It's just a matter of trying and seeing what it'll do for your car.
It depends too much on how much air is going
through the wheels ; on the wheel design itself; on the general aerodynamic design of the front of the car and the engine bay exhaust.
Bigger wheels fill the wheel arcs better.
If you then cover the open areas of the rims, you've covered almost the entire wheel arc.