Quote:
Originally Posted by Tango Charlie
tufts around the perimeter of the wheel well in the nine o'clock to two o'clock positions, were more stable.
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To me it looks like this might be true, but in a more narrow range: 10 or 11 o'clock to maybe 1 o'clock. In the fan-blade wheel design is sucking air into the wheel, might that airflow then be forced under the car and out the top of the wheel well? Isn't the movement of air through the wheel itself a source of rolling resistance? Have you tested the effect on MPG? Sorry for so many questions. Thanks for posting the surprising result even though it frustrated you a little. Very interesting.