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Old 01-06-2019, 04:19 PM   #9 (permalink)
Vman455
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Quote:
Originally Posted by freebeard View Post
There are two little vortexes jetting out from just ahead of the tire contact patch. They're pretty inconsequential.
...plus two rolling off the top, and one off each side. These vortices are the result of the entrainment that reduces a moving wheel's drag compared to a stationary one.

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