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Old 06-28-2022, 12:17 AM   #1 (permalink)
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DUMB Wheel question



will taping over the little vents/holes in my hubcaps for long trips help with aero or mpg? obviously they are there for brake cooling, but i dont plan on doing any braking while driving for hours in the middle of nowhere on the interstate with cruise control set to 90mph...

would duct taping over the holes just for a day add any benefit? even if its 1mpg?

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Old 06-28-2022, 02:02 AM   #2 (permalink)
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Those hubcaps look already quite aerodynamic, I wouldn't hold my breath for an actual MPG improvement if you cover those vents.
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Old 06-28-2022, 05:45 AM   #3 (permalink)
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The dumbest question is the one you didn't ask.

That said, I agree those wheels look pretty aerodynamic already. If you have time to test the duct tape mod, it would be nice to have actual data. But I'm guessing any benefit would be marginal.

Edit to add: Maybe you could use your road trip as a mpg test. Use the duct tape mod for half the trip, and remove it for the other half. See what happens.
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Old 06-28-2022, 02:59 PM   #4 (permalink)
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Are all 4 identical, or do you have symetical caps for left and right?
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Old 06-28-2022, 03:02 PM   #5 (permalink)
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I had aero caps on the Prius where all 4 were identical. That meant half appeared to be facing the wrong direction.
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Old 06-28-2022, 08:33 PM   #6 (permalink)
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Quote:
Originally Posted by Piwoslaw View Post
Are all 4 identical, or do you have symetical caps for left and right?
Just checked. Yeah they must all be the same. Cuz the two on the left side of the car are facing a different direction than the two on the right side haha
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Old 06-28-2022, 09:46 PM   #7 (permalink)
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So it can't hurt to just do the two on whichever side is retrograde to the direction of travel.
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Old 06-28-2022, 10:16 PM   #8 (permalink)
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So it can't hurt to just do the two on whichever side is retrograde to the direction of travel.
What do you mean? And Iím gonna try to tape over the holes for the long trip to Arizona. If people can do pizza pans and survive city traffic, I think I could survive highway
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Old 06-29-2022, 01:44 AM   #9 (permalink)
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'Can't hurt' or 'retrograde'?

Can't hurt = not worth doing.

retrograde = the side that sucks air out instead of in.

Aluminum tape looks better than duct tape, and leaves less residue.
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Old 06-29-2022, 02:53 AM   #10 (permalink)
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I taped them up. Let’s see if the dollar tree grey duct tape holds on! Blends pretty well

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