06-28-2022, 01:17 AM
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#1 (permalink)
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Master EcoModder
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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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06-28-2022, 03:02 AM
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#2 (permalink)
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It's all about Diesel
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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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06-28-2022, 06:45 AM
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#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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Last edited by Blacktree; 06-28-2022 at 06:56 AM..
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06-28-2022, 03:59 PM
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#4 (permalink)
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aero guerrilla
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Are all 4 identical, or do you have symetical caps for left and right?
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
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[Old] Piwoslaw's Peugeot 307sw modding thread
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06-28-2022, 04:02 PM
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#5 (permalink)
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Human Environmentalist
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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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06-28-2022, 09:33 PM
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#6 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Piwoslaw
Are all 4 identical, or do you have symetical caps for left and right?
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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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06-28-2022, 10:46 PM
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#7 (permalink)
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Master EcoModder
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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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06-28-2022, 11:16 PM
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#8 (permalink)
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Master EcoModder
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Quote:
Originally Posted by freebeard
So it can't hurt to just do the two on whichever side is retrograde to the direction of travel.
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What do you mean? And I’m 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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06-29-2022, 02:44 AM
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#9 (permalink)
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Master EcoModder
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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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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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06-29-2022, 03:53 AM
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#10 (permalink)
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Master EcoModder
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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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