Aero wheel cover for flangeless, alloy wheel (not product promotion)
 

I have been looking to do some you-can't-go-wrong aero mods to start with and since I don't do repeated heavy braking and use engine brake on long descents so I decided to start with wheel covers.

But all the moon disks and wheel covers have to be drilled in, or center-cap mounted requiring exorbitantly expenisive (and kinda heavy) wheel, I was out of options other than asking a machine shop to cut a sheet of coroplast in a perfect circle and drill the center cap to mount it with a shaft.

Then I came across this thing called Rim Brim, and according to Amazon reviews they snugly fit onto the rim so I was hoping maybe I'll be able to mount these with medium-strength 3M automotive double-sided tape in 4 or 6 spots and call it a day.
https://www.amazon.com/RimBrim-Prote...01NAYT5MP?th=1
(Can't save images from reviews... so here' s the link to reviews)

It's not the perfect aero shape I wanted, and sticks out a bit. But then my wheels aren't flush with the body nor I plan to make them to. So I think it would be better than the OEM wheels or the Enkei PF01s that I plan to replace them with tax refund. I could maybe cut out the center part that sticks out

What do you guys think ??? And is there any wheel aero solutions I missed for 17" without punching holes the wheel?

Several issues i see with this. The material those are made from is too flimsy to hold up at highway speeds and 3m tape wont hold on them long at highway speeds. Also those would cost you over 100$ for a set of 4. For less money you can install the dust brake shields that go on the inside of the wheels.

https://www.speedwaymotors.com/shop/...35-3-495-30448

And also it's not flat at all.

However, there is hope that something better is still out there.

I don't know. Those 3M tapes hold body parts pretty solid at highway speeds not to mention race speeds. Also those aren't 17"

I see it's not flat AT ALL too xD I was just thinking (hoping) it will be better to have a not flat wall than having 10 thin spokes with wide open wheel face. I'm still looking tho.

I just cut a coroplast disc and zip tied it to my wheel. Getting a perfect circle is the biggest part of the challenge. I just happened to have something lying around in the correct diameter for the 18” wheels on my Outlander. I think I’ve got $30 in the set of four?

Ziptie sounds good... How many did you use per wheel?

how many
 

ROAD and TRACK aero-modded a Porsche 911 with coroplast covers,using only 3-zip-ties per cover. That might be the absolute minimum.

I working on very thin aluminum pizza trays that will be bolted to the lugnuts. Each one cost about $4. The lugnuts will be drilled and threaded on top.

Proper tiewraps come in published strength ratings mostly based on thickness and width. The one use ones are stronger.