Motoring Discussion > Fiesta fins. Miscellaneous
Thread Author: Old Navy Replies: 6
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New Fri 1 Oct 10 16:28 
 Fiesta fins. - Old Navy
Does anyone know the purpose of the small plastic "fins" on the rear of the rear wheel arch near the body/ bumper joint of the current model Fiesta?
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New Fri 1 Oct 10 16:36 
 Fiesta fins. - bathtub tom
To keep the back wheels behind the front?

Early Sierras had 'ears'.
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New Fri 1 Oct 10 18:18 
 Fiesta fins. - Iffy
...Early Sierras had 'ears'...

Ford put a barely noticeable wind deflector around the rear three-quarter windows of Sierras to cure a 'wander' at motorway speeds.

It worked, so owners said at the time.
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New Fri 1 Oct 10 18:29 
 Fiesta fins. - Runfer D'Hills
It sure did Iffy. I had one without and one with and the second one was much improved at um...higher speeds...
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New Fri 1 Oct 10 18:29 
 Fiesta fins. - Old Navy
I remember the Sierra deflectors, I would think the Fiesta fins are too small to have an aerodynamic effect on stability. They may cause turbulence to deflect dirt, the dirt deflector moulded into the lens of my rear lights is much larger, but is unobtrusive as it is transparent.
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New Fri 1 Oct 10 18:33 
 Fiesta fins. - Iffy
...I would think the Fiesta fins are too small to have an aerodynamic effect on stability...

Maybe, but the Sierra one were barely an inch deep at their widest point.

I would have said the same about them.
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New Fri 1 Oct 10 18:52 
 Fiesta fins. - Zero
But they were long and curved around the rear 3/4 windows.

Mine had them. They also had to dump the aerodynamic wheeltrims.
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