I do have them mounted about 3" under the car, instead of under the bottom edge.
I wanted to use just one bolt at each end (instead of the two, since their heights were off-set). And, I wanted that bolt to be in the center of the bottom(my top) of the gutter. Just in case I wanted to use a large washer inside.
It will be a simple task to remove them and drill some new holes, so that
they are not so far under, if I decide to make them less stealthy.
If I were to bring them out 3", I think the bottom flare would kinda look like a little running board..
Anyways, the outside edge lines up with the center of the tire pretty close.
I'm wondering if it will have some effect on the turbulence coming off the front tire.?. Maybe it will split the turbulence and channel it down towards the rear..
Now, I'm thinking maybe a small rear tire-air-dam to defect the flow off the rear tire..
The goal here is to block some of the cross-winds from getting under the car. I'll be testing that concept by watching my MPG during highway driving. I'm not expecting to see big effects like the inventor? is claiming.
If I can get some kind of boat-tail attached to the rear hatch, that might show some noticeable gains.
I'm hoping the mods I'm doing with all add up to 35 MPH highway.
If they do, I'll be one happy sailor..