The side skirts have been on for around 3,000 miles now. I slapped them on as a proof of concept, but I'm not sure they're the "definitive" version. So, while I work today on making a better side skirt assembly, I took the old ones off.
I noticed that there is much more dirt and grime on the front (leading) end of the skirt than on the back (trailing) end.
Why?
Is it because the tire rotating forward throws more debris to the front, like riding a bike and having the tire send a stripe of water up your back---or is it due to pressure differences inside the wheel well?