It gets worse when your xB is lowered and has a Fabulous wing on the back.

 

TWO WORDS; California car duster!!!- available at wal-wart for $20. Wipes the dust off in 3 secs!

i have a spoiler as well, and mine gets more dusty in the back then the rest of the car, but the duster takes the dust off real quick...

 

that really makes a difference??
does the fab wing create a air vertex behind the car?
lowering the car also??

this, i'm curious about.

 

I get more dirt due to the increased lowered pressure back there. Does that sound right? Sometimes when I drive down he street at 25 mph, you can see the leaves flying up as high as the top of the window, in the rear view mirror.

I use a car wash a mile from my house. We have nasty treated delta water here and it leaves nasty white spots. So I use the cars wash that filters the water for the rinse.

Once I get home, my back window is already coated w/ road dirt. Rain-X does help.

 

all i gotta say is wow. but the wing and the drop are so important lol.
i'd rather break out the garden hose once a week then loose the spoiler.

 

I think the only answer is to take the cone of a goodyear blimp and attach it to the hatch. Make it extra sharp and no tail-gaters!!!

 

Yup. I rather have the look, and only the back of my xB being filthy than being stock w/ no wing.