Why is it that the rear gets so drity so quickly.
I just waxed my car yesterday. The back end already has a coat of dirt on it. Happens all the time, the rest of the car is shiny, even the front which I would expect to get dirst first.

Must have to do with the way the air moves around the rear while driving. My Alpine shows this so easily and is quite annoying :mad

Brake dust and exhaust, I think.

no, my e36 does it too, mainly in the water channels from the rear wheel wells to the top of the bumper...and my trunk always has dirt on it...well, dust, you know.

Yes dust. Its very light and a rag sweeps it away.
But very annoying nonetheless.