[Dr. Phil]

Same here. I think its a combination of crap moving around the car while moving, as well as sucking other crap up from below the car. Is it the effect of downforce? I dunno. But it drives me nuts that the rest of the car is clean but the tailgate is filthy.

No trues words have been posted

The rest of the xiT will still be spotless while the tailgate and rear bumper look like Alan F's wheels And usually too much *dirt* to just detail spray:bawling: