Rear stays dirty

[blktoptrvl]

Any sign of rain and the back of the X is filthy. Anyone found any decent looking aero bits that keep it clean?

[BMWLOVER]

I have the exact same problem. It gets me so bad. I wash it and it looks really good. Once i drive through rain or even in winter it geets super dirty on the back. The rest of the truck isn't even as drty as the back.

[primetime]

Yes keeping the back clean is a pain....It just gets so much kick back from the street all the wet dirt or dust just goes right on the back and stays there.

[BMWLOVER]

Are there ways to stop it from getting so dirty?

[paulgt3]

Mines black and its filthy. The only thing I have noticed is using REJEX wax.
REJEX is not a wax though. IT was a protectant made for airplanes and its found its way over to the Porsche community as a wax type product. The vehicle has to be real clean to use it. Its NOT a cleaner wax. Its just a shine protectant type protectant. The use on aircraft was to keep dirt and bug splats down and easier to clean. You might try it and see if it works. I use it on all 3 cars- the 2 BMWs and the GT3. I dont like it to get a great shine but it does make everything easy to keep clean. Its only about $15. Google it. The only think I can think of.

[JCL]

Originally Posted by BMWLOVER

Are there ways to stop it from getting so dirty?

No, it is a product of the vehicle shape, and the resulting low-pressure zone that draws in spray. There are no aerodynamic modifications that will make a difference; it happens with all station wagons and hatchbacks although some of them have a rear wind deflector to keep the rear window clean. That doesn't work on the X5 due to the standard bodywork at the top of the rear window.