Question about 2004 Audi A4

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2004 Audi A4 1.8T, I have black dust on the rear wheels constantly.

Good evening. I recently purchased an 04 audi A4 and it has 18000 miles. After driving it for a few days I saw that black dust is building on the rear wheels.I wash them but in 2 - 3 days is back and is not from the road. I checked the brake pads and they are ok. Maybe at the owner before me put a wrong type of brake pad, or is it something else? Also I am missing the book that has the service intervals, anybody know a web page where I can get it? Thank you

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Hey XNC!

The black coating is definitely brake pad dust, and there are a number of commercially available wheel sealants / treatments that will help minimize the dust accumulation by coating/sealing the wheel surface, some with a Teflon-like additive. Check them out online or at your local auto supply

There are also physical shields, such as Kleen Wheels, that help control the problem: See: for more information on their product.

This usually becomes a problem when the original seal coating on the rim is scrubbed off or deteriorates, leaving the metal pores exposed to and coated with this accumulation, which sticks to raw metal much more tenaciously than it does to a sealed surface.

Hope this helps and good luck!


Posted on Jun 13, 2008


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Posted on Jan 02, 2017


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