I have the 826 bi-color's and these things are a nightmare to keep clean. Honestly the pads BMW uses create way to much dust. Hopefully there might be some aftermarket low dust pads in the future we can try if they don't cost to much.
I bought some of those wheel woolies and just scrub a dub dub. My pressure washer doesn't do much and I have to scrub every time. I think a coating would help some but I think it's just something were going to have to deal with unfortunately.
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