Brake caliper cleaning.... Bit of help required

[Paddy_R]

Folks as most of us have been doing in these times of little else to do I've been cleaning the car. Now I have the big E Class Coupe to a pretty good level (mostly down to the ceramic coating @big_pete put on it a year ago) however the brake calipers are being stubborn with some 'staining' from what I assume is brake dust as can be seen in the pics below:

I've tried everything I have to remove these marks... Fallout remover, tar/glue remover, APC and good old soapy water but they won't shift. Now I know the Mercedes calipers have a slightly textured coating but they should still clean up.... I hope. Not the end of the world if they don't but would be nice if they did.

Any help appreciated.

 

[Ghisallo]

I imagine that @Big Pimp 's UltraBrite would make light work of that

 

[Cossers]

They could be just pitted and nothing you can do but have you tried iron x? My Fife’s car is the only one that needs deep cleaning and I find it fantastic tbh!