What is going on with my disc's

[Funkyboy]

Hi All,

Just completed 90 mile journey and noticed this discoloration on my rear discs. Anyone have any experience is this a potential issue?
Thanks

 

[malcolm E53 AMG]

Probably a good idea to have your rear calipers serviced and cleaned to make sure the pads can slide on the pins the discs look as though they have heat marks on them

 

[Blobcat]

As per above, looks like they might be binding a bit

 

[Funkyboy]

As per above, looks like they might be binding a bit

What's best way to resolve this please

 

[Blobcat]

What's best way to resolve this please

Take the callipers off and service them. Most likely have a rust ring around the inside stopping them retuning into the cylinders. New seals and cleaning up the rust, alternatively new callipers might not be that expensive

 

[AlanGunn]

Pads down to the metal ????.

 

[Funkyboy]

Pads down to the metal ????.

No they are practically new as are the discs