I tried to do a search but nothing related really popped up. I'm fairly new to bikes but I was looking at one and it seems that the rear disc is starting to discolour almost a rust colour.
Is that normal? I'm guessing it indicates that it will probally need replacing soon. Am I right? Can you refinish them or just buy new? By the way it's on an R6.
Thanks for the heads up guys. Just trying to educate myself a bit more!