disc marks

[unfazed]

If it's the left disc then marks are most likely cleaning fluid marks after being on the side stand . They are probably on the inside of the right hand disc and nothing to worry. Just check the thickness of the disc as others have said and replace them if necessary. I use EBC Sintered pads and never had any issue with them wearing the discs just great brakes. My discs lasted too 70,000 miles and that included track days and city riding to and from work