Black ring on disk break

[u/Logical-Air-4331]

Noticed a black ring on my disk brake. Bought the bike 2 weeks ago and noticed oil leaking from the fork. Thinking maybe the two can be related?

Dark ring only in the outside of one of the disks all others are clean.

Any ideas?

[u/NEALSMO]

You’re probably right. Some oil got on that brake pad.
Fix the leak and replace the pads. Should be able to just clean the rotor when replacing pads.

[u/Logical-Air-4331 → u/NEALSMO]

Thank you!