• Bent rotor? Rotor bolts not tight enough? Misaligned caliper? Unevenly worn pads? Loose caliper bolt? Worn pads?

    Nope, holes in rotor isn't the issue.

  • Yeah, almost certainly an alignment issue.

    @nejib have you tried undoing the caliper bolts and re-aligning the caliper? Worth taking the pads out, give them a light scrub with sandpaper and reinstall.

    Is the noise constant or only when applying the brake?

  • It was only when braking, plenty of clearance. I had already cleaned rotors with iso and sanded pads. Realignment seems to have got rid of the clicking noise, just back to a "contaminated" sound so maybe new pads in the future or a long ride through the mud. Thanks to you and @coventry_eagle for the replies!

About