I've been using the SLX M666 brakes for two years. The original sintered pads have lasted all this time (I've done several thousand miles) and I've only recently replaced them with the G01A resin pads. I did an isopropyl alcohol clean of the rotors when I replaced them.
If I brake lightly, after a few seconds I'll start to get a bit of a honk from the front rotor (RT64, 180mm). If I increase or decrease the pressure the honk goes away.
What can I do?
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Thread: Shimano SLX M666 honk?