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Did you grind or change the rotors?

Turns out there was a pin scraping the rotor

No and they're all in pretty good condition except for the rear rotor on the left but no sound coming from it tho

Take the wheel off and check if something is rubbing on the rotor (clip, backing plate, rust) I'm gonna assume you didn't install the pad backwards

No sir I'll just get a steel brush and clean it then because the old pads didn't even need changing when I looked at them in the first place