My formula the ones are pretty new just a few hours of use on the bike and the front brake is making a buzzing kinda vibrating sound that gets louder under more load. Noticed it when going downhill its louder. I use the stock formula rotor 8" its drilled with alot of holes and im thinking that might be it? But what doesnt make sense then is the back is silent and the front used to be silent. Is this anything to worry about besides how annoying it is?
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