Is there any surface rust on the rotors when you first get to the car in the morning? If there is then that is most likely the cause. Initially you're grinding off the surface rust which is causing the noise. Once it's gone the noise goes away.
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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock
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