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#249: 09-22-2011, 02:34 AM
2.5GT_dude's Avatar
Title: Senior Member
Location: FL
Car: 05 LGT 5EAT
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You do not need to machine them if they are new (some manufacturers or shops recommend doing so). I never have if the brakes are properly bedded. Some times if rotors are improperly machined they tend to cause an annoying whirring/whining noise. Have you checked to make sure there is nothing wrong with calipers causing them to stick where wear the pads down to the indicator?