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  1. E39 M5 and E52 Z8 Discussion
    I have a mystery 'whirr'whirr'whirr' sound under power. Im thinking its a bearing, but my wheel bearings seem ok. So far I'm hoping/guessing alternator bearings. Anyway, when I push in the clutch it goes away but if I push the clutch in while rolling and rev it I can hear it [seems to be fairly...