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  1. Pulsing humming sound and vibration from the pedal at speeds >60

    Alfa 147, 156 & GT
    So basically, when driving on the motorway a vibration and humming pulses above 60mph. I can only describe it as like driving over the rumble strip for 1.5 seconds and then off for 1.5 seconds and then on again - son on so forth. I just had it serviced and the bearings apparently are fine...