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      12-31-2019, 10:46 AM   #109
byroncheung
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United_States
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Drives: e90 m3, 997.2 c2s, x166 GL450
Join Date: Nov 2014
Location: Westchester, NY

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i know everyone emphasizes importance of cleaning the mating surfaces with wirebrush / sandpaper in wheel spacers installation. but i'm just curious why vibration tend not to occur without spacers? if there are rust build up on the the hub / back of the wheels, even without spacers, the wheels won't seat flush and should vibrate as well? but every time i had vibration issue with spacers the vibration will disappear when i take the spacers off?
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