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I currently have 13mm / 15mm 4wheelspacers spacers on my '19 m550i and am getting bad vibration in the seat (likely from the rear) at 110kmh+, and it gets increasingly annoying as speeds go up.
I've torque them to spec using a star pattern, used a brushed wheel on the wheel and hub and tried reinstalling them and the vibration persists.
I've contacted my local shop and am bringing back the spacers and am thinking about trying out dinan or H&R spacers.
Our cars supposedly have a 66.6mm centerbore, and all the spacers out there seem to be 66.5 or 66.56, could that be the cause or are they simply rounding out the numbers?
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