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E90 2008 335XI 6AT, minor vibration 58-65mph
Have a low hum (maybe 50hz?) and not loud, say 50db hum/shimmy/vibration precisely between 58 and 65mph. Tires have been balanced several times, this is NOT a wheel bearing noise... I did inspect the front driveshaft however I did not remove the exhaust/heat shield to inspect the rear driveshaft/guibo/center bearing.
This condition is not affected by load or suspension travel / movement or even rpm. It is strictly speed dependant and tends to lessen/worsen day to day.
It's something most wouldn't notice and I've been told it's tires... but I don't want to replace half worn tires to find it isn't, any pointers?
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