Humming noise from the rear end

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Ugh, I’ve got the same issue! I’m thinking it might be the tires since they’re not the stock ones it came with, so I’ve been wondering if that’s the culprit. I’m having it checked out next week to figure it out.
 
Haven't heard of this but do you observe the noise coming from inside or outside? Do you hear it when the window is open? Also try having someone observe it from the backseat.

Also observe your tires. There are reports the tires are making noise.
 

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