Wheel bearing is very unlikely to come and go at different speeds it is more likely a tread wear probkem. Do you notice any cupping in the tread wear? Do you have different tires you can. Try?

If not, swap sides so the tires run the opposite way (don't keep them that way if they are directional tires).

I have somewhat noisy winter tires. They make a distinct hum from about 25 mph down to 10: sounds very much like a wheel bearing going out.

The reoccurring pattern suggests different things are getting to their harmonic frequency.

Did the problem just start recently? A thrown wheel weight can cause this symptom or a bent rim even more likely.

A clients car has a shimmy at 52-54 mph and then again at 64-66. Is from a bent rim.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)