Why does my car hum/vibrate when veering to the right at high speeds? on 2005 Cadillac STS

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My car hums/vibrates when I veer right at speeds over 60 MPH. Installed new tires, brakes, front and rear left wheel bearing assembly units, and had the car aligned obviously. Problem still there. Any other ideas?
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what about the right side wheel bearings?? if 1 fails, the other is usually close behind. we replace them in pairs.

You say if one fails, but the hum hasn't gone away after replacing the left side. Doesn't that mean that they hadn't failed?
they??? did you replace the other side?? if the hum is still there, then some other bearing has failed.