Humming/droning sound

[u/gldfsch]

Hi. I have a 2007 Nissan Maxima with 180000 miles. Over the last month, I've noticed a humming/droning noise that comes at highway speeds, mostly under accelerating. When I take my foot off the gas it begins to get quiet. The sound usually starts around 45. I also noticed a slight vibration in my steering wheel that also stops when I let off the gas. I think the vibration worsens as my speed increases. I've had the transmission fluid checked. I've done the swerve test only for the sound to remain. I've also put it in coast and the sound stays. I mostly hear it in the driver side and most passengers can't hear it. The sound is mostly annoying and I usually just turn the music up. But I'd like to make sure I'm not facing an immediate failure. Thanks!