Looks like it is time to find someone who raise up the car and can spin or rotate the tires, to see if you have a tire 1) with flat spots or 2) that is coming apart.
There is also a problem occasionally that a bad front wheel bearing can "howl". The vibration in the steering wheel should mean one of your front tires is out of balance, but check above #'s 1 & 2.
God bless your attempts.
Steering wheel vibration is often caused by:
"Road noise" is often caused by:
I suggest checking for all of these.
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