Hi Max
I did have a tire now & then in my past yrs. that were defective within the belts. Best way to rule this out is:

a. Block the front & rear of one tire to prevent any unexpected roll away of your car.
b. If it's one of the rear wheels your checking, put trans. in neutral & keep the hand brake OFF. Obviously a level surface is req. for this type of check.
c. Jack each wheel up one at a time just to point where you can turn it freely by hand, but no further.
d. Take any very squared off block of wood (2 x 2 of 4 x 4 etc) with a length that runs at least across the entire tread or more & keep firmly placed on the floor just about 1/8 inch in front of the tire. SLOWLY turn the wheel by hand & see if it the 1/8 inch equal distance around the entire tread holds.

Since you mentioned you can feel it rather than hear it, this will rule out a defective tire. I had my tires react this way when I would rotate them. Some belts didn't like to reverse direction, but I know your case doesn't involve having rotated your tires.
Hope this helps.