Rubbing/wobble sound on '07 Ford Fusion

I have a 2007 Ford Fusion SE 2.3L 4 cylinder. It has approximately 94,000 miles on it. I purchased new Sumitomo tires with a 100,000 mile warranty in February of this year. They were balanced and aligned at the time of install. So far they have been very smooth and quiet with great grip. About 2 months ago I started hearing a noise that sounds like uneven tire wear, a sort of rhythmic rubbing or wobble sound that increases in frequency as the speed increases. It is most noticeable at speeds between 30 and 50mph. I rotate the tires every other other change (at least twice a year) and had the alignment done again in late October.

I am hoping that there is nothing wrong with my virtually brand new tires. Is there anything else it could likely be?

I intended to say I rotate the tires every other OIL change

First guess would be a separated tread, which can make a “wobble” sound as you describe. Try rotating the tires and see if the noise moves with one of the tires.

If it is a separated tread, you might be able to get some compensation under warranty.

PS…a separated tread can be dangerous. Get this diagnosed ASAP.