I have a 2015 Ford Escape 4WD with 4 new Fuzion tires. Less than 3,000 miles. When cold, after setting overnight, the front or back tire on?

The passenger side makes a thumping noise as the tire rotates on the roadway at low speeds for about 100-200 yds, then smooths out and the noise goes away. Can't tell if it's the front or rear. They're properly inflated and have good even treadwear.

Any ideas what's causing the noise?

This is normal in the winter. Overnight the weight of the car pressing down causes the part of the tire in contact with the ground to flatten out. Once the car gets moving - it rounds back out. You usually feel this on all four tires. If its just one or two - then they might a tiny bit underinflated from the others or simply just have more weight on them.

Tires get flat spots from sitting sometimes. It is normal

I had a set of Coopers that did that. They get a flat spot only on the bottom though. Has something to do with when you said "Hey I don't want to pay a lot for these tires."

It sounds as though your sub-par quality Fuzion brand tires have flat spots or have gone out of round.

Replace them with better quality tires.

There might be water in the tire and it freezes.