noise sounds like tire is not aligned or out of balance - new tires balanced and aligned
on smooth road surface at 40 mph+ sounds like a tire is out of alignment or not balanced. replaced with new goodyear assurance tires balanced and aligned
I'd take the car back to the tire dealer. I ran into this when I purchased new tires once, the belts in the tires were faulty and they replaced 2 of them for me.
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