Tire noise after tire rotation. Avon M550 A/S
I had tires (Avon M550 A/S) rotated 4k miles ago. From the get go I noticed increased tire noise, I thought it was either alignment or balancing, or some "high spots" on the tire. Ruled out aligment as it takes several seconds for car to start shifting lanes at 70mph if I let go of the steering. I figured I'd let then wear and become "even" and maybe the noise might go down.
So far it hasn't gone down considerably 4k miles after rotation, The noise is mostly noticeable at lower speeds and up to 50-55mph, when you can hear a "whoop, whoop, whoop" sound and feel some vibration. At higher speeds 70+mph there is increased noise but not "whoop" sound.
So, what does that leave me with? balancing? uneven wear? This is the first time I am rotating the tired after putting them in. I rotate every 10K miles. Any suggestions?. Thx