Has anybody tried any sound deadening in their car to reduce road noise?

I already changed my tires, which helped but looking at more sound isolation.
At last, a slim chance, but doesn't hurt to check is the wheel bearings. Faulty/damaged/worn wear bearings will generate quite some noise too, and is often unsuspected.
Right now, I am using Blizzak snow tires and the noise level is 'louder' than compared with Z-rate sports tires.
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On a recent trip the road noise was VERY noticeable but only on certain surfaces/stretches of road. The tires would literally 'sing' in one lane and be quiet on the lane next to it. I usually cruise at 75 to 85 (depending on state
). Is your noise constant regardless of road finish?








