Going to get a front-end alignment and perform my brake/bearing job this weekend. Along with the regular lubing of front-end parts. I'll keep you posted and let you know if that works. I'm fairly certain now that it's most likely an alignment issue. Last time it started performing this way I had that done and it took care of it. Except at that time my symptom was squirrelly steering at highway speeds. It was difficult to keep in a straight line, along with the road noise. This time I've only got the road noise.