Although I'm new to the forum, my Trac has 172K on it. I chased a rubbing sound in my front end for a year.
I noticed when my hubs were on their way out that the noise and vibration would increase with speed and turning at speed in one direction but not the other. However, for the rubbing:
The noise started like a rotor out of round so I changed the rotors and pads. It was better for a day then came back. Over a years time I changed; wheel hubs, Tires, outer tie rods, sway bar links and mounts, inner tie rods, CV joints, upper and lower ball joints, front drive shaft. Basically, every moving part in the front end. With each new part, the front end got a little better.
Understand, I'm not advocating being a parts changer but, my eureka moment was when I realized, there was more brake dust on one side versus the other. Turns out, my caliper was sticking causing the rotor to go out of round in very short order. The upshot is, I have a new front end. Which was needed anyway. I plan to keep this truck for a long time.
JC