I see a few posts about tires, tires wear, and general tire issues.
Everyone should spead some time watching these videos, well worth your time.
Michelin Americas Truck Tires Videos and Demos Page
I recommend in this order:
Fundamentals of Tire Wear Video
Rapid Air Loss, Truck - The Critical Factor
Runout & Match Mounting
Troubleshooting Vibrations
I'm not pushing any brand or type of tire ... these are just well done videos with great information direct from a major tire maker.