I drive a '99 2500 QCLB 4WD NV5600 with approximately 275,000 with Factory HD T-Style steering. Never aligned and only have replaced shocks and track bar.
Best tires I have had for steering straight down the road, handling and best overall in the most conditions are the Yokohama Geolander A/Ts. The T-Style steering has always had a good feel and been stable since NEW! But the Yokohama Geos have been great.
EDIT: I have also replaced the front sway bar bushings. Installed Energy Suspension bar and end bushings and it really improved steering and overall handling. Even saw a sl