Thank you very much for the kind welcome and the helpful advice. I have added a couple of washers to the steering stops and that seems to have fixed my problem. It was actually rubbing on the sway bar and I can't find any other point of contact. The fix was super easy to figure out and I was done in just a couple minutes. I'm glad I don't have to switch them out for narrower tires, because I really do like the ones I got. Thanks again--y'all saved me a trip back to the tire store for a set of tires I'm less enthusiastic about.
Here's Flint Ironstag with his new tires (if the damn photo will load). He may be stock, but he's handsome!