I ran 10oz's of Dynabeads in my 35" KM2's on 15x5 steelies. They ran great on the road in my opinion. I run 4oz's in my 225/75/R15's on steelies on my Ranger. They run smooth up to 80mph most of the time. Sometimes I get a few vibes, but nothing too bad. I run 11.5oz's of .25g airsoft bb's in the 35" Krawlers on steel beadlocks now on the Jeep. They have some vibes to them, but really, at this point I can't blame the tires. It could be either driveshaft, or the alignment, or something else bent in the suspension. All in all, they run reasonably well down the road for being almost 115 lbs each.
It's not an addiction. It's a way of life.