i had this problem for a very long period of time across several sets of tires. I've found the following to be true both with my truck and following others here on the forum:
- Tires You not only need a set that requires little weight to balance, but they must be roadforce balanced properly by someone who cares/knows what they are doing. The heavier and wider the tire, the more this matters.
- Control arm bushings If they are worn or have any play at all, the best roadforce balance is not going to solve your problems. I had some vibration issues from new and after 10,000 miles issue truly became a problem. several sets of tires, different wheels, and a ton of road force balances later, I thought my LCAs may have been the problem. One set of dirt king LCAs with delrin bushings later, my problem is 100% GONE.