2015 Ford E250 tire balance

F250 Diesel 6.7 liter. Problem with Balance at 40-45 mph and 60-70mph. Tires balanced and rotated 3 times. Same problem. What could be causing my problem. Rims are not bent, tires are new. Please help!

you might want to try “road force tire balancing

if your tires happen to be “not exactly round”, the regular balancing machine can tell wheels are balanced, but you might still experience balancing issues, this is where road-force balancing comes handy

what brand of tires?

I happen to have this problem with my latest Continentals, had similar issues with Dunlop before

If you just got new tires it is sometimes the fault of the tires. I have heard of this problem.