I had a vibration in my rear duals with new tires. The dealer performed over 20 tire dismount, spin balance, powder balance and combos rotating through 6 tires for the four positions.
Finally installed a different brand with no balancing and it rode perfectly.
I do not think the brand of tire made the difference. Just a bad batch of tires from the first brand.
Your dealer should make them work or replace them with tires that do work.
My dealer, Les Schwab Tire, made everything right except for my time in multiple shop visits and some nicks in my aluminum wheels.