2013 BL Vibration Problem After New Wheels that have been balanced

Been dealing with this for almost a month now. I got some Kudo wheels put in my 2013 BL Sedan, with the tires being swapped over from the previous wheels. The tire shop ripped the bead on one tire, so one wheel has a tire that is a year newer than the others, rear left. Since that day, the car has had on and off vibration while driving. I took it back three times to get the wheels rebalanced, and then got fed up and took it to my local mechanic shop instead of the tire shop. They balanced the wheels, as they were still not right, and did an alignment. Seemed okay for a while, but now sometimes, most noticable on the freeway, there's a vibration again. It's minor, just enough to feel in the wheel and the car a little bit. I have hub centric rings, all the lugs are tight, I checked the motor mounts, they seem okay... what on earth is going on? I just want a smooth ride again!

If anyone has any ideas, please feel free to tell me! Car has 153,000 miles on it.
 
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