You're new wheels might be bent. Another member complained about the same thing when he got new wheels and out turned out to be defective wheels
Can changing from steel wheels to real rims cause vibration in the steering wheel?
The new rims have been properly balanced (I had them balanced twice to make sure)
My car is a 2011 with only 7000 miles on it and plenty of tread on the tires (Hankooks)
The tire place I took it to for a second opinion is telling me that I have flat spots in my tires causing them to be out of round and that its causing the vibration in the steering wheel. The old rims didn't cause vibration so why would the new rims with the same tires do this?
Any thoughts? its maddening
If the wheels are hub centric then it's the tires. if you aren't going to buy new tires, put the worst one in the left rear. I had same issue. If the front driver side tire is the worst one it's the worst spot for it as its the most sensitive to the driver. Try rotating tires - if that doesn't work that uneven wear in the tires is definitely enough to feel a vibration. These cars are sensitive
All of what you are describing sounds to me like your wheels are not centered ,i had the same problem thought it was the wheels,TRythis put hub rings in wheel first they need to be in a tight fit almost pressed in feeling then put on to car i started one bolt in first and tightend all the way ,then began to do the rest in a star pattern. they are right now no vibrations or wheel shake at all even under hard throttle ... re check it if the tires didnt do it before and ther balanced out correctly almost certain wheels are not centered on hub.