Steering Wheel Shake
 

Hello all. I am new here, and I hope that I am in the right place. If not, please direct me.
I have just switched over to my summer rims/tires from my winters. They are brand new rims and brand new tires. My 2004 Mini Cooper has now developed a serious shake in the steering wheel. I've had the tires balanced twice, and I've had an alignment done. I do not know what is causing this. I used to LOVE driving my car, but now.. this shake is actually a bit scary, and I don't much like driving lately.

Is anyone able to help with suggestions, solutions?

hubcentric rings ??