steering vibration

I decided to start a new thread since most of the similar threads were old. I have a 2008 Model X 100d that I recently purchased. Overall, I love the vehicle, but there is a concerning issue which recently started that I was hoping for some guidance on. In short, when driving at low speeds...

I have a 1 month old model x (100d) and have the often lamented and well documented steering vibration that occurs between 75-90 mph. To their credit, the local service center is really digging into it and they switched out the front tires and are now looking at air flow damning and ripping...