I'm paying 1500 each for cast wheels?! that's HRE forged 3 piece 21" prices. damn.
Sometimes it's so subtle that you won't notice it, except at specific highway speeds. Mine were discovered when I got my wheels rebalanced using the same Roadforce Balancer used by Tesla service. That machine is sensitive enough to detect very small deviations from true. Three of my 21" wheels are out of true, even though I don't use them in the winter, and I'm a very careful driver. But Tesla's cast wheels appear to be so soft that a less-than-smooth railroad crossing can bend them. The weight of the car has a lot to do with it. Tesla should switch to a forged wheel. That would reduce the number of bent wheels considerably.