Hi Suze! Looks like it took a real whack in a sharp hole. You have to compress the tire, then deform the rim to the point where it fails. I know it happens, and there is a lot of force on the wheel, but I'd hate to see the factory wheels failing. Since (I believe) this is the first post, I won't start screaming for a RECALL just yet!
There's a small pothole I must hit every morning. Easy enough to avoid, but, Noooo, bump-bump every day. I'll learn some day! (Maybe I'll fill it in with fast set concrete!) (not..)