Wow!
I had something similar happen to me with a boulder. I was driving on a mountain road at night, in heavy rain, in a BMW 533i. As I came around a corner a boulder about 18" in diameter rolled down the hill onto the road. I tried to avoid it, but could not. The left front wheel hit it hard, and rolled over it, the car flipped on two wheels momentarily, but came back down. It bent the rim, suspension arms, and front sub-frame. Surprisingly, it did not blow the tire.