This is why you should use a torque wrench on your wheels!

[Sijray21]

correction: this is why you should use lugnuts on your wheels. even finger tight, that wouldn't have happened (ask me how i know).

how do you know?

i remember i didn't tighten my lugnuts once (passenger-side front wheel). I started driving down the road on the highway around 60mph and started to slow due to traffic. i felt some vibration, it felt as if a wheel was not balanced correctly. I tried to use the nearest exit and the steering became difficult and heavy. When i stopped to look at it all the nuts were still there, but i could see a gap between the wheel and the lug nuts and i fixed it immediately.

i don' think this guy even put the nuts back on, those wheels FLEW off the car! either way - that sucks!