[Dominik]

Full face, clear visor. My mate killed himself when steam entered the car. While the firewall should have prevented that steam from coming into his eyes, it didn't and neither did his visor-less helmet. We cannot know if the steam influenced his vision at the (drag race) finish line, but we guess it did.

Wasn't it Carroll Smith who wrote: "Racers using an open face helmet should get their brains tested."?

If you spin into the dirt, and your window is open, a lot of debris can enter your car.