Spohn's Journal

wstar

Arguably, a harness bar is always a bad safety idea.

In stock configuration, the safety design with regular seatbelts is that in the event of a rollover, your body can fall to the side a bit as the roof crushes in on you. Once you strap into a 4+ point harness, you're immobilized from falling to the side, and in a rollover without a rollbar your head will take the weight of the car and your spine/neck gets compressed/crushed.

Combining that with what I said above, it seems like the only combined options that don't seriously compromise safety in some situation are:

1) Stock everything
2) 4-pt rollbar + harnesses: still streetable w/o a helmet, can choose harness-vs-seatbelt usage regardless of helmet status (or completely remove seatbelts and go full-time harness).
3) >4-pt cage: not streetable, always requires a helmet + harness.

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