Stupid question on brake line.

I also wondered if the curls are needed. I have also heard the anti-vibration theory, but the MC position shouldn't move relative to the body, and they don't curl it other places along the body. Maybe it was to quicken assembly. I wouldn't go out of my way to bend the tubes. In my old Mopars, I made brake lines off the MC from junkyard Intrepid tubes which have a flexible stainless braided section. That makes it easy to move the MC in the future with tubes connected. BTW, "metric" 6 mm brake tubing w/ bubble flare fittings is still 3/16"D (or close enough), so you can cut off the bubble ends and double flare the tube.

A similar question is why the tubes near the outer corners have a wire wrap. I used to think it was to protect from road debris. Then I heard it was an assembly aid so the factory guys could bend the tubes by hand without kinking, just like temporary spring tube benders you can buy. They just left the wire on, which mainly serves to trap road salt and hasten corrosion.