I've run stainless brake lines on various pro street cars I've had, along with custom & factory motorcycles, since the late 70's & have yet to have a failure.

I've also used the rubber lined stainless on my fuel lines with the same results.

DO NOT use standard rubber lined stainless hose on any brake system - they are spongy & could fail do to line pressure. Teflon lined braided stainless IS the way to go.

I've also seen DOT approved black plastic "type" lines being used on some custom bikes.....I've not tried it yet....so I can not render a coment.

Regs