BMW sells the brake lines really cheaply. They come in straight sections, but are cut to the correct length and have nice flares and nuts on them. If you take the front wheel liner out (a few screws and maybe 6 plastic rivets) then you have good access.

Seems way faster. And, yes, they might rust out in another 10 or fifteen years, but I think by then everything else will have failed, too.

__________________
David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles