Front / Rear BBK brake line length?

[E46 M3]

Finally getting around to installing a front and rear BBK kit I bought awhile back and need to order some brake lines,

I believe I require M10x1.0 with a banjo end for my calipers, on another forum I noted 550mm is okay for the fronts but I cannot find any info for the rear calipers.

Can anyone assist? I'm getting them made up through HEL.

Thanks!

[toy4to]

I had custom brake lines made for my Brembo bbk a long time ago. I dug up old emails and I have them in 20.5inch lenghts for front and rear.

[E46 M3]

Excellent, much appreciated 🤠