Coils in hard brake lines, purpose?

Im with Bryan on this one. They are for vibrations only.

Bryan is absolutely right. Brake fluid when under pressure will take the path of least resistance. Provided the entire system is free of air and all components are in good working order, the vehicle will apply equal pressure to all wheels unless metered by a valve of some sort splitting the pressure between axles regardless of line length. They are merely there for vibration and to allow some flexibility. Even unibody vehicles flex while driving and almost always while braking. The firewall does have a tendency to flex as the pedal is depressed. Take a look under the hood sometime while you have someone else depress the pedal. Almost always you will see some deflection. These coils aid in reducing metal fatigue. Hope this helps some.

Late

well i like the theory of flexing ,i have never really gave it any thought really.however the theory of equal pressure i would disagree with for the fact that front brakes are bias about 65 percent.also the some hondas have a left rear right front ,right rear left front valve so that kinda disproves that one but i do like the body flex one

yep for vibration and flex

just because some cars use different pressures for different parts of a system has nothing to do with the theory of hydraulics which is liquid is not able to be compressed so the pressure would be the same no matter the length of the brake lines.