I am replacing the frame on a 95 YJ after buying it in June and driving it all summer. Today I took a look at the brake lines, and was surprised to see that the steel brake line feeding the back brakes was rusted into pieces. The jeep passed inspection in June, and always stopped fine, although evidently only the front wheels were braking. It kind of seems impossible to me, to find the rusted line, gaping open, with no hint of leaking brake fluid. I can only assume the proportioning valve is messed up? Just wondered if anybody here has encountered something like this. Also wondering how it passed safety inspection - I guess the pads get checked but not the lines.