another issue with the brakes on the e36 (not common, but not rare either) is for the actual brake pedal sensor to go out itermittently. I fianlly had mine replaced. I think it was something like $40 parts and labor and my indie shop.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>