Originally Posted by BMW_E53

Update: Being a Southern California car has it perks lol pistons on both sides were rust free and had virtually no marks on the sides and the seal inside wasn't swelled up or anything so I don't know why the passenger side pads wears out a lot quicker. But my god the boot to protect the piston was a pain to tuck into the bore. Took forever but got it in nonetheless. Flushed the system and wished I had a power bleeder but it is what it is haha. Especially after having a little scare thinking I damaged the seals in the master cylinder. But I checked my brake pedal again and test drove it for about 3 miles of braking and hard braking and whew all is good! Thanks for your help guys!