so i swapped a bw 9 bolt in a month or so ago and for a few weeks now its been ticking, i thought it was the rattle clip on the pad but i got under there and checked it out and its not. it ticks all the time while im driving except for when i hit the brake which is why i thought it was the brake, im pretty sure its coming from the rear of the car but just recently i'd say the last 2 days i notice when i drive real slow i can feel the front passenger side disc almost grind its a real shiesty noise but only does it at real low speeds, the pad is low but not that low, at any rate im going to replace the front with new calipers, rotors, pads tomorrow, anyone have any ideas? im hoping that the noise was somehow making its way under the car or it was so loud that i could hear it on the other side but thats probably not the case,, sorry for the length

 

well i replaced all the brakes this morning, had one warped rotor, but its still ticking so it must be from the back, its full on fluid and i used redline diff fluid so i dont need to add the posi additive, any ideas?