Hey fellas, I felt that the brakes were running bad lately. Recently ( the other day). I tokk her for a ride, and the pedal literally touched the floor with a hissing sounds. Kind of sounded like squeezing air out. When I turned around to check it out, I looked at the rotors, and they were COLD. In other words not hot from the pads NOT touching. Is it the Pads and rotors ? Or because of the hissing sound could it be bad lines too? Please help . I need opinions before buying parts. Thanks guys! Danny