Had a vibration in the back end on braking. Pulled a wheel and whoa...brake rotor is just disintegrating. Pads aren't even half worn. Replaced both rear rotors and put ceramic pads on. Checked front and same thing is starting to happen up there. Anybody know of any defects, or have a similar situation? I'm kind of baffled as to what could have caused the rotors to break down, as the pads were actually in pretty darn good shape aside from the grooves cut in them from the rotors. I only have 28k miles. Along related lines, anybody replaced the front rotors yet? They look a little screwy and a walkthrough on removing them would be helpful. Thanks in advance----