I have noticed my car breaks have become squeaking - so I asked my mechanic to check them, and he replaced the discs and pads, on the front, but now they are squeaking all the time when i apply my foot break, even lightly, Its really embarrassing when in traffic - can anyone help. My mechanic said my back breaks would be fine, but i dont think he's even checked them - is there any other reasons for the Squeaky breaks or should i just go somewhere else to get the back ones checked? thanks