So, I've had this noise and it's driving me crazy. It started about a year ago but it's getting worse. It's a knocking or rumbling noise from the front, heard from the footwell area, that happens every time I brake, especially on a rough surface. Things I changed so far: shocks,top mounts, tie rods, steering rack( I had some free play so thought might as well), discs and pads, caliper bolts, stabilizer bar including bushes, stabilizer links and lower and upper control arm bushings. Only thing I know of that I haven't changed are the control arms, which include the ball joint. I have no clue as to what it might be and my mechanic is as baffled as I am, because he can find nothing lose. I'm now thinking of changing the control arms, but my mechanic is sceptical about it, he said it doesn't sound like the noise of a control arm. Any ideas?!!