APPROACHING A RED LIGHT ON A DRY SUNNY DAY, MY BRAKES FAILED HALFWAY THROUGH COMING TO A STOP. AT FIRST MY VEHICLE (2011 MAZDA CX-9 SPORT WITH 56,000 MILES) WAS SLOWING DOWN NORMALLY AND THEN SUDDENLY THERE WAS GRINDING/CRUNCHING NOISES AND DESPITE PRESSING THE BRAKE, THE VEHICLE WAS NO LONGER STOPPING. I SLAMMED THE BRAKES, PUMPED A FEW TIMES, AND THE VEHICLE SIMPLY FAILED TO SLOW DOWN OR STOP CAUSING ME TO SLAM INTO THE REAR OF THE VEHICLE IN FRONT OF ME. I TOOK THE CAR INTO A MECHANIC WHO NOTIFIED ME THAT BOTH OF MY "FRONT CALIPERS WERE POSSIBLY DEFECTIVE," AND MY FRONT ROTORS WERE "UNEVEN AND WEARING ON THE OUTSIDE." HOWEVER, MY BRAKE PADS WERE GOOD AND DID NOT NEED TO BE REPLACED. GOOD THING I WAS ALREADY STOPPING FOR THE RED LIGHT; THEREFORE I ESTIMATE GOING ABOUT 10-15 MPH (SPEED LIMIT ON STREET WAS 35 AND I WAS ALREADY MIDWAY THROUGH COMING TO A STOP AT THE LIGHT). IMAGINE IF I NEED TO BRAKE WHILE GOING 60-70 MPH ON THE INTERSTATE! OR WORSE, DRIVING IN THE RAIN! *TR