After new pads and 450 miles, why do I get a grinding sound whenever I apply my breaks?

Question

At Sears they replaced my pads and turned my rotors, but a few days later my right front wheel started squeaking (like a mattress) and then grinding (like an old, rusty door hinge), even after the 500 miles Sears wanted me to wait because some sounds were normal after new pads. There were grooves cut into my rotor (2003 Mazda Protege5, front and rear disk breaks) by the time I brought it in. They turned the rotor and it was fine, but then a couple of days later- same noise. They then replaced the pad, saying was defective. A couple of days later, continuing up to now (2 weeks/ 450 miles later) SAME PROBLEM! Help!

ps When I drive through a puddle (often in Orlando, FL), the noise disappears completely for a little while.

Answer 1

If it is a squeling sound it could be normal, metal on metal takes a while to stop making the sound. If it is a grinding sound, they you likely have a problem. A lot of times the brakes are not equally applied on both sides of the rotor, which could cause the grooves. Usually this has something to do with air in the brake lines, bad hoses, or a master cylinder. Keep taking it back till it is right!

Answer 2

squeaks and squeals are the most common complaint and are due to worn tired caliper mounting hardware,antirattle springs, cheap pads and poor rotor finish... rarely affects stopping but the noise can be miserable.. sometimes the only fix is to buy oem pads and rotors and all hardware kits from the dealer and start over

Answer 3

I would continue to take it back until it is right. Don't wait, they are hoping that the noise will either go away or you'll get used to it and stop complaining.

Answer 4

could be: cheap pads, rotors cut too thin, caliper sticking, hub bearing noisy or loose, or they just don't know how to hang pads properly on that car.