If you hear a constant grinding noise from the front brakes, even when not pressing the brake pedal, it is possible the wheel hub has shifted in the steering knuckle causing the brake rotor to grind against the caliper bracket. The hub will need to be inspected (replaced if necessary) and Mazda has a repair procedure for this concern.
Noise due to brake rotor grinding against caliper bracket on Mazda Mazda3
Average mileage: 85,400 (29,000–120,800)
11 people reported this problem
5 people shared problem details
2009 Mazda Mazda3103,000Visitor
replaced my rotors, now the rotor is grinding against the caliper bracket. there is a groove in my brand new rotor from driving less than a quarter mile.
2012 Mazda Mazda329,000Visitor
2007 Mazda Mazda392,000Visitor
Had rotor and wheel bearing replacement on Front Right. Now with slight right turns the rotor is rubbing against the caliper bracket. May be shotty bearing installation or change in shape.
Noise due to brake rotor grinding against caliper bracket only when steering right
2005 Mazda Mazda3120,800Visitor
Rotor has ring ground into it due to caliper rubbing against it. Brake pads are good, only grinds when making left turns. Makes a metal to metal grinding sound with some shavings present on brake caliper mount.
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At what point of wear,do the rotors need to be replaced?