Quote:
Originally Posted by abehwang
Go to each wheel.. Behind your rotors is a metal backing plate. Push/Jiggle it a bit and you'll get some pebbles to fall out that got flung in there. It eliminated all the noise for me.
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This is the fix, its just the backing plate for the rear rotor hitting the wheel hub.
When customer's would complain about this I would stick a long screw driver through the wheel spokes and just push the backing plate away from the rotor. It would eliminate the noise 99% of the time.
My theory on why this noise occurs is from heat that the brakes produce causes the backing plate to expand which then touches the wheel hub.