I figured I would move this from the Mazda 3 forum to here for future references. This was for my brand new, 1 week and 10 miles car, so don't think your new car is exempt. Others may also find this for cars that were partially submerged, recently replaced breaks or just suddenly came out of left field. This also is a fair warning to those that are installing new calipers.


Wheel Squeal

Patient:
2009 Mazdaspeed 3 (awesomeness)

Symptoms:
Moderately loud metallic squeal, that vibrates the steering wheel and break pedal ever so slightly. It does this at slow rates of speed forwards and backwards, also is typically heard after breaking. It does this both in turns and going straight, has no factor if warm or cold, and occurs randomly.

Prognosis:
Impression is that this may be the break caliper seizing up. Most likely the guide pins are not properly greased or the caliper was dead when it was installed in the factory.

Diagnosis:
Grease guide pins or replace entire caliper (under warranty).

- 09/26/2008
Results:
After some generous greasing the symptoms appear to be gone. We will follow up in a week.