I recently replaced the front brake pads and warped rotors on my 2002 VW Passat 1.8T. All went well and the new pads and rotors are working great and very quiet.
However, I noticed a light metallic scraping sound coming from the front driver side wheel whenever I turn the wheel right. It never occurs when going straight or turning left. And I have to roll down the window to hear it. At speeds > 20+ mph it cannot be heard. (the sound does not get louder with increased speed). And unfortunately, I do not know if it was present before I replaced my brakes.
When I lift the car on jack stands and turn the driver's wheel right and spin it, I cannot duplicate any metallic scraping. So I believe the sound only occurs under load.
I intend to replace my driver's side CV axle as the outer joint is leaking grease, and the grease has made a bit of a mess in the surrounding area around the caliper and wheel hub. I'm not sure if it could be the CV axle, because as far as I know the most common symptom of a bad CV joint is "clicking," but there is no clicking sound (yet).
Wear on brake pads looked pretty even on both wheels, so I am inclined to doubt it's an issue with the caliper.
Could it be my wheel bearing in the early stages of failure? Any ideas on how to analyze this would be appreciated.