front wheel noise

[toomuchtraffic]

My 190D has a scraping and sometimes chirping noise coming from the drivers side front wheel. Started out as a whistle but turned into scraping. This happens after I drive the car about 3 miles and it can come and go. I changed the wheel bearing, no change. Today, I jacked up the car and turned the tire. I hear a intermittent rubbing sound but still don't know the cause.