Here are the details:
2003 Outback Wagon, AT. 166,000 miles
Recently, there has been a pronounced humming noise and mild vibration, only when at speed above 40 mph and turning steering wheel to left side. Any magnitude of left steering causes this hum. When I go perfectly straight or to the right, there is no hum.
The humming frequency changes with wheel speed but not engine speed. It is a mild, low frequency hum that sounds like rough pavement or tire hum, (kind of like a knobby tire or something). It is a noise that sounds like it is coming from the front of the car, but also a mild vibration felt in the floor of the vehicle and the steering wheel.
Right side inner drive axle boot is torn, and axle has been clicking mildly on steep right turns.
All 4 tires just replaced. Noise is the same with the old or new tires. Wheel alignment was just done at time of tire replacement. No difference.
A few weeks ago I had a NY state inspection. No issues noted RE: loose suspension components (ball joint, tie rod, etc.)
I feel I should be looking for either worn suspension or steering parts or maybe a bad wheel bearing. Can anyone give me any further direction?
Edited by BigMattyD, 22 February 2014 - 09:46 AM.