Not really a grinding. More like a 'umph'. 99 Forester S.
Driving from Chicago to Cols, Oh, stopped in Indiana for lunch. When starting in motion with wheels turned, there was a definate 'umph...umph...umph' sound from front pass wheel area. We could also feel it in the steering column. I did not hear this when wheels were straight. Only heard when turning, forward and reverse. I was only in first gear and was to nervous to drive it fast. It was like the wheel got stuck and then would 'give'.
Went ahead and got it towed to the closest Subaru dealer and they took a look at it. Nothing. Wouldn't you know Murphy's Law would interfere? Drove it around for them and everything and still nothing.
Went ahead and drove to Indianapolis and and soon as we slowed down (and turned into a parking spot), we heard and felt it again. Drove around the parking lot, and heard and felt the same noise again...only when turning. Again, did not drive fast.
By this time it was very late in the evening so we decided to press our luck and continue to Columbus. In Columbus, we did not hear it.
Will take to dealer, but have not heard the sound today.
Any ideas? Only when hot (driven for a while)? Ball joint, CV joint, tie rod, bearing??????