Mitch, I had the same question, since my '92 had Eagle IIs on it when I got it. I had some hopes that it was just tire noise because when I drove over a short patch of really smooth pavement the noise seemed to go away (but it was such a short patch I was never sure).
Got new tires and the noise vanished. I think the Eagles are most of the problem, though it's always possible they're just masking the bearing noise. Joe's suggestion should help you narrow it down.
Good luck with it.
BTW, it snowed TWICE here in Santa Fe yesterday.
< of course it's all melted now, but still . . . >