any idea where it's coming from? interior, front, back, under hood ? could be a wheel bearing but i would think it would keep making noise at any speed and get worse the faster you go, you can check them easely though, jack up car and check for end play on each wheel, i.e. just bought a rf for 106.00 ouch, it was beck/arnely from an import parts dist. though, as advance auto would have to order and i was in desperate need, other than in suspension, does it sound electrical? i.e. when radio on is it worse? like feed back through alt. or something ? just some ideas, hit back with some more details, when and where from