when I get to about 30 mph, my car starts makeing this terrible roaring noise. It vibrates and my dash sounds like it is about to fall apart! When I go around a right hand turn it stops and when I turn left it calms down some but doesn't quit completley. I dont know if it is a bearing in the front wheels, rear wheels, or a cv joint or what the hell it is??? I dont want to buy another sealed bearing for the front, my 98 z24 takes an expensive sealed bearing, and I just changed all 4 bearings about 12,000 miles ago??? I also thought I might have broke the belts in my tires? I wouldnt personally know, could someone tell me how to check to see if that is what it is?PLease give me some advice. Thanks

If it stops while turning it's most likely a hub bearing...

in the front or the rear? I am almost 100% sure the fronts take a sealed bearing, am I correct?

Ok, I painted my brake calipers today, and while I was in there, I decided I would see what was going on. My driver side seems harder to roll than my passenger side. Is a hub bearing the same thing as a wheel bearing? And is there hub bearings on the front and rear or jsut the rear? I am pretty sure it is my front bearing going out.