New here 2008 Aveo Question

[dwalk1255]

I bought my daughter a 2008 Aveo LS, about 2 months ago it started a roaring in the rear when driving 40+ mph and has gotten louder now at slower speeds and at 65-70 you cant hear the person in the passenger seat talking to you.

1. So I got in there and the shocks were weak so I replaced both sides (a little change but not much)
2. ok maybe tires are bad. bought new tires mounted and balanced (quietened down for 3 days but not gone)
3. ok last thing I thought it could be bad bearings ordered 2 new complete hubs from rock auto Installed them (no change at all)

I am about 600 bux in on trying to fix this I am about to toss it get her a different car. unless someone has another suggestion.