road noise...

i am getting this noise at 35mph and above. I think its coming from the rear since I had new front tires put on but that didnt cure the problem. Last year i put new rotors and pads on so i know it cant be a warped rotor. The rear tires still have a decent tread depth remaining and is even across. So my guess is that the tire itself maybe outta round or the rim needs to be balanced. I dont get any vibration just this noise like i am running big ol mud tires. anyone experience this or have anyother ideas? thanks

A quick easy way to check the rear tires is to swap them out, one at a time, with the spare/donut, and take it and take it for a few test rides....

I've always thought my GTP was a little loud from the rear end. From what I've read, one of the things that makes the GTP so quick is that's it's light. Not much sound padding in the car anywhere. My S10 Blazer is WAY quieter than my GTP, but 1,000 pounds heavier.