2007 Chevy Cobalt Raccoon is the cause?

I had 4 semi used Michelin tires put on my car some time last month. Ever since I've heard more road noise but now the noise is really quite loud and seems to be originating from the passengers' side. There's a little bit of a shake as well, but nothing that seems like more then a bit of added vibration. Oh, and the reason I needed tires or at least one tire was because my passenger side front had alot of outer wear on it with some of the wire showing. I went to discount tire and I was told that they balanced the tires so I don't believe that would be the issue. Plus months before this I hit a really large raccoon with the right side of my car....it ruined my radiator and air conditioner so I woudn't be surprised if it did something to that wheel. I'm not sure...HELP!