KATNZ28

I Am Hearing This Rubbing Or Rolling Sound At The Rear Of My Car, Mostly On The Right Side. At First I Thought It Was My Tires Rubbing Something. But I Have Checked The Tires And There Is No Wear On Them. I Have Taken It To A Couple Of Places And They Dont Know What It Is. It Has Not Effected The Preformance Of My Car, But Is Really Annoying. I Dont Know If It Is Because I Switched To The 17's C5 Wheels Or What? But I Wanted To Know If Anyone Else Has Heard The Sound Or Could Help Me Out. Thanks