I recently purchased a set of Dunlop tires for my 07 Chevy Impala. They made a noise from the moment I drove away from the dealer. I complained and they checked for balance and alignment--ok they said. I drove about 3 months and still so noisy that I went back and complained again. They ordered 2 new tires (not Dunlop) and put those on. Same noise. After 2 more months I had them rotated--same noise. It seems to be worst around 40-50 mph. No vibration in the steering wheel. Can't hear it after 65mph. This is driving me crazy!