I had the same problem. As Bridgestones continued to wear the noise got unbearable. Just switched them out for Michelin Latitudes and the difference is unbelievable. Latitudes are non-run-flats because I have a full size spare (eg no third row seat). These are the tires that should be on this car from factory. Very quite with virtually no road noise, yet handle well and have a great traction and wear rating.