I just purchased a set of Michelin Latitude X Ice & Snow tires in the 235/55/18 size. At approximately 50 MPH, the tires made such a loud "droning" noise that you had to raise your voice inside the car to carry on a conversation. I took the car back to the tire dealer, where they were checked out the problem. After driving the car, they stated that although the noise was excessive, it was just the fact that the tires were an aggressive pattern and there was nothing to be done. The tires have the correct air pressure, and they are balanced. I'm going to replace them under a 30 day ride guarantee, and would like to know if anyone has the Pirelli Scorpion Ice & Snow tires on a 2004 (or newer) RX330. If so....please comment on the tire noise from the Pirellis, as well as how the tires handled in the snow.