My experience, exactly! Following advice in this thread, I asked my dealer to recheck the tires. They found heavy wear especially on the inside of the tires. I was told that the tires need to be replaced. They are goodyears with 20,000, and were rotated every 5000. Lexus customer satisfaction said 12,000 to 18,000 was normal. The tires have been loud almost from the start. The are very loud today. Now I know why. Lexus said the will do something, but it will take a few days.