I own at 2000 RX 300 with 36,000 miles on it. On my recent visit to the dealership for a check up, I was told alll four rotors need to be replaced as they have rusted out. I have never owned a car that needed new rotors after only 36,000 miles. Lexus is saying it is environmental wear and tear. I say, BS! Anyone else out there had the same problem?