Great replies, thank you. The dealer let me know that it would be about $350 to do the work. He did say I have a little time on the pads but it will be soon. I have 102K miles on the 04 RX330. I took it up to the mogollon rim, so a bit of washboard road driving. I am not sure exactly what he said about the rear calipers, but the jist was that I would need work on them soon. I think that when the mechanic says that things need replacing on my car, he starts sounding like the teacher on a Peanuts cartoon.