JD- The dealer once told me of a product that they safely use for this purpose at detailing and for cars on the lot. It is only good for one significant brake application, however, and has to be applied before the water gets on the brakes, so it seemed like a lot of hassle for a little benefit. But maybe if my car spent more time in a garage and less time driving or parked outside fending for itself, this would be helpful. I can't recall the name, but I bet someone at your dealership knows.
I wouldn't try the WD-40 trick --- unless you are tired of speed yellow!
