How often are you forced into changing yours due to corrosion? The Trophy is a second car but still gets used a few times a week. Regardless, I find the rear discs especially always end up corroding quite badly. Fronts at the minute are apparently a bit corroded on the inside too, plenty of life left in the pads. The 'bite' to the pedal isn't really there now when braking hard, even after a good few stops from speed. Obviously the heavy front brake bias won't help matters with the rears but has anyone had any joy in staving this off by making sure the car doesn't go too long between a few hard stops, say 60-20mph repeated a few times? Seems like mine are now past the point of no return and will need replaced.