why isn't miles to brake service.changing?

[bmrboi2]

From what I've noticed on other BMW's I've owned the brake monitoring system is accurate to a fault. When I had 1200 miles on my fronts in my E60, I immediately yanked the front wheels, pads and rotors and replaced with Zimmerman rotors and Brembo pads. The front pads were thin on both sides which leads me to believe that the system is accurate in it's reporting. Thats the basis I am using just purely on experience. (granted the E60 is not an E70 but logic dictates that the systems are similar but with german cars that assumption doesnt hold much water)