If you go to ceramic compound pads, you'll minimize your rotor replacement in the future. My first set of Akebono pads were installed with new Brembo rotors at 67,000 miles. The pads went 130,000 miles and the rotors showed no measurable wear. Now with 40,000 miles on the second set of Akebono pads, the rotors still look brand new.

2002 X5 3.0 237,000 miles
2004 325i 106,000 miles