I don't know what the stock pad material is, but here's something to keep in mind: The stock brakes are very good on the Z (one-time stops, not talking fade here), hence they have good bite. More bite means more wear. It's a trade off -- better braking for shorter rotor life. Many pad manufacturers will state that on the pad description. Something like, "These pads provide increased friction compared with the stock pads. Therefore, rotor life may be shortened."I just had to replace my front brake pads , and turn the rotors with 21K on my 2003 touring W/ automatic. Is this normal wear time for these cars, seems pretty short .
I was told it was the last time the rotors could be turned too