I have a 2012 SRT8 Charger 14, 320 miles on it....took my car to the dealer for a oil change and 23 pt inspection and it came back that I need new Brembo front pads and rotors $970....My car never seen the track, nor is there visible of brake dust or any type of grooves in the rotors....What is the avg life span of brakes and rotors on SRT8 Chargers