I must preface this by saying that I drive the car daily, but it’s a ratio of approx 80 % highway, 20 % street , and I also downshift very frequently instead of using the brake pedal ..until the very last step when it’s truly needed. So I have 40,000 mi. on the car now , with the original brake pads ( 2013 car ) which have just been measured roughly three months ago and determined to have about 35 % left on the fronts and about 45 % on the rears. Rotors are in near perfect shape, certainly expected to still be used with the next brake pad replacement , and possibly beyond. Just as a FYI, I have NEVER replaced my rotors with every pads replacement in 40 + years of driving and countless different cars , including Porsches which I have driven far more aggressively and with frequent hard braking than the Maserati has, or will ever see. Most rotors have lasted without significant grooves, or lips or similar wear for at least 80 K miles, with some going past 100 K miles. The only time I have changed rotors more frequently than with every other pads replacement has been on the cars I tracked ..but that doesn’t count for answers to this question and polling, I presume .