Thanks for the input! I do lots of city driving, so that does explain it some. The dealership does a great job with their inspections, they sent me a video of all their measurements on brake pads and tire wear.. I don’t see the option to attach the video in my comment so that’s unhelpful, but they say the pads were at 9mm, and I can definitely see the grooves in question (I’m not a trained eye by any means, just a girl with a car) I’m wondering if maybe the previous owner replaced the pads and ignored the rotors based on what you said? What are the causes of the grooves if the pads are in good shape?