I have an Audi A4 with approximately 35k miles. My dealership has recommended that I replace both the brake pads and the rotors and helpfully forwarded a picture to me of the rotors indicating the rust around the edges. My understanding from doing a bit of research is that the rust itself is nothing to worry about and the surface area of the rotors do not appear bad at a glance... but I'm no expert. Thoughts?

![Rim of rotor](https://i.stack.imgur.com/1bI8Ql.jpg)