Lines on front rotors?

[edunn14]

Noticed these yesterday. I really don't think they are cracks; they don't catch my fingernail. These are one pic each of both front rotors. They don't continue past the contact patch with the brake pads. I have noticed 0 change in how the brakes function; stopping power is the same, no shudder, firm pedal, normal squeal from Brembos, pads have TONS of life left in them, etc. Only change recently is that the car is no longer daily driven, so it sits sometimes for up to a week between drives in a non-temp controlled garage (in Florida).

Just curious on some second opinions based on these pics. My gut based on some posts in the GT forum/elsewhere is that no action needs to be taken due to not catching a nail and not being anywhere other than where a pad may have sat.

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[pilotgore]

Noticed these yesterday. I really don't think they are cracks; they don't catch my fingernail. These are one pic each of both front rotors. They don't continue past the contact patch with the brake pads. I have noticed 0 change in how the brakes function; stopping power is the same, no shudder, firm pedal, normal squeal from Brembos, pads have TONS of life left in them, etc. Only change recently is that the car is no longer daily driven, so it sits sometimes for up to a week between drives in a non-temp controlled garage (in Florida).

Just curious on some second opinions based on these pics. My gut based on some posts in the GT forum/elsewhere is that no action needs to be taken due to not catching a nail and not being anywhere other than where a pad may have sat.

Totally normal and absolutely fine. You’re seeing remnants of where the brake pad stops when the car comes to a rest and sits for a period of time. Next time you drive the car stomp on the brakes a few times and they’ll be gone. After sitting for a while you’ll have new deposits in different areas.