Is it normal for brake discs to have scratches?

Is it normal for brake discs to have scratches?

Is it normal for the brakes to apply themselves without pressing the accelerator while driving?

When the vehicle just starts, there's a whistling sound from the front wheels, but it disappears after driving for a while. What's the reason? Could it be that a small stone got into the brake disc?

Hey guys, any recommendations for brake discs and pads for the 2019 model? 😊

I've replaced the brake pads and discs on my Mazda6, and also changed the brake fluid, but the brakes still feel very soft and don't stop well. What could be the issue?

Why are there grooves on one of the brake discs of a car that's been used for five years?

Is it normal for the brake pedal of the Nissan X-Trail Classic to make a loud noise when it rebounds and contacts the brake light switch?

Any good tips for fixing wheel scratches?

Did you get your brake pads and brake discs replaced at the 4S shop? How's the quality? I just got mine changed today for 2500 RMB.

Consulting everyone, if I change my manual 30 to high-end 18-inch wheels, do I need to modify the brake discs and calipers?