What could be causing a grinding noise from the rear passenger side when braking all the time and not just at first?

If you're hearing a grinding noise from the rear passenger side when braking all the time and not just at first, there are several possible causes: Worn Brake Pads - If your brake pads are worn, they may be grinding against the brake rotor, causing the noise. Damaged Brake Rotor - A damaged brake rotor, such as one with grooves or warping, can cause the brake pads to grind against it, causing the noise. Loose or Worn Wheel Bearings - Loose or worn wheel bearings can cause the wheel to wobble and make a grinding noise when braking. Faulty Brake Caliper - A faulty brake caliper can cause uneven pressure on the brake pads, leading to grinding noises when braking. Solutions to this issue may include replacing the brake pads, resurfacing or replacing the brake rotors, replacing the wheel bearings, or replacing the faulty brake caliper. It's important to have your brakes inspected by a professional mechanic as soon as possible if you're experiencing grinding noises. Ignoring this issue can lead to further damage and potentially dangerous driving conditions.