Answer:
Step-by-step explanation:
Determining whether you need new rotors or just brake pads requires some observation and consideration of the following factors:
1. Brake Performance: If you notice a decrease in braking efficiency, such as longer stopping distances or a spongy brake pedal, it may indicate worn-out brake pads. However, if you experience pulsation or vibration when applying the brakes, it could indicate warped or unevenly worn rotors.
2. Visual Inspection: Remove the wheel and visually inspect the brake pads. If the pad material is worn down to less than a quarter of an inch (around 3-4 millimeters), they likely need replacement. Additionally, check for any cracks, chips, or uneven wear on the rotors. If the rotors have deep grooves, are severely worn, or have heat spots, they may need to be replaced.
3. Squealing or Grinding Noises: If you hear high-pitched squealing or metallic grinding sounds when braking, it is often an indication that the brake pads are worn down to their metal backing. This suggests the need for new brake pads. However, if the noise is accompanied by pulsation or vibration, it may indicate issues with the rotors as well.
4. Visual Indicators on Brake Pads: Some brake pads have wear indicators built into them. These are small metal tabs that will start making contact with the rotor when the brake pads are worn out. If you see these indicators in contact with the rotor, it's a clear sign that the brake pads need replacement.
5. Professional Inspection: If you are uncertain about the condition of your brake pads or rotors, it is always recommended to consult a professional mechanic. They can perform a thorough inspection and provide an accurate assessment of whether you need new brake pads, rotors, or both.
Remember that the condition of both brake pads and rotors should be considered together, as worn-out brake pads can accelerate rotor wear and vice versa. It's important to address any issues promptly to maintain optimal braking performance and ensure safety on the road.