Worn Brake Pads or Rotors
Worn brake pads or damaged rotors reduce braking performance and can cause grinding, squealing, vibration, and longer stopping distances.
Can I Drive?
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Most Likely Causes
- 1
Pads worn to minimum thickness
Friction material wears down with use until the backing plate gets close to the rotor.
- 2
Rotor scoring or heat damage
Metal-on-metal contact or overheating can score or warp the rotor surface.
- 3
Poor-quality or mismatched parts
Cheap pads, missing hardware, or uneven rotor surfaces can cause noise and poor braking.
How to Diagnose It
- 1
Inspect pad thickness
Look through wheel spokes or remove wheel to measure pad material.
Tool: Flashlight
- 2
Listen for grinding
Grinding during braking usually means severe pad/rotor wear.
Tool: Observation
- 3
Check rotor surface
Deep grooves, heavy rust, blue heat marks, or cracking require repair.
Tool: Visual inspection
How to Fix It
Replace pads and hardware
Use the correct pads and replace clips/hardware.
Replace or machine rotors if needed
Rotors must be within minimum thickness and surface limits.
Fix caliper problems causing uneven wear
Do not install new pads onto a stuck caliper.
Mistakes to Avoid
- Do not replace expensive parts until basic checks confirm the fault. Many symptoms have simple electrical, fluid, fuse, or connection causes.
- The symptom comes back after a basic repair
- Warning lights or fault codes are present
- The vehicle is unsafe to road-test
- The repair requires vehicle-specific diagnostic equipment