Uneven Pad or Rotor Wear
Uneven pad or rotor wear means one side, one axle, or one face of the brake assembly is wearing faster, often from sticking slides, seized hardware, caliper issues, or improper installation.
Can I Drive?
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Most Likely Causes
- 1
Sticking caliper slide pins
The caliper cannot center itself, wearing one pad faster.
- 2
Pads binding in rusty brackets
Rust buildup under hardware can trap pads and cause taper or drag.
- 3
Caliper piston not retracting
A sticky piston holds one pad against the rotor.
- 4
Rotor thickness variation or runout
A warped or uneven rotor can create vibration and uneven wear patterns.
How to Diagnose It
- 1
Compare inner and outer pads
Large difference between inner and outer pad thickness points to caliper slide or piston problems.
Tool: Jack stands, basic tools
- 2
Check pad movement in bracket
Pads should move freely in the bracket with correct hardware installed.
Tool: Basic hand tools
- 3
Measure rotor runout/thickness
Use proper tools if vibration or shimmy is part of the complaint.
Tool: Dial indicator, micrometer
How to Fix It
Service caliper slides and hardware
Clean brackets, replace hardware, and lubricate only approved contact points.
Replace worn pads and damaged rotors
Replace friction parts if thickness or rotor condition is out of spec.
Replace failed caliper if piston sticks
If the piston will not retract smoothly, replace caliper and bleed system.
Mistakes to Avoid
- Do not install new pads into rusty brackets without cleaning them.
- Do not pad-slap a vehicle with uneven wear patterns.
- Do not ignore rotor runout when braking shimmy is present.