Rick's Free Auto Repair Advice

Brake pad wear indicator — Brake pad squealer

Brake pad wear indicator — How does it work, where does it go?

Brake pad wear indicators attach to the inboard pad on the leading edge; the edge that first contacts the rotor when moving forward. Its job is to contact the rotor and make a high pitched squeal once the friction material wears down to 2-3mm.

How brake pad wear indicators work

When the brake pad friction material wears down to about 2-3mm, the soft metal indicator contacts the rotor and makes a high pitch squealing sound

brake pad wear indicator

How brake pad wear indicators are attached to the brake pad

Snapped onto the backing plate

brake wear indicators snap versus rivet
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