Squeal vs. grind
A squeal is a much lighter sound than a grind, and often intermittent — first thing in the morning, then gone.
A high-pitched squeal when braking is usually harmless — but not always. Here is how to tell the difference.
High-pitched, not grinding
Goes away once warmed up
A small metal tab is designed to squeal once pads reach about 20% life left.
Brake dust or a glazed pad surface can squeal without indicating real wear.
Some aftermarket pad compounds squeal by design even when perfectly fine.
A squeal is a much lighter sound than a grind, and often intermittent — first thing in the morning, then gone.