Brake pads, rotors and fluid: what wears, and what to listen for
Brakes convert motion into heat, with each component designed to wear or age in a predictable manner. Understanding the wear patterns helps you interpret estimates and identify issues early.
Pads
The pads are the components that wear out first. They press against the rotor and gradually diminish with each stop. Many pads are equipped with a small metal tab that contacts the rotor when they become worn, producing a squeal. If you hear grinding, it indicates that the pad material has been fully depleted and metal is making contact with metal.
Rotors
Rotors experience wear at a slower pace, but they can become scored, rust unevenly, or warp due to heat. A pulsing sensation in the brake pedal during high-speed braking is a classic indicator of rotor issues. If a rotor is still thick enough, it may sometimes be machined smooth; however, if it falls below the manufacturer’s minimum thickness, it must be replaced.
Calipers and hardware
The caliper is responsible for squeezing the pads. Its slide pins and the clips that hold the pads can corrode, particularly in areas where roads are salted, which can lead to uneven wear if one pad sticks. Proper brake service includes cleaning and lubricating these components.
Fluid
Brake fluid absorbs moisture from the air over time. When fluid becomes wet, it boils at a lower temperature, which can result in a soft pedal after hard braking, and it also leads to internal corrosion of the system. A quick test can determine the fluid's condition, and a flush will restore its effectiveness.
Pads wear out first, followed by rotors and hardware, while fluid deteriorates quietly. Listen for squealing or grinding, feel for pulsing or softness, and have your system assessed accurately. You can book brake service online at Maple Ridge Auto Care, where we will ensure the right technician and parts are prepared for you.