Just had your brakes replaced but they’re squealing like a banshee? Don’t panic! While concerning, new brake squealing is often not a sign of a major issue. Let’s explore the common reasons why your new brakes might be making noise.
4 Common Causes of Squealing Brakes After Replacement
While a persistent squeal might require professional attention, many times the noise is due to simple factors that resolve themselves or can be easily addressed.
1. The Break-In Period
New brake pads and rotors need time to mate properly. During their initial use, microscopic high points on the pads and rotors create friction and vibration, leading to squealing. This is normal and often disappears after a few hundred miles of driving. Avoid hard braking during this break-in period to allow for even wear. Moderate braking helps the pads and rotors to wear in smoothly.
2. Moisture and Surface Rust
Moisture from rain, snow, or even morning dew can cause a thin layer of rust to form on the brake rotors. This rust can create friction against the new brake pads, resulting in squealing. The good news is that this type of squealing is usually temporary. Driving typically scrapes the rust off quickly, eliminating the noise.
3. Overusing Your Brakes
Riding your brakes or consistently braking aggressively can lead to overheating and glazing. Glazing occurs when the brake pad material overheats and hardens, creating a smooth, shiny surface that increases friction and noise. Avoid unnecessary braking and allow sufficient time to slow down gradually to prevent overheating and glazing.
4. Brake Pad Material
The type of brake pad material can also contribute to squealing. Semi-metallic brake pads, a popular choice for their durability and performance, contain metal shavings that can sometimes cause noise when they come into contact with the rotors. Ceramic brake pads are often quieter due to their composition. Consider discussing different brake pad options with a qualified mechanic to find the best fit for your driving style and vehicle.
While these are the most common causes of new brake squeal, persistent or unusually loud noises could indicate a more serious problem. If the squealing persists after several hundred miles, or if you notice other symptoms like grinding, vibration, or reduced braking performance, it’s crucial to have your brakes inspected by a qualified mechanic. Don’t hesitate to schedule a brake inspection at your local Tires Plus for a thorough assessment and peace of mind.
