What Causes the Noise After Installing New Brake Pads?
4 Answers
The reasons for noise after installing new brake pads are as follows: 1. The old brake disc was not polished when installing new brake pads, resulting in poor fit; 2. The braking system itself has defects, causing the brake pads to only partially contact the brake disc. This increases the pressure per unit area during braking, leading to noise. It is recommended to check components such as the caliper and guide pins. More related information is as follows: Brake pads are generally composed of a steel plate, a bonded heat insulation layer, and a friction block. The steel plate is coated to prevent rust, and the coating process is monitored using an SMT4 furnace temperature tracker to ensure the temperature distribution during coating meets quality standards. The heat insulation layer is made of non-heat-conductive materials to provide thermal insulation.
I also encountered noise issues when I first installed new brake pads, which was quite annoying, but don’t worry—it’s very common. New brake pads need a break-in period, just like new shoes need time to adapt to your feet. You’ll need to drive a few hundred kilometers to let them properly seat against the brake rotors. If the calipers or slide pins weren’t thoroughly cleaned during installation, residual grease or dust can cause friction noise. Loose mounting bolts can also lead to squeaking. I’ve dealt with this myself—taking the time to check installation details, like cleaning and relubricating the slide pins, often resolves the issue. If you opted for lower-quality pads, poor material can also cause persistent squealing. If the noise continues after the break-in period, it’s best to visit a professional shop to check the rotor’s flatness and prevent safety risks. Quick fix: brake gently, avoid hard stops, and take a highway drive to see if the noise disappears.
Common causes of squealing include rough installation, such as uncleaned calipers leaving debris, or dry guide rails lacking grease—I'm just a DIY enthusiast and encountered this issue when installing pads without applying lubricant. It's advisable to first check the fasteners and brake connections; new pad materials might not match the original rotors, and harder pads are prone to squealing. Lower-quality brands are more likely to have issues—you get what you pay for. Related angle: Don't just focus on the pads; check if the rotor wear is even. If unresolved, squealing can worsen braking distance, requiring time for DIY fixes or professional help. Remember to gently brake for a few hundred miles of city driving to let them settle in. Safety tip: Avoid highways if squealing persists to prevent brake failure. In short, paying attention to details can save a lot of hassle.
Veteran driver shares experience: New brake pad noise usually stems from improper bedding-in or sloppy installation, such as poorly lubricated caliper slides. In many cases, the noise disappears naturally after some driving; if it persists, suspect material issues—substandard pads or uneven rotors. I've encountered similar situations after replacements—gently braking for a week or two to allow proper bedding. Don't ignore it, prolonged noise affects braking efficiency. Simple solutions: Check installation stability and clean components; if unresolved, replace with quality pads. Safety first, don't delay.
