What Causes the Abnormal Noise from Brake Pads During Startup?
3 Answers
Abnormal noise from brake pads during startup can occur due to rain or other conditions that cause water to adhere to the brake discs. When the vehicle is left parked for a period, the surface of the brake discs can rust. Below is an introduction to brake pads: 1. Introduction: Brake pads are also known as brake linings. 2. Function: In a car's braking system, brake pads are the most critical safety components. The effectiveness of all braking performance is decisively influenced by the brake pads, making high-quality brake pads the guardian of both the driver and the vehicle. 3. Material: Brake pads (brake-lining) are generally composed of a steel plate, an adhesive heat insulation layer, and a friction block. The steel plate is coated to prevent rust, with the coating process monitored using an SMT-4 furnace temperature tracker to ensure quality by detecting the temperature distribution during coating. The heat insulation layer is made of non-heat-conductive materials to provide thermal insulation. 4. Principle: The friction block consists of friction materials and adhesives. During braking, it is pressed against the brake disc or drum to generate friction, thereby achieving the goal of decelerating the vehicle. Due to friction, the friction block gradually wears out. Generally, the lower the cost of the brake pads, the faster they wear out.
Starting with squeaky brake pads reminds me of similar situations I often encountered when driving a taxi. The main causes include severely worn brake pads, rust or debris on the brake disc surface. When a car is parked for a long time, the brake disc tends to rust due to moisture, causing a squeaking sound when starting due to friction. Additionally, poor-quality brake pad materials or improper installation angles can also lead to persistent abnormal noises. In severe cases, it may even affect braking performance and increase the risk of rear-end collisions. I recommend first inspecting the wheel brake components yourself to check for obvious dirt or signs of wear, and promptly clean or polish them. If the noise persists, visit a professional repair shop immediately to inspect the brake system and ensure driving safety. Don’t delay—safety first.
As someone who loves tinkering with cars, I've modified many brake systems. Initial squealing is usually simple: either the brake pads are worn down to the wear indicators, or there's dust or small stones stuck in the brake discs. Especially after rain, the rust on the disc surface may cause a few squeaks that disappear after driving for a few minutes. If the noise persists, check if the installation is secure or if there's a spring return issue. My habit is to first clean the brake discs; if that doesn't work, replace the pads. A cost-saving approach is to buy suitable brake pads online and replace them yourself, but make sure to choose reputable brands and avoid no-name products. Remember to perform regular maintenance to reduce such troubles. If you encounter abnormal noises while driving, slow down immediately and inspect.
