What causes the brake noise in Golf 7?

[StGia]

Here are the reasons for brake noise in Golf 7: 1. If it's a screeching sound, first check if the brake pads are nearly worn out (the warning tab is making noise). If they are new pads, check if there are any foreign objects caught between the brake disc and pads. 2. If it's a dull sound, it's mostly an issue with the brake caliper, such as worn sliding pins or a detached spring plate. 3. If it's a hissing sound, there could be multiple issues, including problems with the caliper, brake disc, or brake pads. Additional information: 1. If the noise persists, first check if there is any brake drag. Poor caliper retraction can cause prolonged friction between the disc and pads, leading to noise under certain conditions. Also, check if any foreign objects are stuck between the pads and disc. 2. If the pads are new, check if the brake disc has grooves, as localized friction can cause noise. If the disc is fine, consider whether the brake pads are too hard or if the noise-reducing shims were installed incorrectly.

[VonMackenzie]

In my over ten years of repairing cars, the brake squealing issues I've encountered with the Golf 7 are mostly caused by the brake pads. The OEM brake pads from VW contain a high metal content—they're indeed wear-resistant, but when cold starting, the hard-on-hard contact easily leads to squealing, especially on rainy days when a layer of rust forms on the discs. A couple of brake applications then sound like nails on a chalkboard. Some owners switch to aftermarket ceramic pads and immediately enjoy quietness. If your brakes squeal for a few hundred kilometers after replacement, it's normal—just apply a few hard brakes to wear them in. However, if you hear sharp grinding noises even with the windows up, there's likely a small stone stuck, and it needs immediate attention.

[VonJayla]

Sis, I've been commuting with my Golf 7 for three years, and the sound of stepping on the brakes early in the rainy season is simply ear-piercing! Later, the 4S mechanic opened up the tires and showed me that a ring of iron rust had accumulated on the outer edge of the brake disc. He taught me a simple trick: find a safe stretch of road, speed up to 60 km/h, and stomp on the brakes hard twice, like sanding and polishing nails, repeating the process twice. Once the metal shavings are worn off, the noise stops. Of course, if the noise persists after driving 5,000 kilometers, it's likely the brake pad wear indicator scraping against the disc, reminding you it's time to change the brake pads.

[JaylaLynn]

Veteran drivers will tell you, the Golf's brake noises come in three distinct sounds. A high-pitched squeal like a mosquito usually means uneven new brake pad surfaces; a grinding noise like sandpaper indicates worn-out pads with the warning shim scraping the rotor; the scariest is the metallic clunk during hard braking - that's a loose caliper! First, check tire grooves for trapped pebbles yourself. If none, visit a repair shop for lift inspection. To save money, you can buy anti-squeal paste on Taobao for pad backs (NEVER apply to friction surfaces!).

[Oscar]

Brake squealing is similar to rubber shoes slipping on water, the root cause being improper contact surface conditions of the metal. Last year, my Golf's front right wheel made noise, and upon disassembly, I found the lubricating grease on the caliper guide pins had dried into chunks, causing the brake pads to rub against the caliper. Some owners who modified their wheels didn't install them properly, causing the heat dissipation plates in the wheel arches to deform from contact with the wheels, resulting in scraping sounds when braking. Additionally, after rain or prolonged parking, if the surface rust on the brake discs isn't worn off properly, it can also cause squeaking sounds, which is a benign issue.

[LaPenelope]

Follow my troubleshooting sequence: First, check if the brake pad thickness is less than 3mm—replace immediately if so. Next, feel the disc surface for obvious grooves. Then inspect the inner side of the wheel hub for scratches. Once, my car made an unusual noise, and it turned out to be a pea-sized stone stuck between the brake disc and the shield. If the noise persists after ruling out these issues, it's likely due to a stuck caliper needing maintenance. Finally, never ignore steering wheel vibration during hard braking—it's a dangerous sign of warped brake discs!