Sign of Brake Pad Wear & Uneven Pad Wear
Your vehicle’s braking system plays a very important role in keep you safe. And because of this, it’s especially important to maintain your braking system properly to keep it working in order. This system employs a number of components and one of the most important components is the brake pad. These pads sit inside the brake callipers and clamp down onto the rotor, acting as a source of friction and providing you with stopping power.
Brake pads fall under the consumable category when it comes to car parts. They wear down over time and eventually need replacing. Because of this, it’s important to keep an eye on the amount of brake pad material that remains on your brake pads, keeping yourself and your family safe on the road.
The rate of wear depends on a wide range of variables; everything from choice of brake pads, driving style, to the condition of your brake rotors, or if your brake callipers are working as they’re supposed to.
There are a few signs to look out for that indicates your brake pads are reaching the end of their service life or wearing unevenly.
If your brake pads are on their way out, chances are you’ll start to feel them not working as well as they used to. Another obvious indication you might come across is a squealing sound when you hit the brakes.
This is usually a tell-tale sign that your brake pads are nearing the end with that squealing being the wear sensors coming in contact with the rotors. On the more extreme side of things, more of a metallic scraping noise might arise if your brake pads are worn with the rotor. Another symptom you might experience is vibration under braking.
If you’re experiencing any of these symptoms, it pays to have a look at the condition of your brake pad. In most cases you should be able to get a good enough look without even having to take off the wheel. Simply have a look inside your brake callipers and try to gauge the level that your brake pads are sitting at. With Bendix’s Brake Wear Indicator, this is as simple as checking the imprint on the edge of the pad marked ‘REPLACE’. This will give you a clear indication on how much life your brake pads have left. If you notice that one pad has worn down a considerable amount more than the other pad, then you have uneven brake pad wear.
What causes uneven brake pad wear, exactly?
A common root of the problem is DTV (Disc Thickness Variation). Variation on the thickness of your rotors chews away at the brake pad as they come in contact with flat spots in the disc, causing the pad to wear unevenly. Depending on the extent of the impact of DTV on your rotors, they could be machined to iron out any flat spots.
Rotors could only be machined so many times though so be mindful of that. It’s also important to hit your newly-machined rotors with brake cleaner to get rid of any machine dust. The key to avoiding the effects of DTV is taking measures to prevent it in the first place. If you’re installing a new set of rotors, preparing them properly beforehand is an important step to take. Make sure to give them a hit of brake cleaner before installing them to clear any dirt and anti-rust coating.
Issues with the operation of the brake callipers are also major contributors to uneven brake pad wear. Often, components within the calliper, such as the guide pins, could seize and cause the brake pad to drag along the rotor while the brakes aren’t applied, which in turn leads to uneven brake pad wear.
If it’s time to replace your brake pads and you’ve found there to be some uneven wear, check the calliper guide pins. If one or both of the guide pins are seized, it’s time to pull them out and regrease them with Bendix Ceramic High Performance Synthetic Lubricant. If they’re a bit worse for the wear, it’d be a good idea to replace them. If this doesn’t rectify the problem, the issue might require a calliper rebuild or replacement.
刹车片是消耗性汽车零部件。它们会随着时间的推移而耗损，最终必须更换。 你需要注意刹车片的厚度剩下多少 ，以保护你和你家人的行车安全。