- Car Care & Maintenance
Why do I have black brake dust on my front rims
Brake dust on wheels has got to be a number one concern among my customers. The appearance of heavy black dust on shiny aluminum rims can create a lot of frustration.
Usually the front wheels get it the worst because the front end handles about 70% of the stopping. This is why replacing struts at factory recommended intervals is so important. The dive in the front end can cause extra strain on the braking system.
Ultimately, the style of brake pad is primarily to blame. The 2 most common pad types that cause this problem are organic or semi-metallic.
Organic brake pads are pretty much just like they sound. It is a pressed pad of material that is very soft and disintergrates easily. It helps create a quiet stop with a shorter braking distance.
Semi-metallic brake pads are an organic with metallic material mixed in. This creates a longer lasting brake pad than an organic, but is also a primary cause of brake noise.
Consider this, braking is simply the process of turning forward energy into heat energy. The brake pads and rotors must dissipate that heat quickly and effectively. This heating and dissipating from the brake pad results in material that comes off and lands onto the wheels.
The most effective solution to reducing brake dust is to use a ceramic brake pad. This material is the least likely to cause dust or noise but may have a little bit longer brake distance.
- What are Brake Pads?(brainz.org)
- ITT Supplies Brake Pads for the New "5 series" (eon.businesswire.com)