It's a fairly simple hydraulic Auto Brake system

A car's braking system is one of the most important components in your driving experience, as it's the only thing keeping you from smashing into that bus full of nuns on your spirited run to the grocery store. It's a fairly simple hydraulic Auto Brake system that allows the force applied at the pedal to be translated to clamping force at the wheel. Here's how it works:

All cars truck and SUV have brake rotors, usually four of them and they are quite expensive. When the time comes to replace brake rotors here is how to know if you really do need to replace brake rotors or if you can skim them at a much lower cost and get more miles out of them. First rotors are a disposable items and will need replacing anywhere from 15,000 to 70,000 miles into their use depending on your driving style and the type of brake pads used.

Some brake pads are much more aggressive than others. A sign of a fairly aggressive pad is one which makes a lot of dust. Tests have shown that over 90% of brake dust is actually Fe or iron material coming from your rotors so a less aggressive pad will wear rotors less and also produce less dust. Some rotor wear must happen for the rotor to self clean and function properly, no wear at all usually will result on rotor black spotting where with a self cleaning pad, the rotor surfaces get mildly scrubbed us as you drive the car to keep them smooth and keep them true. Before you replace brake rotors look at these photos which will guide you on whether you need to replace brake rotors or you can salvage them.

Before you replace brake rotors look at these photos which will guide you on whether you need to replace brake rotors or you can salvage them.

This is a typical cross drilled rotor and what it will look like after about 40-50,000 miles commonly fitted to Jaguar, Mercedes and Audi cars. The drill holes do not cover the entire rotor surface and thus different surface areas exist across the rotor and some areas will wear faster than others. leaving behind nasty ribs. If you see ribs like this on your Brake Pad China take them to an on car brake lathe (not a bench lathe) provider which you can find on these links: Pro Cut Lathe.