How Brake Shoes Work
When the brake pedal is pressed, a piston in the master cylinder forces brake fluid through brake lines to the wheel cylinders. The brake cylinders then push the brake shoes against the wheel rims, creating friction that slows or stops the vehicle.
Types of Brake Shoes
* Organic brake shoes are made from a mixture of fibers, such as rubber, cotton, and Kevlar. They are relatively soft, so they wear down quickly, but they are also quiet and inexpensive.
* Semi-metallic brake shoes are made from a mixture of organic fibers and metal, such as iron, steel, or copper. They are more durable than organic brake shoes, but they can also be more noisy and expensive.
* Ceramic brake shoes are made from a mixture of ceramic fibers and metal. They are the most durable type of brake shoe, but they are also the most expensive.
Brake Shoe Wear and Replacement
Brake shoes wear down over time, so they must be replaced periodically. The frequency of brake shoe replacement depends on a variety of factors, such as the type of vehicle, the driving conditions, and the driver's habits. However, most brake shoes need to be replaced every 30,000 to 50,000 miles.
Brake Shoe Replacement Symptoms
There are a few symptoms that can indicate that your brake shoes need to be replaced. These include:
* A grinding or squealing noise when you brake
* Increased stopping distance
* A feeling of vibration in the brake pedal
* The brake pedal feels soft or spongy
If you experience any of these symptoms, you should have your brake shoes inspected by a qualified mechanic.
