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Brake shoes are an essential component of automotive braking systems. They are typically made of steel and are lined with friction material, such as ceramic or semi-metallic compounds. When the brake pedal is pressed, hydraulic pressure forces the brake shoe against a brake drum, generating heat and friction to slow or stop the vehicle. Over time, the friction material on the brake shoe wears down and must be replaced to maintain proper braking performance. Brake shoes are commonly used in rear wheel drive vehicles and some all-wheel drive vehicles, while disc brakes are more common in front-wheel drive vehicles.