1. Cost: Disc brakes are generally more expensive to purchase and maintain compared to other types of brakes, such as drum brakes.
2. Complexity: Disc brakes are more complex in design and installation, which can make them more difficult to repair and maintain.
3. Heat dissipation: Disc brakes can generate a significant amount of heat during heavy braking, which can lead to brake fade and reduced braking performance.
4. Noise: Disc brakes can be noisier than other types of brakes, especially when they are worn or improperly installed.