Automotive braking performance refers to whether a vehicle can come to a proper stop during braking and maintain stable braking effectiveness. The main factors influencing automotive braking performance include the following aspects:

1. Design and Performance of the Braking System: The design and performance of the braking system directly determine the effectiveness of a vehicle's braking. The braking system consists of components such as the brake pedal, brake fluid, brake calipers, and brake discs or drums—among which the brake caliper is a critical component. Factors like the contact area between the brake caliper and the brake disc/drum, the choice of materials, and the efficiency of braking force transmission all significantly influence braking performance.

2. Brake Pad Materials and Wear: The friction characteristics of brake pad materials directly influence braking performance. Common brake pad materials include non-aluminum-based options (such as asbestos-free organic materials), semi-metallic materials, and ceramic materials. Each material type offers distinct braking characteristics, including brake feel and stopping power. Additionally, the wear of brake pad materials can also affect braking performance—excessive wear may lead to diminished braking effectiveness and significantly reduce the lifespan of the brake pads.

3. Brake Fluid Performance and Degradation: Brake fluid plays a crucial role in transmitting pressure within the braking system, directly influencing the system's responsiveness and braking effectiveness. Common types of brake fluid include mineral oil-based fluids and polyether glycol-based fluids. Brake fluid is prone to absorbing moisture and deteriorating over time; when the moisture content in the fluid becomes too high, it can lead to boiling and bubble formation, ultimately reducing the fluid's ability to effectively transmit pressure and diminishing the overall braking performance.

4. Wear and Deformation of Brake Discs/Drums: Wear and deformation of brake discs or drums can also affect braking performance. As brake discs or drums wear down, the contact area between the brake pads and the disc/drum decreases, reducing braking force and accelerating pad wear. Additionally, deformation of the brake discs or drums can lead to uneven braking dampening, thereby compromising overall braking effectiveness.

5. Vehicle Conditions and Faults Affecting Braking: Certain vehicle conditions and faults can also impact a car's braking performance. For instance, air leaks in the brake lines, cracks in the brake discs, or seized brake calipers can all lead to ineffective braking. Additionally, factors such as the vehicle's load, the condition of the suspension system, and tire wear can also subtly influence braking efficiency.

In summary, the key factors influencing a vehicle's braking performance include the design and performance of the braking system, the material and wear condition of brake pads, the performance and degradation of brake fluid, the wear and deformation of brake discs/drum brakes, as well as the overall vehicle condition and any potential malfunctions. Vehicle owners should regularly inspect and maintain these critical components to ensure optimal braking performance, thereby safeguarding driving safety.