What are the causes of poor braking performance?

[Piper]

Poor braking performance can be attributed to the following reasons: 1. Lack of necessary maintenance in the braking system, leading to excessive impurities in the master cylinder, poor sealing, failure of the vacuum booster pump, or contaminated brake fluid; 2. Improper operation causing mechanical failure, such as prolonged braking during downhill driving resulting in brake function failure; 3. Severe overloading, which increases the vehicle's motion inertia under gravitational acceleration, leading to poor braking performance. Proper functioning of the braking system is fundamental to safe driving. Regular maintenance is essential in daily use. Brake discs and brake pads are wear-prone components and should be replaced promptly when severely worn. Brake discs have a longer service life but need replacement when they are heavily worn.

[LeilaniRose]

I've experienced situations where the brakes didn't work well, and I've summarized several reasons. First, insufficient or contaminated brake fluid, where water mixing in lowers the boiling point, resulting in spongy brakes. Second, severely worn brake pads—once they're worn flat, braking becomes ineffective, especially worse in older cars driven frequently. Third, leaks in the braking system, such as small cracks in the pipes or loose connections, causing fluid to leak out. Fourth, warped brake discs or drums, where uneven surfaces lead to shaky and weak braking. Additionally, ABS system malfunctions, where dirty or faulty sensors become more noticeable in rainy weather. During my own maintenance, I overlooked lubrication points, causing parts to seize. I recommend car owners check fluid levels every three months and test braking distances before highway driving. Safety is no small matter—regularly replacing fluids and pads can prevent most issues.

[Santiago]

Bro, brakes not feeling right? Mostly common minor issues. Like brake pads worn too thin, can't stop properly at high speeds. Brake system hoses aging and brittle, leaks hard to find. ABS module acting up, sensors clogged or broken, affecting force control. Tire slippage is also an indirect cause, treads worn out with poor grip. Last time I drove downhill, brake discs overheated and warped, made creaking sounds when pressed. Vehicle modification mistakes are also common, wiring tampering causing short circuits. Best to have professionals check regularly, simple cleaning and lubrication can extend lifespan. Don't wait until an accident to panic, safe driving is top priority.

[EmersonLee]

There are many reasons for poor braking, and I believe the focus is on the braking system. Insufficient or contaminated brake fluid greatly reduces effectiveness. Worn-out brake pads need replacement. Deformed brake drums cause uneven force. A faulty oil pump fails to build pressure. High temperatures lead to brake fade, especially downhill. Worn tires affect overall performance. To detect dangers promptly, I always lightly test the brakes before driving. Ensure the system is free from oil leaks and hollow drums. Preventive maintenance is crucial; monthly checks can save major trouble.