What are the causes of brake failure at high speeds?
2 Answers
For vehicles, all components have a lifespan. After a certain period of use, various issues can arise. Data shows that approximately 40% of traffic accidents are related to brake failure. Here are some additional tips: Use engine braking: When the brakes are not functioning well, utilize lower gears to drag the engine at high RPMs for braking. The same applies to automatic transmissions—continuously downshift to brake. If the vehicle is moving at high speed, the transmission protection mechanism may prevent shifting into lower gears. Use the handbrake with caution: In the event of brake failure, using the handbrake can be life-saving or life-threatening, so extreme caution is necessary. The handbrake is directly linked to the parking system, not the braking system, and should only be used as a last resort. At higher speeds, pulling the handbrake can cause the rear wheels to lock up, leading to loss of control and rollover. However, vehicles equipped with electronic handbrakes fare better (though caution is still advised), as they often come with dynamic emergency braking functionality. At low speeds, holding down the electronic handbrake engages the ESP to brake the wheels.
I once experienced brake failure on the highway, and it still gives me chills when I think about it. There are several main reasons: brake fluid leakage or insufficient levels can lead to inadequate system pressure; brake pads worn too thin are prone to thermal fade failure under continuous high-speed braking, with discs turning red from excessive heat; air entering the brake lines makes the pedal feel spongy; if the booster pump fails, braking force diminishes; neglecting maintenance is the root cause—I once overlooked checking the brake fluid. Risks are greater at high speeds due to rapid heat buildup. If it happens, stay calm, downshift to slow down, or use the handbrake gradually. For prevention, I now check the brake system every time I change the oil, inspecting fluid levels and pad thickness for any abnormalities—don’t skip this step.
