What Causes the Rear Brake of a Motorcycle to Fail?
4 Answers
After replacing the disc brake pads and adding brake fluid, if the air inside is not completely bled out, the brakes will not function properly. Below are the specific details: Braking Steps: First, release the throttle and straighten the bike. Use the front brake as the primary and the rear brake as the secondary. Apply the rear brake first, then the front brake, in combination with engine braking. Avoid locking the brakes completely; allow the wheels to rotate slightly to prevent skidding and ensure rolling. Adjust according to road and vehicle conditions. Basic Techniques: At high speeds, the front brake force must be greater than the rear brake force, but not enough to lock the front wheel. When braking uphill, the front brake force can be slightly increased, and the rear brake force can also be adjusted accordingly. During emergency braking, apply a force slightly less than what would lock the wheels. On slippery roads, apply the rear brake before the front brake.
The rear brake of the motorcycle isn't working properly. After riding for over ten years, the common issues are usually worn-out brake pads or oil contamination, leading to insufficient friction. For hydraulic brakes, check if the brake fluid level is adequate and clean, as old fluid can affect braking performance. Also, inspect the brake disc—scratches or deformations can weaken braking efficiency. If you encounter a situation where the brake fails during an emergency stop, don't force it; pull over immediately to troubleshoot. Personally, I inspect the components every 3,000 to 5,000 kilometers to avoid mid-ride breakdowns. Brake failure is a serious hazard, especially in rainy conditions where skidding is more likely. Safety is far more important than saving money.
Weak rear brake performance can stem from various mechanical issues. Stuck pistons cause uneven pressure—remove the caliper to check for rust or debris. Leaking brake lines lead to insufficient hydraulic pressure, resulting in a spongy lever feel. Here's a lesser-known fact: brake fluid absorbing moisture creates vapor lock, impairing responsiveness. I recommend first bleeding the system with fresh fluid. If that fails, inspect line seals. Regular maintenance prevents major repairs, and pre-ride brake pumps help detect issues early.
I encountered this situation when I first started learning to ride a motorcycle. It might have been because I applied too much force, causing excessive load on the braking system, which led to the wheel skidding directly. Beginners often overlook environmental factors, such as wet road surfaces causing brake failure or worn-out tires with poor grip. Now, I've learned the technique of progressive braking—gently applying the brakes instead of stomping on them. It's advisable to check the tread depth of the tires and, if necessary, switch to anti-skid tires. If you can't stop while riding, don't panic; release the brake and try again, or use the front brake for assistance.
