What are the reasons for the abnormal noise in the rear brake of the UY125?
3 Answers
The reasons for the abnormal noise in the rear brake of the UY125 are as follows: 1. Break-in period for new vehicles: New vehicles or recently replaced brake discs and pads will have a break-in period, during which some abnormal noises are unavoidable. These noises typically disappear after driving a few hundred kilometers. 2. Normal activation of the ABS system: During emergency braking, the brake pedal may produce a continuous "thudding" sound, sometimes accompanied by a pulsating sensation. This indicates that the ABS system is activated, which is normal. In such cases, firmly press the brake pedal all the way down, but this applies only to vehicles equipped with an ABS system. 3. Metal hard spots on the brake pads: Brake pads may contain small metal particles, which can produce sharp, screeching noises when lightly braking. This issue can be resolved by forcefully applying the brakes several times, removing and regrinding the brake pads, or replacing them with higher-quality ones. 4. Severe wear on the brake disc: Wear on the brake disc can create deep grooves around its circumference. Friction between the brake pads and the edges of these grooves can cause abnormal noises. If the grooves are not too deep, grinding the edges of the brake pads to avoid contact with the groove edges may solve the problem. If the grooves are very deep, replacing the brake disc is necessary. Generally, it is recommended to replace the brake disc every two brake pad replacements.
Riding the UY125, the sudden squealing noise from the rear brake can be really annoying. I've encountered this issue a few times. The sound is like a harsh metallic screech, and upon inspection, I found dust or small stones stuck in the brake pads—any dirt can cause this noise. Sometimes, it's due to uneven wear on the brake pads, especially after riding through muddy areas. I've tried simple fixes like rinsing the brake area with water or gently scraping off debris, which usually solves the problem. However, if the issue persists, it might be a warped brake disc—possibly caused by sudden braking or impact. Another reason could be the brake pads being too hard or improperly installed, or even new pads not being properly bedded in, leading to noise. Regular cleaning is recommended, and checking the brake components after a few thousand kilometers can prevent mid-ride issues. Don’t skip routine maintenance; keeping things clean avoids many headaches. After all, rear brake noise not only ruins the riding experience but can also pose risks—staying proactive with upkeep is key.
As a new owner of the UY125, I noticed an unusual noise from the rear brake shortly after riding, which made me a bit nervous. After checking common causes: first, the brake disc or pads might be contaminated with oil or dirt, especially after riding in the rain; second, the brake pads could be old and worn, with burrs on the edges causing friction noise; third, installation issues, perhaps parts weren't tightened properly during maintenance; and environmental factors, like damp weather causing slippery conditions or rust on the iron disc leading to noise. I picked up some tips from a friend: first, stop and wipe the brake disc with a cloth to see if the noise goes away; if not, check the insurance or replace the brake pads—usually, getting a good brand at a shop will do. Remember not to ignore the noise; it's not just annoying, it could also affect braking performance. After riding for a while, I've developed a habit of checking the brake area before every trip to reduce surprises. Learning more about maintenance can make riding more reassuring.
