The Reason Why Light Braking Causes Shaking While Hard Braking Doesn't?
2 Answers
Light braking causes shaking while hard braking doesn't, primarily due to significant deviations in wheel alignment data; excessively high or low tire pressure; or uneven brake disc surfaces with excessive radial runout. Below is relevant information about automotive tires: 1. Introduction: Tires are circular elastic rubber products mounted on metal rims, designed for rolling contact with the ground on various vehicles or machinery. They support the vehicle body, cushion external impacts, ensure contact with the road surface, and maintain driving performance. Tires operate under complex and demanding conditions, enduring various deformations, loads, forces, and temperature extremes during use. Therefore, they must possess high load-bearing capacity, traction performance, and cushioning properties. 2. Basic Functions: Tires are one of the most critical components of a vehicle. Their main functions include supporting the vehicle's entire weight and bearing its load; transmitting traction and braking torque to ensure wheel-road adhesion; absorbing and mitigating vibrations and impacts during driving to prevent excessive vibration and premature damage to vehicle components; adapting to high-speed performance while reducing driving noise; and ensuring safety, handling stability, comfort, and fuel efficiency.
I've encountered this issue quite a few times, mainly caused by brake disc warping or uneven wear. When you lightly press the brakes, the braking force is small, and uneven pressure distribution causes vibration when the pads contact the disc surface, resulting in shaking. With harder braking, increased pressure makes the pads and disc fit tighter, eliminating vibration. Common causes include frequent hard braking at high speeds, aging components, or improper installation causing distortion. I recommend promptly checking the brake disc flatness. Minor surface irregularities can be fixed with lathe resurfacing once, but severely warped discs require replacement. Don't wait until the shaking worsens and affects driving safety. As a preventive measure: avoid frequent hard braking, and have technicians regularly check disc thickness and friction coefficient during maintenance to ensure proper system operation.
