How to Deal with Car Shaking at 60-70 km/h?

[LeAurora]

Replace the damaged inner CV joint or axle shaft. Below are the relevant details: 1. Position change: Most modern cars are front-engine and front-wheel drive, and their inner CV joints are often telescopic to accommodate changes in the relative position between the transmission drive terminal and the drive wheels during vehicle movement. Upon disassembly and inspection, it can be found that the inner wall of the inner CV joint, which frequently contacts the outer shell of the needle roller bearing—i.e., the torque transmission area (stress point)—has developed indentations. 2. During rapid acceleration: When the vehicle accelerates rapidly, the engine and transmission assembly undergoes slight lateral tilting, altering the position of the aforementioned stress point. Due to the angle between the axle shaft's axial direction and the inner CV joint's axial direction, this stress point continuously shifts back and forth along the axial direction during the CV joint's rotation. The force generated by this change pushes the car body alternately to the left and right, creating the aforementioned "shaking" sensation. Replace the damaged inner CV joint or axle shaft.