What is the reason for the body shake when the speed is above 80?

There are many reasons that lead to the body shaking when the speed is above 80, such as the problem of shock absorption system, the problem of throttle valve and the failure to do dynamic balance after changing tires.

Problems with the suspension system: The aging of the suspension system will lead to the body shaking. We can go to the 4s shop to repair the vehicle, so that the problem of body shake can be solved.

Throttle problem: If you don't clean the throttle for a long time, it will not only block up, but also have a lot of carbon deposits, so there will be jitter when driving. We can clean the throttle to solve the problem.

There is no dynamic balance after tire changing: when we change tires, we must do a dynamic balance. If you don't do it, you can feel your body shaking as long as you speed up, and a dynamic balance can solve the problem.

In addition, the car body jitter with a speed above 80 may be caused by engine carbon deposit, injector carbon deposit or dirty throttle, ignition system problems, aging engine parts and so on. The owner needs to drive his car to a professional repair shop, so that professionals can investigate and repair the cause of the fault and repair it in time to ensure the normal running of the vehicle.