Road cruising jitter: Suspension problems, chassis deformation, and displacement are all important reasons for steering wheel jitter. Once the steering wheel is severely jittered, maintenance technicians will generally check whether the vehicle chassis has obvious deformation, and then check the four-wheel alignment. If necessary, The chassis is adjusted to toe angle and rear inclination angle. Jitter when crossing potholes: Suspension connection problems, if your car is not obvious when driving on a flat road, but it will jitter severely when passing through the potholes, it is mostly due to loose tie rods and ball joints. Problems such as improper connection of sleeves falling off.