Unkown issue: Model jittering naturally

Hi everyone, i’m new to unity and need your help.
I am working on controlling a vehicle, i spawned my model using urdf.
Everything looks perfect, i have the correct hierarchy model, meshes is loaded. But when I hit play, my model is naturally shaking for no reason (see following gif).

181314-y4g7rx2-imgur.gif
181313-luezlvp-imgur.gif

Can this can be fixed by tweaking the rigid body parameters?
Or simply is my model’s problem?

do you have any code in ur script that updates your model’s position every frame? if so you might want to change that by either updating once every X amount of frames or when some sort of input is detected ( like pushing or something like that)