Shake

Friends made it clear today. especially when traveling at a speed of 80-90 km, there is an obvious shaking in my vehicle. As if it was from behind the vehicle, not from the engine. There is already a lock from the back left, I don't know if it could be related to this. I don't think it's from the engine. There is no buzzing like ball. Something seems to be empty. Do I have any friends with intellectual experience? thanks in advance.

I was doing it after 130, I fixed it with the balance, could you have the balance setting?

balancing is easy, hopefully balancing. it seemed more like me from the back. Does the balance affect the back?

Do they call torsion what do they call it?

I hope it is doing after 130 in 307, Rot corrects the balance