It could be your motor mounts (usually always slightly vibrating the car, especially when accelerating) or most likely not aligned/damaged driveshaft on rear wheel drive vehicles.
they are overtorqued.
Your car could be vibrating as a result of some disconnection in your engine. Take it to a mechanic to have it checked.
Most likely you need to change your motor mounts...
If it is vibrating on the steering wheel, you may need an alignment. If it is vibrating at the tire area you may have a bent wheel or need to have your tires check, take it to any tire shop and they can test. I had the same problem and it was a bent wheel.
Could be bad u-joints in the driveshaft.
The frequency of sound produced by an object is determined by its vibrations. A guitar string vibrating at a higher frequency produces a higher pitch sound, while a car horn typically produces a lower pitch sound due to its larger vibrating source. The difference in size and material of the vibrating sources between a guitar string and a car horn results in the production of sound at different frequencies.
When the car is running it appears to run fine. When stopping or car coming to a stop it feels like choking or its about to stall and the whole car is usually shaking or vibrating
Not all Altima's vibrate. If the car is vibrating, it may mean that there is something wrong with the tires.
Vibrating produces sound.
It's a vibrating dildo.
I would suspect wheel balance.