You probably need new rotors
loud, and shety muffler
It is idling. This is hard for an engine to do smoothly.
Could be time for a tune up.
out of balance
You have warped brake rotors. Replacement or machine work is required to stop that condition.
Cars vibrate.
It could be that a motor mount has failed allowing the engine to vibrate, thus shaking the car.
A car's steering wheel will vibrate when driving if the car's alignment needs to be adjusted.
i nono cave man, we have no car
check yr stabilizer bush
Hey Marques==Either the rotors or the durms or both need to be turned. Goodluck Joe
Not all Altima's vibrate. If the car is vibrating, it may mean that there is something wrong with the tires.