If the tires are properly balanced plug tires should not cause a vibration.
Not all Altima's vibrate. If the car is vibrating, it may mean that there is something wrong with the tires.
You will feel the car vibrate around 50-80 MPH
loud, and shety muffler
could be a broken engine mount.
Yes, bad spark pugs or plug wires can cause the engine cylinder to misfire which will cause the engine to vibrate.
It is idling. This is hard for an engine to do smoothly.
Could be time for a tune up.
Normal wear.
FRICTION
mechanic paint spark plug , I order to avoid unstable due to high vibrate.
You have one or more tires out of balance.
When one drives a car with tires that are not aligned correctly, it can cause premature wear on the tires and will cause the car to start drifting uncontrollably.