If automatic - check Transmission Fluid or whole transmission system. If manual - check gearbox, clutch and ensure correct gears are being used while driving. This will vary between vehicle. Ac unit is very heavy and drains power and fuel - if you are having a problem with juddering maybe there is a power issue.
Maybe there is something wrong with your car, you should get it checked out.
Cars vibrate.
If a car is speeding up, it's initial speed is LOWER than it's final speed.
The worst part about car crashing is potential death. If traveling at a high rate of speed or not following safety procedure, there is a high chance of death or permanent disability.
As you increase your speed the whole car will begin to vibrate, not shake but vibrate. The images in the mirrors will be just a blur.
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
the engine runs at a faster rate than when the idle speed is lower.
Approximately 160mph, but depending on the options the car was ordered with there may be a speed limiter that will cut power at a lower speed.
your car is lower than the speed bump and it scrapes the bottom of tour car usually the frames lower so it doesn't cause any damage
Y=The worst car in the world Y=your car :)
Not all Altima's vibrate. If the car is vibrating, it may mean that there is something wrong with the tires.