My car is shaking or shimmying however is politically correct I believe the factors are I have a slow leak in one of my tires and I also need a alignment do you think those things would have anything to do with that. It's shaking only when I go on the highway.

 

This could be part of your problem....

http://forums.maxima.org/showthread....97#post1608997

 

High speed vibration is most commonly caused by an out of balance tire. If the steering wheel is shimmying, you may also have a "separated" tire, a tire where the steel belts in the tire have come apart due to impact or wear. Take a close look at the edges of the tread pattern on your front tires, and look for a bubble or distorted area...

 

I found that out after my tire was seperated and I had to change it cuz it was flat... stupid f'er poked me