if the seat is vibrating, it's the rear tires, if the steering wheel is vibrating it's the front tires.
Did you have rims put on?

 

Yup just put on mew wheels with new tires almost two months ago,...thought it was the tires before, so i exchanged those other new tires for different new ones thinking it was out of round...not the case. Its gotta be something else. These new ones have been balanced 3 times already! What could this be? Ahhh so annoying...i just want my car to be smooth.

 

Did you go to the same place to get them balanced every time? Maybe they have a problem with their machine. Was it a road-force balancing machine? http://www.gsp9700.com/

 

Took it to a different place that had road force, still gotta take it back for a second time around...its gotten a little better though, but im sure it can be even more smoothed out.