My first Mazda3 and my first actually new car!
 

I bought a Mazda3 I-sport with ABS/SAB, a/c and keyless entry. Black exterior and interior. Got it for 16,200 out the door which included tax and title. I will be posting pics soon! Sooo happy, and am wondering, should I get better wheels/tires when the tires go and its time anyways? im wonderinf if larger wheels will help the ride be more smooth?

First off congrats on your purchase and welcome. Second off buy a third key. Third off if you want the ride to be softer a larger wheel (i.e. bigger diameter) will not help you out as it will make the ride rougher. If you want a smoother ride get a smaller diameter wheel and tires with bigger sidewalls.