From Yahoo! Answers:
I just bought a car, and I was wondering...?
It didn't come with any tires, and I just found out how expensive new tires are. I need to know if I need to put all four on, or will three be fine, and long as both the front wheels have them.
It's front-wheel drive, by the way.
-Andy the Walker
The tires are not nearly as important as the paint job. Specifically the color of the paint, due to insurance concerns. Make sure that you do not get a red or sky-blue painted car.
Enjoy your new vehicle!