Help! First wheels EVER!

[why?]

The only thing I would add to the advice above is think seriously about what type of driving you want to be doing and what you consider is fun. You shouldn't be able to hit the limits of modern tires today on the street, and whether or not that matters to you and what you consider to be fun is something to be taken into consideration.

I drive on 185/65/ 14 Yokohama AS430 tires. They stick well enough and break away gently, and the lower limit to me is more entertaining. With everything removed from the rear of my car and ultra lightweight wheels, the rear end steps out slightly on sharper exit ramps, easily controllable by throttle input. I can't wait to see how they react to a real suspension.

But that is me, I don't have an autocross event near me and I don't give two cents about what others think, drag racing at lights, or much of anything else.

If you don't want to deal with oversteer in a front wheel drive car, get bigger tires than I did.

And as has been debated above, decide now what type of suspension you want to run, how low you want to be, because that will change what is best for your wheel and tire setup.

Oh, as for wheel widths, here's a good calculator. and a great place to check wheel weights.