[MyOtherCar_GT-R]

Hey Guys,

I am going to buy a new set of wheels and tires for autocrossing. Someone correct me if I am wrong, but I believe you are allowed to get wheels that's width is within 1" of your factory wheels, without changing class. With that, you could go 9" up front and 9.5" in the back. I am leaning towards going with 17's vs 18's. Unless anyone has a better argument for 18's.

For the tires, I am getting a bit confused with the measurable rim width vs the rim width range. When buying a tire do you want to make sure the rim width is equal to the measurable rim width for the tire or just with in the range? What are the pros/cons for being above/below the measurable rim width?

So what does everyone have or recommend for a wheel and tire size combination?