I am wanting to switch over to a larger diameter wheel.

I am thinking Boxster 16", or I have a set of Cayman S 18" wheels, I like the wheels I just think they look to big on the car. It may be the tires that are mounted on them. But I am not sure what tires I should run on these.

Here they are on my car. I have to widen the front fender to turn the fronts.

I think they look good. You will probably need to roll the fenders, but I'm really starting to like that look as well.

Nice to have options.