Rim advice for a numpty

I have an 05 VZ wagon with 17 inch X 8 inch rims and 235/45 tires. They work well but look carp.
I want 18 inch rims as they look better in my opinion. I like the VY and VZ SS styles.

My doubts and questions are about fitment and rub on the body.
My car is standard ride height and assume the aforementioned rims would be a straight fit with no issues what so ever.

Am I thinking correctly?

Any comments or opinions welcome.

TIA