Here's how it looks compared to the stock setup:
https://www.willtheyfit.com/index.php?width=225&aspect=50&diameter=18&wheelwidth=7.5&offset=55&width2=225&aspect2=50&wheel_size=18&wheel_width=8.5&offset2=55
It is not safe to install a 225 tire on a 8.5 rim. The minimum tire width should be 235