i have 18x9" rims now, both front and rear. 255 on the front, 285 on the back. i use toyo t1-Rs and 255s on my 18x9" rims already looks small.
i want 245s on 17x8" rims for the front. 245/45/17 on 8" rims is stock, and that is the look i want for the front tires. i guess i can live with 255s on 17x9" if i have to though.
i want to go to 17x10.5" on the back to improve traction because the 408 is going to be an absolute torque monster. 135/35/17s are going to grip much better than the 285/35/18s i have now.