Hey guys, just installed my new wheels and tires. Went from style 355M with:
18x8 ET 30: 225/45/18
18x9 ET 41: 225/45/18
To:
19x8.5 ET 15: 225/40/19
19x8.5 ET 15: 255/35/19
This is pretty equal to going with stock wheels and getting 20mm spacers, for those of you who are curious how it would work.
Some pics