@CosmosMpower The OE 235 width is narrow for 9" wide wheels. They can be mounted, heck the M3P now comes with an even more stretched 235/35R20 on 20x9" setup (more stretched because shorter sidewall). It's just not ideal for ride or handling in my limited experience. Once the OE tires are used up what tire size do you have in mind?
At one point I was considering 18x9" wheels to run 255/45R18 tires. Then I saw tire options are pretty limited in that size, at least for 300-ish TW "max performance" tires. Neither of my top two tire choices is made in that size. 245/45R18 is a widely available size and should fit just fine on 18x9" wheels too, but I figured I might as well get 18x8.5" wheels for that size, which is what I did.
All that said...I wholeheartedly approve of OZ Ultraleggeras.
Just plan on running 245s or preferable 255s (if available) on 9" wide wheels, unless you're after a stretched tire look.