Hi LoinCLoth. The wheels look considerably larger than stock. Much like you, the thin width and whimpy stance bugged me. If you want to stick with OEM wheels, then increasing your width is limited. I think 235 is the max you can go. There is a great thread that lists all possible wheel/tyre sizes for our cars.
As far as rubbing, I don't think you need to worry about that unless you go to a 275 tire. My wheels are pretty much flush with the fenders now. I am however debating 5mm spacers. We'll see!
Good luck with your decision!
Nice ride SndChsr!!
I'm from Belgium and I'm getting one in Machine Grey (a diesel) and was also thinking about 20 inch wheels instead of the stock 19 inch. The wheels I'm thinking of installing (AVA HS-280) have the following dimensions: 20x8.5J ET37, combined with an all-season Vredestein Quatrac 245/45R20. If I'm right, the offset of 37 (instead of your 42) will make up for a 5mm spacer you're considering.
So I think it's not going to be too wide on the car if I go with those?
Thanks!