Im after nice straight/square sidewalls and recomendations as to what would be the correct size tyres for my wheels. I have always stuck with oem size wheels and tyres, but these wheels have me baffled. Wheels are BBS RS2's. Size 18x8.5 fronts and 18x10 rears. Tyre im looking at is michellin cup2. I was looking at the oem csl tyre sizes 225/40/19 front and 255/35/19 rear, but my wheels are a half inch wider so unsure if that would stretch and look too narrow. i already think the rear oem csl sidewall is too narrow on the oem csl wheel. Any recommendations for tyre sizes for my wheel size? if you have same size wheels as mine, what do you use? also any pics would be great.