what rims are you running? are you lowered and how much? what offset rim? 225 would add approx 10mm front and back a 215 5mm. what you need is more aspect ratio 205/50/17 215/45/17 you have that much room? I'm going to try and put 215/50/17s on either 42mm offset or 38 mm offset with 1.5inch lowering should fit. 215/45/17 should give you about an extra half inch of sidewall top and bottom so an extra inch overall diameter.
check these threads http://g20.net/forum/showthread.php?t=16493&highlight=wheel+fitment
i am running the RS LImited rims. I have the stock suspension but the space between the wheel well looks very big. The wheels look very small on the car. So 215/45/17 might me better. Will the car look like an suv with those tires. Will the space between wheel well fill up.