[Msquared]

I agree with arpad that those wheels will fit fine. He's right that the tire fitment can work on those wheels, but the rim widths are a bit on the narrow side for them (they will work though). I would consider 255/35/20 for the front and 305/30/20 for the rear, and there are plenty of tire choices in those sizes. These will be slightly shorter tires as well as narrower, however, and I understand that some people like the bigger diameter to fill the wheel wells a bit more. The sizes I'm suggesting are the original tire size for an SS 1LE in back, and a bit narrower and taller than the SS 1LE fronts (but the front tire would still be 5mm shorter in front than the rear, which will make the ABS and Stabilitrak happy. You can do either size combo safely, so it's a matter of preference and handling.