I run 255 squared. I like it. If you're worried about oversteer vs understeer, that can always be tuned to a degree between the sway bars and the tire pressure. But with a car where the weight is 50/50, the tire footprint should also be in my opinion. On center feel is more about corner weight than tire width in my opinion. I bought my car with 205/55/16's, then went to 68's with a front 225/40/17, and then ran reverse staggered to get more front grip with the 245/40/17. I ran the 245 for just over a year. I was waiting for my new wheels so I was on my friends girlfriends 215/40/17 and I got all this steering feel back that I didn't realize I lost.

With my 255's, my corner weight is about 43lbs before air. I have the same amount of feel as I did with the 215's, although now I have the opposite problem in that my steering is too light because the wheels are so light. Now I may need under drive pulleys for the PS...