So I started this thread and as usual it has come hard to find a definate answer. I have although changed my mind about spring choice. From a very informative car enthusiastic of all natures, he had nothing but negative things to say about the sportlines and suggested the pro-kit for the ride and the handling on the track/road course. So I think I am going to take my chances with the 215/45/17 +42 on the pro-kit.....
BrianMCD- Would you happen to have any more pictures of the slipstreams on the blue... (wow) I also am in love with those wheels (rockon)