Tire is slightly stretched. Still plenty of tire to protect the wheel.
However with the pilot sport all seasons, the "stretch" firmed up the sidewall enough to the point where what I thought was soft sway bars (I also have the hard race rear swaybar) was actually soft sidewalls. Turn-in is much more direct.
I was super nervous about the wheel size vs tire size, as well as the offset. I did the math so many times! The only real variable was the tire size on an 8.5" wide wheel. But, I'm super happy with the result.
As I think I stated before, I didn't want to put money into wheels and feel like I still needed spacers. With this setup, I'm a happy camper.