[strat61caster]

225 on a 7" wheel will feel mushy compared to a 215

Also I can definitely move my steering wheel about an inch before it really starts loading up and moving the wheels at low speed, you've probably gotten comfortable with the car so it doesn't feel as responsive anymore. Hop in another car next chance you get, I bet it improves your opinion of the 86.

You can also safely run a sportier summer tire year round with a stiffer sidewall to improve steering response, I say go back to a 215, there's a reason it was chosen by the factory.

Edit: getting used to the car also explains the body roll, your more comfortable so you're subconsciously driving it faster, you may also think you're running out of grip in tires that look fine, same phenomenon, you've become comfortable with the limit so it seems like the limit is reduced compared to before. I've gone through the same thing and junked the oe tires early when they still had some life left in hindsight, and I have talked to a few others with similar experiences.

First time you hop in a car like this it seems like it can do anything, after enough seat time you find out where the limits are.