I am tired of the tire squeal on corners. The current 215/55/16's just don't have the grip. So I am switching to some 17x7.5 Thor's. Anti-sway bars will probably be next on the list. I love my S80 but I miss the handling of my old Maxima.
I drove a 2005 Maxima and I picked the S80 over it in part because the torquer steer and under-steer in the Maxima was worse. I thought the Maxima's 5-speed auto was better, but the S80 feels more confident to me.
"A Maxima handles better than an S80? I highly doubt it. What kind of tires are you running on the S80? That could be your problem right there."
I had a '98 SE for 135k+ miles with 225/50/16's, and I could take a corner at 40 without any squeeling. I know the S80 is heavier, but I think it should just have more grip on the road. Right now it has the stock 215/55/16's.
On a side note the gas milage on my S80 2.5t blows the Maxima away. I hit 525 miles/tank versus the 350 I would get on my Max.