Yes just had them installed yesterday definitely a improvement over the worthless pirelli's that decided to come apart. So far I have noticed they stick harder in the corners didn't see much of a difference launching but it's been cold here So give me a few days and I will give you a update.
The MPSS tires are really really good, IMHO. Hard to find an all around better tire. They aren't R compound tires but give you a lot of performance that you can still drive in the rain and freezing temps if necessary. And all while having a pretty decent treadwear rating. I'm impressed with them.
The MPSS is the best all around tire that you'll find, imho. I've ran them on a lot of my cars and switched out the craptastic P Zeros (summers from PP) for them. They'll take about any kind of abuse you'll throw at them and last a good bit too. They're on the expensive side, but we'll worth the cash.
When my Pirellis run their course I plan on replacing them with PSSs. I've had the Hankook Ventus V12 Evos on my last two cars but I just don't like the feel. Time to spend a bit more and get a better tire.
Didn't wait. Sold the stock wheels and tires immediately and ordered new with MPSS. So far very happy. Good road holding, smooth ride, and quieter than I thought they would be.