RS2s have soft-ish sidewalls--don't be afraid to use a fair bit of air. They can overheat, so spraying on warm days is certainly in line. They work best when driven HARD...a toss and catch tire...lots of slip angle.
In 2006 I co-drove a full set-up SVT STS car on 17's...I never really got them to work the way I liked. They are a numb tire in steering feel vs. RT215s...and vs. the newer crop of ST tires. You have to "drive in front of the car" a bit, because they don't turn in "right now" (compared to the Falkens etc.). I used them as daily tires on my ZTS--they were fantastic in that role.