Yeah, thats almost a perfect fit on the stock wheels. I just picked up a new set of tires myself. I had considered the rivals but there are two competitors you should look at also. The new Dunlop Z2 and the Bridgestone RE11-A. The Rival is very close in performance but has a much thinner tread depth, not that any of these tires are going to last long, but it will be the shortest lifed of the bunch.
I talked with Rudy from tirerack a couple times and ended up going with the RE-11A as it makes a decent DD tire out of the extreme performance tires and has better wet performance than the others. I've only put about 200miles on them so far but they have been great. The only other tire you might want to think about is the Michelin Pilot Super Sport.
Some info: Links at the bottom of the article to the other tires mentioned as well.
http://www.onehotlap.com/2013/02/bridgestone-re11a-new-suspect-has.html