I've done a 4.8/13.3 in my 15 automatic, on the street, with my wife in the car, 235 all season pirellis, on 87 octane.
Best i did with my '13 manual was a 4.9/13.7, on the street, no wife, 245 all season pirellis, on 87 octane. (apparently I wasn't as good as shifting as I thought)
Really...