No comment on the Hankooks, never owned a set.
But if you are stock rim width, 7", then 225/40 was the best setup I've had yet on that size wheel. If you're on a larger width, like I am now, 8", then I'd go with the 235/40.
Let us know what you buy and you're feedback, I'm always looking to try another tire out.
Currently on RT615K's and though they are suppose to be the same compound but with a stiffer side wall, I don't like them as much as the original RT615.
Gmac