These are the answers I was hoping for. I had decided on the 3.55 for the reasons most described however, did not want to say"I wish I had". I would seem that the 3.55 is more then enough for street use with street tires. With the lack of 2011's left, it is difficult to drive both back to back. Also, I have seldom seen the 3.55 in dealerships. Given that there is maybe 150 rpm difference between the two, I would doubt that most folks could tell the difference.