I just installed my 513s in my 2013 auto Rubi and I love them !! I have 35s right now and plan on going to 37s next year. They are fantastic my Tranny is not always downshifting and at 65mph I'm at about 2800-3000 rpm which will go down when I get my 37s. I am personally very very happy with this set up and I'm glad I went with 513 over the 488