Has anyone with the 2012 lifted and put on 35's yet???? just wondering what your thoughts were with these mods and the Pentastar motor, please advise if auto or manual .

thanks in advance

 

I've got the auto with 4.10 on my 2012 Rubicon, lifted with 33's and sorely wish I had 35's. I have an almost new set of 33's and can't justify ditching them for 35's right now, money-wise. I'm turning 2,500 rpm's at 70 mph and just consuming fuel... The new Pentastar's have enough power to throttle back with lower rpm's and still have reserve for hills and such. So, yes with my setup I could use larger diameter tires. Plus I'm learning that if you travel around at 2,500 rpm's you're going to get about 15 mpg (with these rolling resistant tires I have) whereas drop back to 2,100 rpm's and I get 17 mpg. FYI, these tires I have are an automatic reduction in mpg of 2.0-2.5 just upon bolt on.

 

Are you using the dash computer to get your mpg or are doing the math at the pump? Just curious.

 

Dash computer. I've use my AEV Procal to reset the factory settings so he knows the new tire size. I use my Garmin GPS on my windshield and the MPH are exact with the factory dash speedometer.