this has been my experience as well. I live about 2 miles from work, so I’m not on the highway often, but when I get on the freeway, I can do 70-75 and see a computer estimated 22-23mpgMy XR has a little over 7000 miles and I’m getting 16-18mpg with 35x12.5/17 tires. I’m actually surprised how well it does (20+ mpg highway)
As an update, I’m just a hair over 7k miles now, and seeing low 20’s consistently on the Highway. Usually 21-23mpg while cruising. Usually between 17-19 in City with my current drive.I drove a 3.6rubi on 33’s when shopping for mine. The XR is quicker, and I’m getting 17mpg in mostly city driving.
How do you feel the 4.56’s push those 37’s. Lots of people say 4.88 is a must, but interested in your opinion.4.56 gears on the XR with 37" tires - 17.2 MPG - that is about 60% commute on interstate moving along at 75ish and the rest in town. If it's pure highway, 18 to 19+ is average depending on the headwind. These things are not aerodynamic
The eTorque really makes a difference from my previous Rubicons with the same 3.6L. I've also disabled auto start/stop via Tazer.
It's not a must, it's fine. I'm extremely happy with the performance and I will admit I was concerned based on some of the comments here. 37" Ridge Grapplers are great and I'll never go back to 35" tires on a Jeep. I love the stance, added sidewall while still having a nice looking rim (hate 17/18"), and it's quicker than my previous 35" setup on stock gears (previous Jeeps, not this one).How do you feel the 4.56’s push those 37’s. Lots of people say 4.88 is a must, but interested in your opinion.
Think about it brother, lots of people here swear that they are fine on 37s with stock 4.10 gears. Although I know that they just don’t know how much better their Jeep would be on 4.56 or 4.88, you’ll be fine with 4.56 and 37s.Are you hitting 8th on the highway? I’m less concerned about much else.