OH9JK

Drive it like you stole it!!

Kedge

Jeep - 35 mph. Stater 135 mph. Drive it like you stole it! OFF-ROAD.

I think it's a PANZI Scheme.

BKGM Jeepers

Nope. Only the early 2007 X's came with the rear D35. They are fairly rare, though a friend of mine ended up with one, without checking for the 44.

BKGM Jeepers

The programmer should get you better mileage as well.

If you wanted a further test, I'd suggest you borrow a cold air intake filter and by-pass your snorkle. Then compare your mileage between the two.

I get 13.7 MPG with 38's.

FlameRedJK

Have no fear!! I am running that exact same wheel/tire combo (Dig your style btw) on my 2012 with 3.21 gears D44Rear/D30Front....I drive like an asshole most of the time and ZERO problems!!

Just think, if you somehow bust something, you get to replace it with something better!!
Enjoy your Jeep, live a little!

Per the computer, I average about 14.2 with mostly city driving. Haven't been on the highway enough to see what I will get on a long haul. When I am on highway, I sit at about 25-2600RPM @75-80MPH

Shortbuss

My x has had 35's for 170,000km and my bro was rough on it when he had it and I'm no different. Knock on wood the d30 has been fine. Your rubi should be more than fine.

medic_23387

I have 35s and on my two door 6 speed with 4.10 gears and I get 20mpg per tank every time. We will see how my next set of 38s go