Question for people with 35s
Thread Starter
JK Enthusiast
Joined: Dec 2012
Posts: 121
Likes: 0
From: Canfield ohio
JK Super Freak
Joined: Nov 2010
Posts: 1,186
Likes: 2
From: Vallejo, CA
The upgrade dilemma in a nut shell. Full stock is the only way to have ~20 mpg in a moving box on wheels. Any bolt on item, even tiny lights on the A pillar will cause drag, reducing mpg. Removing the plastic air dam is a drop in mpg. Going from street biased stock tires to a more aggressive tread in the same size increases rolling resistance: you guessed it, less mpg. Spending thousands in gears, forced induction will never bring it back to what was from the factory. What we all want is huge torque and high mpg. Right now, that's a Hemi V8. ( I'd rather have that Hemi in a light car) When will Jeep give us a diesel? Then we'll have power and efficiency. ( and the fuel will get us away from oil )
JK Newbie
Joined: Jan 2013
Posts: 9
Likes: 0
From: Lake tapps, Wa
I have a 2007 with 35" mtz tires and 4.88 gears and I get 15-18 city and 18-20 on the highway. I live in Wa so mountain passes are a big deal I had 4.10 but it didn't do the job when heading up the pass at all now that I have the 4.88s the performance is amazing!
JK Newbie
Joined: Jan 2013
Posts: 9
Likes: 0
From: Lake tapps, Wa
The upgrade dilemma in a nut shell. Full stock is the only way to have ~20 mpg in a moving box on wheels. Any bolt on item, even tiny lights on the A pillar will cause drag, reducing mpg. Removing the plastic air dam is a drop in mpg. Going from street biased stock tires to a more aggressive tread in the same size increases rolling resistance: you guessed it, less mpg. Spending thousands in gears, forced induction will never bring it back to what was from the factory. What we all want is huge torque and high mpg. Right now, that's a Hemi V8. ( I'd rather have that Hemi in a light car) When will Jeep give us a diesel? Then we'll have power and efficiency. ( and the fuel will get us away from oil )
JK Enthusiast
Joined: Nov 2011
Posts: 337
Likes: 1
From: Apex, NC
2012 JK Rubi 2 door auto. 35 x 12.50 Procomp MTs (really are 34s, i measured....) . 4:10 gears. Procal adjusted. 14.5-15.5 mpg (city/hwy).
2.5 inch terraflex coil lift, bushwhacked flatties, EVO protek skids, AEV rear bumper with tire carrier and hi lift jack mount, LoD rock sliders, LoD armor lite stubby front bumper with Shittybuilt XRC8 wench & steel cable. Only giving you this info so you can see impact of added weight and wind drag due to loss of aerodynamics from lift and added crap. .
2.5 inch terraflex coil lift, bushwhacked flatties, EVO protek skids, AEV rear bumper with tire carrier and hi lift jack mount, LoD rock sliders, LoD armor lite stubby front bumper with Shittybuilt XRC8 wench & steel cable. Only giving you this info so you can see impact of added weight and wind drag due to loss of aerodynamics from lift and added crap. .
JK Freak
Joined: Apr 2010
Posts: 563
Likes: 1
From: Baltimore, MD
2012, Auto, 4.10s bumpers and winch and metal skid plate. 4 door rubi. Pretty heavy.
18-18.5 mpg on highways 60 or below.
Above 65 and/or mountains, 16.5 mpg.
tire psi 32*
And I go easy on the throttle and try to keep it in ECO.
18-18.5 mpg on highways 60 or below.
Above 65 and/or mountains, 16.5 mpg.
tire psi 32*
And I go easy on the throttle and try to keep it in ECO.
JK Enthusiast
Joined: Nov 2011
Posts: 337
Likes: 1
From: Apex, NC
Have you adjusted your speedo with a pro cal? .....because damn dude, thats killer gas mileage......