Gas mileage on 35'S

[JRW]

I have 35 K02's and average low 16's in the winter, been getting closer to 18 since it's starting to warm up.

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[Alabama Mud Machine]

Darn, that’s the mileage? I drive a Ram 2500 Cummins, get on avg. to work and back via town roads 14.7 and was hoping to do better with the Glad Rubi I just ordered. Ahhh geez. Well, at least I’ll be able to have a better clearance rig for hunting.

Damn... My fully-deleted and custom tuned 2007 2500 4x4 6.7 Cummins with 20’s & 38’s averages like 17 around town, and about 20 Hwy...

 

[GladiGator]

No reset your computer on your jeep to recognize the 35" tires. Your speedo is off and not calculating your miles right. If you got 3:73 gears on 35's you should be somewhere around 14-15 average.

Thanks for the response. Any recommendations on a tuner?

 

[Jeeperjamie]

Thanks for the response. Any recommendations on a tuner?

I use the JScan, it's around $90 for everything and will get done what you need.

 

[Slapping_Rabbits]

I am glad to see the increase in tire size isn't making that much of a difference in gas mileage. I'm on stock 33 rubicons with 16 mpg. I will say though that a family in law member just bought a v8 ford f150 and they get 18 mpg city and 23 highway. It seems crazy to me that big thing gets better mpg than i do.

 

[Jeeperjamie]

I am glad to see the increase in tire size isn't making that much of a difference in gas mileage. I'm on stock 33 rubicons with 16 mpg. I will say though that a family in law member just bought a v8 ford f150 and they get 18 mpg city and 23 highway. It seems crazy to me that big thing gets better mpg than i do.

I feel the same way but hey he can't take his doors and top off that F150. I'm getting better than I thought I would though.

 

[Slapping_Rabbits]

I feel the same way but hey he can't take his doors and top off that F150. I'm getting better than I thought I would though.

Yep same here. Manual, convertible, off road truck! Can't beat that.

 

[Jaydebe]

Why am I only getting 12.8 mpg with toyo 35's??

We just bought Gladdy a week ago tonight. We've avg. 13.2 pulling a trailer from Idaho to Wa and back. Then once we hit Utah & Colorado; the huge mountain passes and highspeeds with the trailer (5x8 cargo) has dropped our avg. to 11.9 over the last 2315 mls as of tonight.

PS: Stock JTR.

 

[j.o.y.ride]

Depends on speed. At 75 it's like 15.

 

[Jeeperjamie]

Depends on speed. At 75 it's like 15.

I guess it depends on your setup as well and gearing and driving habits. I'm at 18.1 right now running winter gas, 70-78mph on the Hwy about 40% of the time on 35's. I was getting closer to 19 before December. Max Tow 4.10 gears.l, almost 18,000 miles.

 

[Uparms]

17 in general and 20 on the big highway. 35x12.5 BFG AT2s. Max Tow 4.10 , Auto, 26K miles.

 

[Vincent]

18-ish mpg on 315/17r-17 BFG KO2's (E-rated), pedal commander (City-4), winter blend on Sport S w/3.73's and TF leveling kit.

 

[Jonny A]

18 mpg winter, 19 mpg summer. Thought that is pretty good. Better than my stock 2015 Z71 Colorado ever averaged.

 

[Bitching]

6 MPG. 180 miles on the way back never made it past 4th gear. You can literally hear the slurping of gas guzzling. Made me thirsty.

 

[Jonny A]

6 MPG. 180 miles on the way back never made it past 4th gear. You can literally hear the slurping of gas guzzling. Made me thirsty.

So if I do the math... 6 mpg for the Jeep, say the trailer used up 6 mpg and then the trailered pick up 6 mpg. Add them all, looks like the average 18 mpg the rest of us usually see.

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