Gas Mileage

06 KJ Sport · **Posted:** Wed Jan 16, 2008 1:47 am

I have a 06 KJ, I am interested in putting a 2.5" lift on it. For now I will keep the stock tires and wheels. What kind of gas mileage are most of you with lifts getting? Normal driving and the lead foot effect.

I am currently getting around 18mpg around town.

Thanks

Donnie · **Posted:** Wed Jan 16, 2008 1:50 am

14-15

qbracken · **Posted:** Wed Jan 16, 2008 2:14 am

Donnie wrote:

14-15

Ouch; that's pretty bad.... Does Gas Mileage typically worsen with a lift kit?

tjkj2002 · **Posted:** Wed Jan 16, 2008 2:29 am

qbracken wrote:

Donnie wrote:

14-15

Ouch; that's pretty bad.... Does Gas Mileage typically worsen with a lift kit?

Yes,and after bigger tires,and more armor(wieght).I usually get 9-10mpg's(all city driving) but can squeak 16-17 on the highway,back in SD I can average 20mpg's but it's all flat(east side) and better gas.

Wasatch15 · **Joined:** Wed Jul 13, 2005 7:52 am **Posts:** 242

When I had the Frankenlift with stock tires I was getting 19-21. Note that I have a manual transmission. Now with 245/70/16 I am getting around 18 at best and feel less torque.

nlife · **Joined:** Thu Aug 16, 2007 11:43 pm **Posts:** 226

I can understand the reason for the weight and bigger tires reducing gas mileage, but why does lifting your vehicle say 2.5" reduce gas mileage?

N

tjkj2002 · **Posted:** Wed Jan 16, 2008 10:57 am

nlife wrote:

I can understand the reason for the weight and bigger tires reducing gas mileage, but why does lifting your vehicle say 2.5" reduce gas mileage?

N

From sitting higher you now have more "drag" on the vehicle going down the road.More drag=less mpg's.

Jeepjeepster · **Posted:** Wed Jan 16, 2008 12:45 pm

I get 17-19 mpg on the highway in the winter, alittle higher in the summer. I have a 3" lift and 245/70/16 Yoko A/T's.

dloc_jeep_KJ · **Posted:** Wed Jan 16, 2008 12:52 pm

ill be putting my 245/74/16 MTs on this after noon. i hope it doesnt hurt my gas mileage to bad.. the lift hurt it more than the rack though that suprized me :shock:

.. i bet the tires will be worse than both of them though :cry:

CaKJFreedom · **Posted:** Wed Jan 16, 2008 12:57 pm

Frankenlift, skids, rack and stock wheels and tires I get around 16-17 if I drive normal. (which means lead foot and passing a lot of slow people). When I switch to the MTR/S it drops and I average 14-15ish. Add on the trailer and I get 10-11 with the MTR/S. All totally worth it to have the Jeep.

elephantrider · **Posted:** Wed Jan 16, 2008 1:14 pm

i got 307 miles to a tank last weekend driving all highway.

usually get around 270 - 280 miles to the takn with mixed city / highway driving.

jerbacher · **Posted:** Wed Jan 16, 2008 1:26 pm

15-16 mpg combined city/highway. MT/Rs, steel wheels, 2.5-3.0 lift, lightbar, ski rack..... probably a dirty air filter... :roll:

Prospect62 · **Posted:** Wed Jan 16, 2008 1:55 pm

With 31" tires and steel rims, a 5 speed and an engine with 90,000 miles that has never had a tune up, I got 15.5 on my last tank in 20-30 degree temps and mostly highway driving at 65mph.

tommudd · **Posted:** Wed Jan 16, 2008 2:22 pm

I never really check mine since its a Jeep and what the heck have to spend money somewhere :lol:

but last weekend , ran the turnpike east across Ohio, ran around a couple of towns over there, visited Summit Racing (!!) played Ricky Racer with a couple of my friends with semis coming back and got 17.9 overall. Over averaged about 72/75, back averaged more like 80 or so
Gets way better in the summer than winter though :cry:

Tom

2006 KJ · **Posted:** Wed Jan 16, 2008 2:51 pm

stock i got 19-22mpg depending on the driving conditions.. added the light bar and L.O.S.T. 1-2 mpg.. added the lift, full armor and 32's and now getting 15-16mpg.. however mine is a 6 speed.. and the flowmaster muffler and K&N cold air did improve mpg by roughly 2 mpg

KJ04 · **Posted:** Wed Jan 16, 2008 3:15 pm

With all my extra weight and 32's, I'm getting a whopping 10 mpg in the Winter, and 12 local and 14.5 hwy in the Summer.

My Ranger 4.0 4X4 on 245/75/16's avgs. 15.5 mpg local.

DarbyWalters · **Posted:** Wed Jan 16, 2008 6:54 pm

Have the lifted/bigger tired KJs adjusted the Odometer readings for the larger tires. Probably more than 6% off...just with 235/75/16s and more the larger you go. 15mpg becomes 16.1mpg with just a 6% change

qbracken · **Posted:** Thu Jan 17, 2008 2:21 am

DarbyWalters wrote:

Have the lifted/bigger tired KJs adjusted the Odometer readings for the larger tires. Probably more than 6% off...just with 235/75/16s and more the larger you go. 15mpg becomes 16.1mpg with just a 6% change

Did the dealer do this for you? Sounds like a great way to trick the Fuel management system into giving better mileage!

KJ04 · **Posted:** Thu Jan 17, 2008 1:32 pm

DarbyWalters wrote:

Have the lifted/bigger tired KJs adjusted the Odometer readings for the larger tires. Probably more than 6% off...just with 235/75/16s and more the larger you go. 15mpg becomes 16.1mpg with just a 6% change

Yes, had it reset to rev. per mi. by the dealer.

jerbacher · **Posted:** Thu Jan 17, 2008 1:38 pm

KJ04 wrote:

DarbyWalters wrote:

Have the lifted/bigger tired KJs adjusted the Odometer readings for the larger tires. Probably more than 6% off...just with 235/75/16s and more the larger you go. 15mpg becomes 16.1mpg with just a 6% change

Yes, had it reset to rev. per mi. by the dealer.

how much to they charge to recalibrate? i wouldnt mind doing that so i know for sure that im speeding!

Gas Mileage

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