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Old 09-10-2007, 03:23 PM   #1
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Question Highway MPG with 3"lift and 33" tires?

Hello all,

I have a 2002 TJ which has a BDS 3" lift installed along with 33" Dick Cepek tires.

My question is as to what kind of gas mileage I should expect to get on the highway.

This is a daily driver for me and it was fine when I worked just a few miles from home but now I have switched jobs and commute 130 miles a day (65 miles each way)

To the best of my calculations I am only getting about 13 miles per gallon on the highway. Does this sound right? This seems incredibly low to me. I honestly use 2/3 of a tank just to get to work and back!!!

Is there anyone else with a similar setup that could tell me what mpg they get on the highway?

My dilemma here is that if there is something wrong with my jeep then I can have it looked at and get it corrected but if this is to be expected then I need to get a more fuel efficient commuter car for the drive to work! That or switch jobs again!

Thanks so much!
--Malloc

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Old 09-10-2007, 03:27 PM   #2
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The problem is gearing. To regain some of that milage and lost power, you need to have the axles regeard. But I wouldn't expect 20mpg after a regear, but maybe like 16-17mpg. It also depends on how many hills you have to drive up.

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Old 09-10-2007, 03:46 PM   #3
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i had a 3" lift and 33s on my 2002 TJ with 3.73 gears and a 5 speed. i was getting about 12-12.5 mpg. i would make 200 miles per tank. 220 miles and i knew i was on borrowed time.
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Old 09-10-2007, 04:54 PM   #4
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I have a 4 inch kit and bfg 33x10.50 mud terrians w/3.73 gears, and I am getting about 20-19 on highway and 16-17 around town. I allso give my jeep a tune-up once a year. Try checking your tire pressure also My brother runs his jeep with 34's at 12psi and he is getting about 13mpg. Says it takes to long to airdown when he hit's the trails even though he has the deflators on his tires.
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Old 09-10-2007, 05:56 PM   #5
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Lift size shouldn't matter; its all about gears and tires.

35's with 4.10's on a 5-speed and I pull 13-14 in town. 'course that is heavy on the skinny pedal and with a few hundred pounds of extras added on...
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Old 09-10-2007, 07:22 PM   #6
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did u cheang ethe speedo gear??

if not it will be off by 1.13

so ur mpg is actually getting 14.6 mpg!

feel better?

also remember that when the officer cathces you for speeding and you thought u were oging the speed limit :-O
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Old 09-10-2007, 07:24 PM   #7
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Quote:
Originally Posted by Malloc View Post
Hello all,

I have a 2002 TJ which has a BDS 3" lift installed along with 33" Dick Cepek tires.

My question is as to what kind of gas mileage I should expect to get on the highway.

This is a daily driver for me and it was fine when I worked just a few miles from home but now I have switched jobs and commute 130 miles a day (65 miles each way)

To the best of my calculations I am only getting about 13 miles per gallon on the highway. Does this sound right? This seems incredibly low to me. I honestly use 2/3 of a tank just to get to work and back!!!

Is there anyone else with a similar setup that could tell me what mpg they get on the highway?

My dilemma here is that if there is something wrong with my jeep then I can have it looked at and get it corrected but if this is to be expected then I need to get a more fuel efficient commuter car for the drive to work! That or switch jobs again!

Thanks so much!
--Malloc
I think we are driving the same Jeep! My mileage isn't much better! The faster you go, the worse your mileage will be, even if you take it easy getting there. Ease up to speed, and set the cruise ASAP! Check your tire pressure, and keep it under 65 as much as possible. I get about 14-15 doing that, on the turnpike, a little better on I-75 going a little slower.

BTW, I like the trailer, although the pics are too small to get a good look! Make sure to post some bigger pics in some of the show off your ride forums, and post a link here when you do!

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And the most important safety, I never put my booger hook on the bang switch unless I'm ready to fire.
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Old 09-10-2007, 08:18 PM   #8
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Quote:
Originally Posted by rketr View Post
Lift size shouldn't matter; its all about gears and tires.

It shouldnt but it does. More wind up there so the brick is higher in the air.

I also have to agree w/ Derek. Malloc did you change your speedo gear when installing bigger tires? Is your speedometer accurate?

Sgnellet, did you lift the trailer too? Seems like it has few " of lift on it
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Old 09-10-2007, 10:07 PM   #9
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Quote:
Originally Posted by debruins View Post
did u cheang ethe speedo gear??

if not it will be off by 1.13

so ur mpg is actually getting 14.6 mpg!

feel better?

also remember that when the officer cathces you for speeding and you thought u were oging the speed limit :-O
A "defective equipment" ticket costs more than a "speeding ticket."
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Old 09-10-2007, 10:29 PM   #10
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I have a 2002 X, 3 speed auto, 3.73s and 33s. I average 15 to 16 on the highway. I try to maintian 65 to 70. I have the corrected speedo gear as well.

I have a Flexalite E fan, deep trans pan, and fresh oil in everything. Also running a true flow drop in filter.
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Old 09-10-2007, 10:44 PM   #11
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33's, 3" lift and 4.10 gearing and get 16 on the highway. Running 80 miles a day 45 miles of it being at 72 mph.
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Old 09-10-2007, 11:08 PM   #12
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I have your solution buy a motorcycle 45+ MPG you'll be glad you did.
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Old 09-10-2007, 11:11 PM   #13
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I have your solution buy a motorcycle 45+ MPG you'll be glad you did.
I am probably gonna take a class this winter

btw here is something i just found online

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Old 09-10-2007, 11:44 PM   #14
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Sgnellet, did you lift the trailer too? Seems like it has few " of lift on it
Nope, but when I get a few minutes, those wheels are coming off and getting a pair of my old 30's. that ought to level the field a little!
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And the most important safety, I never put my booger hook on the bang switch unless I'm ready to fire.
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Old 09-10-2007, 11:46 PM   #15
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I am probably gonna take a class this winter

btw here is something i just found online

I think I might have to take that thing out if I saw it for real!
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And the most important safety, I never put my booger hook on the bang switch unless I'm ready to fire.
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Old 09-10-2007, 11:55 PM   #16
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A "defective equipment" ticket costs more than a "speeding ticket."
Really?

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Old 09-11-2007, 12:28 AM   #17
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Maybe in Texas.
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Old 09-11-2007, 02:53 AM   #18
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Maybe in Texas.
sometimes in oregon too, cause even if the court does throw out the ticket, you still have to pay the filing charges, and court fees. it can get really expensive.
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Old 09-11-2007, 07:47 AM   #19
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33's and 3.73's. If I use fifth I get about 10 to 13 on the highway at 65 mph. If I stay in fouth at 60 to 65 MPH I hold at about 17 give or take a few MPG. Strange HUH??? not really in fourth at those speeds the jeep hangs between 2300 to 2500 RPM's. The Jeep doesn't have to work as hard to maintain Highway speeds. I only use fifth in west Texas where the speed limit was raised to 80MPH.

Just to add FIX-IT TICKETS blow, I've been told by an officer they are usually only used to pull someone over that is suspicious or is giving the officer grief.
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Old 09-11-2007, 09:02 AM   #20
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I have your solution buy a motorcycle 45+ MPG you'll be glad you did.
Unfortunately, I sold my bike a few years back... But you are right I have recently been thinking about getting another one.
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Old 09-11-2007, 10:44 AM   #21
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I have 33's x 12.5" x 15 with stock 4.10 gearing with a 4 cyl. w. manual tranny & I get around 15 to 16 mpg city. I'm gentle on the gas pedal though. With stock wheels & tires I got 17 - 18 mpg.
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Old 09-11-2007, 07:43 PM   #22
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I get about 16 +/- (combination hgy/town) with a 4.0 99TJ with 33x10.50 A/T's and 4:10's with a 3 spd auto,with a 3" lift, and the correct speedo gear.

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