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Old 05-03-2013, 02:30 AM   #1
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fuel economy list gears and tire size

Good place to list fuel economy to gear and tire sizes...

What's the average fuel economy for a 3.8 manual running 33's and 35's with 4.88 gearing?

And if anyone else wants to list there gears tyre sizes and fuel economy that would be great

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Old 05-03-2013, 03:00 AM   #2
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Not sure about those but I'm running 4.10s with 285/75/17 Toyo M/Ts. Im hitting about 15 in town and 19 highway. Give or take and MPG or two.

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Old 05-03-2013, 05:18 AM   #3
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I'm running 295/75r17 & 4.10 automatic. Checked it today & it was 16 mpg.
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Old 05-03-2013, 11:32 AM   #4
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3.8 auto, (sorry, not manual) but 35s, amor, 19 and I play with the skinny pedal hard, 3.73 gears. I get 17 when I grandma it. I was getting 15 this morning but there was 40mph winds, so that killed it.
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Old 05-03-2013, 11:35 AM   #5
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2012 JKU
3.21
285/70/17 Toyo at2, fuel mavericks
19+mpg dd
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Old 05-03-2013, 11:59 AM   #6
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2012 JK 2 Door
315/70r17 Goodyear Duratracs
2.5 AEV Lift
4.56 Gears
19.1 MPG
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Old 05-03-2013, 03:46 PM   #7
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2013 JKUR auto with 3.73 gears 255/75/17 stock tires
2000 miles
16 city
18-21 highway
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Old 05-03-2013, 04:44 PM   #8
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2013 jkur, 3.73 on 35's, auto
13 in town, 15 on the highway
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Old 05-03-2013, 04:55 PM   #9
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37's with 5.38 gears...........................when the gas gauge gets below 1/4................put gas in!!!!!!!
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Old 05-03-2013, 07:21 PM   #10
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Quote:
Originally Posted by JEEPDON View Post
37's with 5.38 gears...........................when the gas gauge gets below 1/4................put gas in!!!!!!!
Lol
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Old 05-03-2013, 10:31 PM   #11
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08 2 door auto
3.73 gears w/ superchips
37x13.5 toyo mts
14 mpg
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Old 05-05-2013, 03:18 PM   #12
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2013 jku sport auto, 3.73 on 315s - 16.6 city, 17.8 highway.
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Old 05-05-2013, 03:40 PM   #13
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2008 Unlimited, 3.8L auto, 3.73, Superchips, heavy Pitbull tires true 35", OD Off most of the time average 17-18mpg. With 35" Duratracs the average was 18-19mpg.

Tire weight can play a major roll in mpg.

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