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Old 10-18-2018, 06:46 AM
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Tire mpg

I recsntly got a 2018 jeep sahara. It has 255/70r18's. I was wondering how a 33x12.5 a/t would effect my gas mileage.

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Old 10-18-2018, 08:16 AM   #2
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It will affect it, the 12.5" wide more so than the 33". No one can give an semi-accurate guess on MPG without knowing what part of the country, or what country you're in.. as well as your driving style, type of gas you use, etc. I can tell you that our '16 with a 315/70/17 tire got around 15.5 EVIC average in fairly flat Oklahoma.

If gas mileage is a concern for you then I would leave it alone. One might also suggest that if gas mileage is a concern you may have chosen the wrong vehicle If not a huge concern then add your tires and enjoy them!


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Old 10-18-2018, 08:17 AM   #3
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Old 10-18-2018, 10:24 PM   #4
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OP, welcome and your driving the wrong vehicle if your worried about MPGs

Anything larger than factory, then yes
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Old 10-19-2018, 12:54 AM   #5
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Old 10-19-2018, 11:36 AM   #6
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Tread pattern also affects mpg. For example, KM mudders give 1-2 mpg lower than the AT's used on the Sports.
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Old 10-20-2018, 03:39 PM   #7
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2017 JK Willy's 2 Door - 2" lift, 315/70/17 KO2's - Avg MPG: 18-19
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Old 10-26-2018, 12:24 PM   #8
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The Wrangler is so inefficient moving through the air, that any other changes will have very little effect, except for forced induction or lower gears.

I would say the effect is so small as to be inconsequential. At $3/gal, your probably talking about $0.75/100miles at most. That's way cheaper than a pack of cigarettes or a bottle of Jack Daniels and you will feel a lot better after.

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