Will a lift and big tires effect my MPG? - Jeep Wrangler Forum

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Old 07-27-2012, 09:23 AM   #1
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Will a lift and big tires effect my MPG?

I know a lifted Jeep with big mud tires isn't going to run or drive as smooth as one straight out of the factory, but how drastically will a lift and big tires effect the gas mileage of the Jeep?

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Old 07-27-2012, 09:30 AM   #2

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What gearing/tranny/size/weight are all going to determine the loss in PG's

So....... Yes

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Old 07-27-2012, 11:56 AM   #3
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Old 07-27-2012, 12:26 PM   #4
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Larger tires and wheels = more mass and inertia. The engine has to work that much harder to overcome the inertia when stopped at a stoplight and accelerate the vehicle to speed. Larger tires can also mean a larger contact point with the ground and that means more friction.

A harder working engine consumes more fuel for an equivalent outcome and that equals lower miles per gallon realized.
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Old 07-27-2012, 12:27 PM   #5
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If you get the tire size/gearing right, the effects can be minimal.
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Old 07-27-2012, 12:31 PM   #6
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Old 07-27-2012, 02:21 PM   #7
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Is this a serious question?
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Old 07-28-2012, 08:39 AM   #8
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I was already fairly geared (Rubi). After a 33" x !2.5" x 15" tire and wheel swap I didn't really notice any diff in my MPG.
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Old 07-28-2012, 09:56 AM   #9
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Thanks MarkNog and Rayko. That was helpful.

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big tires , gas mileage , lift , mpg , mud tires

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