tooslow76

How bad is the gas mileage from a 35 inch tire to a 37 inch tire with 488 gears

scooby snacks

I get 14'ish in town and 16'ish on the highway. I have a 2012 Rubi - 3.6 with AT.

urmyboyblue

Out of curiosity, are you pulling that from the dash readout or manually calculating. I always forget to write down mileage when I fill up so I go by what the dash says...with a 3.6, 4.56s, and 35's I never see above 14.9 unless I go on a long trip (3 hours) and I'll see maybe 15.2. I've been contemplating 37's.

Sorry for the thread jack.

951Rubi

Weight of wheels and tires needs to be taken o to consideration when comparing mirage and such. Rotating mass plays a huge role in it all.

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numbah1

I'm getting 18 mpg highway on my 37's and 4.88 gears. It's tuned with the Superchips Flashpaq.

tooslow76

I'm getting 12.5 to 13.8 to the mile

TheDirtman

worthless thread.

scooby snacks

Mine is hand calculated. I don't really make vehicle purchases or modification decisions based on gas mileage. I've had nothing but gas or diesel guzzling hogs for the past 20 years so I just look at it as part of ownership.

08XRedRockHD

I have an '08 JKU (3.8) with 6MT & 4.88 on 35". I get 15MPG average and 17MPG on highway long drives calculated by GasCubby app.