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upgrading tire size w/ 3.21 gears

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Old 10-23-2017, 04:24 PM
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Default upgrading tire size w/ 3.21 gears

I have a '16 jku auto with 3.21 gears. Im looking into getting a 2 inch rancho sport lift with either:

Duratrac 295/70r17 (33.5x11.6 ~ 58lb)

OR

Nitto Ridge Grappler 285/75r17 (33.9x11.26 ~ 65lb)

I like the look of the ridge grapplers but I'm concerned that they are too heavy and too tall for my gears. I think the 295's will stick too far out the fenders with 4.5 bs and fail inspection. Gear swap is out of the picture for any time soon, anyone running these setups or have opinions? thanks
Old 10-23-2017, 04:48 PM
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What do you want to here? Let us know and we will tell you whatever you want is good.
Old 10-23-2017, 05:39 PM
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Both will suck. Stick with 32" or regear.
Old 10-23-2017, 07:51 PM
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Not sure if this will help but .. here's mine with 1.5" spacers and 295 70 18 G2s then bought 18" x 9"- 5" backspace wheels and
295 70 18 G2s.
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Last edited by RoccoV; 10-23-2017 at 07:54 PM.
Old 10-26-2017, 03:06 AM
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Originally Posted by rob_engineer
Both will suck. Stick with 32" or regear.
Correct. 32" is about the max for 3.21's, even in flat country, much less hills. Also, I went from the Rubicon 32's (275 70 R17) to a much less wide 235 85R16. Much less rolling resistance, and therefore better mileage and passing ability.



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