‘18 Black JLUR - NEW 39” BFG KM3 & Rotiform SIX 17x9, RK X-Factor 3.5” w/ Kings, Road Armor Flares

WhatExit?

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So you are running 39s with stock axles, steering and gears? And you are gonna wheel it like this? I look forward to following how this works out for you.
If this is true (39's with stock axles, steering and gears), and you're gonna wheel it, I predict bad things (as in breaking) will happen. And the 1 lower MPG with the 39's is hard to believe.

I hope it all works out but I'm staying tuned
 
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Dreadnought_Leviathan

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Thank you all for your optimism and votes of confidence.
 

WhatExit?

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Thank you all for your optimism and votes of confidence.
I hope you have zero issues spinning those 39's on stock everything but I'm not optimistic.

From the interwebs (there are many like these and stories from those who've done it):
"Using a larger than stock tire puts a lot of stress on the drive train parts. It takes more power and torque to rotate that larger tire. That means, the drive train, U-joints, drive shafts and axles, take the brunt of that force."
 

Wranglerjlurubicon27

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what did you do with the 37s?? I'm in DFW...............cough cough..............
If your interested in 37’s I have five brand new 37x13.5x17 copper stt pro with less then 4K miles I’m planning on selling. Let me know if your interested.
 

WilhelmSR

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I ran those for 7 years on my JK and never had a single issue. Looks good
 

BHo

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Do you have pictures of the rig flexed so we can see the tire/fender clearances?
 

BHo

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Do you have pictures of the rig flexed so we can see the tire/fender clearances?
Any updates? The post suspense is building...
 

OBJLU

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I bought these a few months ago, so far, so good I have wheeled a couple of King of Hammers trails out in Johnson Valley, no problems, that said - I've seen a few folks I follow on Instagram who run these blow their rear ring and pinion, not right away but over time. Front ring and pinion, even on 40's seems to be holding up.

I'm about to order a semi-float dana 60, 40 spline so that I can wheel these with no concerns.
 

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