Jeep Wrangler Sport Upgrade - 265/70/17 or 285/70/17?

Abdelxziz

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I've been running 265/70/17 K02s for over 7k miles and haven't noticed a difference in performance/mpg. However, I have the 3.6 engine. This is my daily driver so I was concerned about impacting fuel expenses etc. There is no rubbing at all either.

Here's a picture on my JLU before I installed the rubicon suspension.

20190630_180437_crop_16_resize_6.jpg
Did you notice any differences in the speedometer speed?
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Did you notice any differences in the speedometer speed?
Only sight difference in speedo. Maybe 1 or 2 mph off at highway speeds when compared to GPS.
 

CGRubicon

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Just bought a 2019 JL 2 Door Sport. Can I use stock Rubicon takeoffs (KO2’s or Falken’s) without any other modifications or speedo recalibrations needed?
 
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yell03

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Just bought a 2019 JL 2 Door Sport. Can I use stock Rubicon takeoffs (KO2’s or Falken’s) without any other modifications or speedo recalibrations needed?
Yes, speedo will be slightly off, not worth doing the calibration. Shifting and drivability will not be affected at all.
 

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Yes, speedo will be slightly off, not worth doing the calibration. Shifting and drivability will not be affected at all.
Thank you
 

HighGs

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I ended up with the 285/70/17s BFG KO2s C Load Rating.
MPG is actually the same.
Performance seems the same.
It is only a 3% difference in tire height, a little more than 1 inch taller, so not much of a difference.
The -6mm offset of the Fuel 17x8.5 rimsmakes it seem bigger than it is, has an aggressive stance.
No rubbing.
Sorry if I missed this, but did you install any kind of lift or just stick with the stock suspension?
 
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yell03

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Sorry if I missed this, but did you install any kind of lift or just stick with the stock suspension?
I left the suspension stock. No problems and running great almost a year later.
 

erickdiaz019

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I've been running 265/70/17 K02s for over 7k miles and haven't noticed a difference in performance/mpg. However, I have the 3.6 engine. This is my daily driver so I was concerned about impacting fuel expenses etc. There is no rubbing at all either.

Here's a picture on my JLU before I installed the rubicon suspension.

20190630_180437_crop_16_resize_6.jpg
Do you have a picture of after you installed the rubicon suspension? I wanna see what 265/70/17 looks like with a takeoff Rubicon suspension.
 

Htfan

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Do you have a picture of after you installed the rubicon suspension? I wanna see what 265/70/17 looks like with a takeoff Rubicon suspension.
Here's a picture from a while ago shortly after Rubicon suspension installation
20210314_082341.jpg
 

erickdiaz019

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Here's a picture from a while ago shortly after Rubicon suspension installation
20210314_082341.jpg

WOW that stance looks really cool! Do you happen to have a picture directly from the side? And are wheel spacers necessary to avoid rubbing?
 

Htfan

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WOW that stance looks really cool! Do you happen to have a picture directly from the side? And are wheel spacers necessary to avoid rubbing?
Thanks! I'll need to see if I have a direct side shot.

Wheel spacers are completely optional. No rubbing. However, I have 1.5" spacers to improve the stance.
 

erickdiaz019

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Thanks! I'll need to see if I have a direct side shot.

Wheel spacers are completely optional. No rubbing. However, I have 1.5" spacers to improve the stance.
Ok. And what pressure are you running these tires at?
 

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Htfan

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Did you just arbitrarily pick that psi to run with?
No, I had some steering wander issues early on before a series of TSBs/updates and reduces psi at that time. Too high psi can also cause part of the problem. Working well overall and steering is solid now. No urgent reason for changing/increasing.
 
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