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New Raptor Load Range C 37s?

Jay Gatsby

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That is absolutely not how tires are measured please reread the previous posts you are misleading people! You have to put a straight edge across the top of the tire like a ruler and you measure to that you DO NOT measure just to the edge of the tread like you have done!!!
In all fairness, it appears he did line up the camera lense with the outter diameter of tire. Although not as accurate as a straightedge, it does give us an idea. He did mention taking both measurements in the past.
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RubiRed

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I'd love to see pictures with some measurements and indicating the tire pressure on them.
Here you go, best I can do by myself. It's rather difficult to keep a straight tape measure and level ski pole while snapping a pic. :facepalm:

I originally reported 24 psi based on chalk test. I later found out my tire gauge was off and the actual pressure was even lower at 22 psi. I decided that's too low for my comfort. My tires are now set to 27 psi and I'll try it out for a while. I have 2 door JLR. As you can see my tires are undoubtedly above 35" using the ruler test with the vehicle weight on them.

Also update I decided to put a 2" spacer lift in the next couple weeks since I have a Wheeling trip coming up. Planning to stop by the sand dunes along the way. I'm less concerned about the 1 mph rock crawling/flexy stuff and more worried about running the dunes at high speed. Still have not encountered any rubbing in normal driving.

Jeep Wrangler JL New Raptor Load Range C 37s? 7E2EA7CB-0ABF-4107-A210-84C898FB86CE
 

alksion

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Okay with those who have tested these tires on their rig, since the 392 comes with a sort of 2" what else would be needed to ensure no rubbing off road? Just spacers or a larger lift entirely?
 

RubiRed

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Okay with those who have tested these tires on their rig, since the 392 comes with a sort of 2" what else would be needed to ensure no rubbing off road? Just spacers or a larger lift entirely?
I haven't been reading much on the 392. If it's true 392 comes 2" taller then check out this video which will give you a pretty good idea. I believe 392 wheels have the same offset as Rubicon wheels right? The two things you should note are:
  1. When steering is turned all the way tire would rub the lower control arms. He covers that in the video and if you're willing to accept a slightly bigger turning radius he suggests a relatively easy fix. No wheel spacers necessary.
  2. This guy's video has a 2" spacer lift kit that also includes 2" bump stops. While the 392 rides 2" higher you may possibly need bump stops to limit the flexing that'll cause the tire to hit your fenders. Teraflex makes a front+rear bumpstop kit for JLs. The rear ones can be installed without even pulling the tire if you crawl under. The front ones require the spring to be removed.
You shouldn't need anything more than possibly the bump stops to go offroad with no rubbing. This will retain your factory ride too. As to larger lift well that's a personal question. It's more of want than need. If you don't feel convicted on a larger lift, it's always good idea to start using what you have and you'll develop an idea of what you might want.

 

alksion

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I haven't been reading much on the 392. If it's true 392 comes 2" taller then check out this video which will give you a pretty good idea. I believe 392 wheels have the same offset as Rubicon wheels right? The two things you should note are:
  1. When steering is turned all the way tire would rub the lower control arms. He covers that in the video and if you're willing to accept a slightly bigger turning radius he suggests a relatively easy fix. No wheel spacers necessary.
  2. This guy's video has a 2" spacer lift kit that also includes 2" bump stops. While the 392 rides 2" higher you may possibly need bump stops to limit the flexing that'll cause the tire to hit your fenders. Teraflex makes a front+rear bumpstop kit for JLs. The rear ones can be installed without even pulling the tire if you crawl under. The front ones require the spring to be removed.
You shouldn't need anything more than possibly the bump stops to go offroad with no rubbing. This will retain your factory ride too. As to larger lift well that's a personal question. It's more of want than need. If you don't feel convicted on a larger lift, it's always good idea to start using what you have and you'll develop an idea of what you might want.

Wow, thank you! That was incredibly helpful. I am going to look into the bump stop route then :) I am going to leave it factory for minimum 6 months except the tires and what now sounds like the bump stops.
 

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gato

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Here you go, best I can do by myself. It's rather difficult to keep a straight tape measure and level ski pole while snapping a pic. :facepalm:

I originally reported 24 psi based on chalk test. I later found out my tire gauge was off and the actual pressure was even lower at 22 psi. I decided that's too low for my comfort. My tires are now set to 27 psi and I'll try it out for a while. I have 2 door JLR. As you can see my tires are undoubtedly above 35" using the ruler test with the vehicle weight on them.
Thanks for posting the picture and measurements, other than the fact that my Jeep is a JLUR, and I measured it with my typical weight before passengers (with my tools and recovery gear) of 5,200 lbs, I don't know what could account for the difference.
 

RubiRed

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Thanks for posting the picture and measurements, other than the fact that my Jeep is a JLUR, and I measured it with my typical weight before passengers (with my tools and recovery gear) of 5,200 lbs, I don't know what could account for the difference.
Yeah I'm curious to hear what height others get as they mount these new tires. Using the same ruler-on-top method. Whether the vehicle's weight really impacts the height a lot. @gato you're running the Load D which is a variable. By chance do you have a lot of miles on them that's worn down the tread?

Loving the competition from Ford. Not only will the Bronco make the Wrangler lineup better, they're giving us better tire options. :clap:

Looks like I may not be regearing any time soon. No shop in my area charging less than $3000 seems to have availability before September.
 

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So has anybody had a chance to compare ride quality(offroad as well) on BOTH a KO2 37, D Rated vs KO2 37, C-Rated, back to back yet?

I've been riding on KO2 37, D rating for the last two years, with 8000miles on them, so I'm wondering if it's worth taking mine off to sell, and buy the C-rated ones?
Is the contrast really worth it?
 

gato

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So has anybody had a chance to compare ride quality(offroad as well) on BOTH a KO2 37, D Rated vs KO2 37, C-Rated, back to back yet?

I've been riding on KO2 37, D rating for the last two years, with 8000miles on them, so I'm wondering if it's worth taking mine off to sell, and buy the C-rated ones?
Is the contrast really worth it?

Did you feel any negative change in ride quality going from load range C 33s to load range D 37s? I didn't.

Minor adjustments in tire pressure are much more noticeable than the difference between load range C or D on a tire. I doubt many people can correctly pick out which tire they are driving on (37Cs cs 37Ds) on a blind test.
 

Caseman2

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Okay with those who have tested these tires on their rig, since the 392 comes with a sort of 2" what else would be needed to ensure no rubbing off road? Just spacers or a larger lift entirely?
If these are basically 35s wouldn't you be perfectly fine because people run 35s with no lift.

Is the best thing about these is the weight savings?
 

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alksion

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If these are basically 35s wouldn't you be perfectly fine because people run 35s with no lift.

Is the best thing about these is the weight savings?
That was my thinking all along.
 

SouthernJL

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If these are basically 35s wouldn't you be perfectly fine because people run 35s with no lift.

Is the best thing about these is the weight savings?
Most 35's come in just under 34 inches. The 37 in Ko2s seem to measure just over 35 inches and they weigh less than most 35 inch tires. So you get a bigger tire that's not TOO big and it also weighs less.
 

jlang

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If these are basically 35s wouldn't you be perfectly fine because people run 35s with no lift.

Is the best thing about these is the weight savings?
The weight savings is the reason I am going with these yes.
 

Mattyp1214

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If these are basically 35s wouldn't you be perfectly fine because people run 35s with no lift.

Is the best thing about these is the weight savings?
They are bigger than 35s, more like a 36 but the weight of a 35. Best of both worlds. Everyone is so hung up on their exact diameter, I think the group of us that have bought them were more for the C rating than the size. If I wanted size I would’ve gone toyo or cooper. All bfg run a little small, more like an in between size. It is what it is
 

Caseman2

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Maybe I should look into these then, how are they for no lift? Guessing they rub.
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