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Discussion Starter #1
Hello im new here,
I have an 07 rubicon
2 door automatic
With a 3.5 rk mid arm suspension
I want to go to 37 wrangler m/t on oem 17"
What ratio should i use? And im thinking of 2.0" bs
It has stock gears
 

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Right now you'll be hard pressed to find a set of 37" mtr/k's. I'd start shopping around for a different 37" tire. I have a 2 door rubi on 37's. Consider the other upgrades you'll need before jumping to 37's. You'll want to sleeve and gusset the front axle, get atleast front axle shafts, and consider drag link flip too. Stock 4.10's with 37's is going to feel anemic with an automatic. I'm running 5.13 gears and while it's acceptable I'd rather be running 5.38's. 2" of bs and your wheels/tires are going to be sticking WAYYY out from the body.
 

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I have a 6spd, running 5.38 with 37s
and there is a set of four mtr/k on race-dezert.com for 1300+shipping.

I'd say go for it. I ran 3.73 for over a year and did ok. def plan on upgrading to 5.13/5.38 soon though.
 

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He you go!

2 Door
2.5 Rock Krawler Lift
37 MTRs on 17" Wheels
5.38 Gear
Front ProRock 44
Rear Nitro 35 Spline Shafts and Locker
RIPP SUPERCHARGER MONDAY!!!!!!!!!!







 

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hey Zeus, as far as wheel back space 4.25" to 3.5" should be plenty to keep the tires from rubbing even 37x13.5 r 17.

and thanks for the pics media. I've been debating the trail stinger for a while now and yours are the first pics that let me see how tall and forward it is. no one around me has one to look at in person.
 

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Here's another one:

2.5 Rock Krawler
37" MTRs
Wheels are 4.75" Back Spaced and I run 1.25" Spidertrax Spacers - 3.5" Back spacing
Front axle is a D30 with sleeves, gussets, and Nitro axle shafts in it
I'm running 5.13s and a six speed
Do it.
Nice lookin White Jeep ya got there. So, if you could order wheels with any BS, would it be 3.5 or what? Talking about a 12.5 not a 13.5 wide tire. Always heard that 4.5 is perfect but don't want to rub!!
Thanks
 

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The Wheelin Man's Friend
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Nice lookin White Jeep ya got there. So, if you could order wheels with any BS, would it be 3.5 or what? Talking about a 12.5 not a 13.5 wide tire. Always heard that 4.5 is perfect but don't want to rub!!
Thanks
Thank you!

I'd order a wheel with 4 to 4.5 inches of back spacing if you can find one in stock that you like. 4.75 will rub on the lower control arms so you can either adjust your steering stops or put spacers on to widen the stance and get the tires off the arms. I went wider because it looked like a roller skate with those PSC flares.

Marcus
 

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You'll want to sleeve and gusset the front axle, get atleast front axle shafts, and consider drag link flip too.
I would think you would want to do the rear axle shafts if you were only doing one set first. I'm with you on the other stuff but why do say at least front axle shafts?

Just curious

And so I don't totally hi jack...to the OP, Do it!!!
 

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Discussion Starter #17
Ok guys im kind of lost here, i went to my local tire shop and you guys where right, out of wranglers mtr 37, but they have a set of 40" but the are not the kevlar ones, and they are asking for 290 a tire i know its a good price but is it much diferent from 37 to 40? Should i do 40?
I kind of think 40 is to much but now i dont know what to think the price is right for new tires........ Help!
 

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Lots to think about when jumping up from 37 to 40

steering upgrade? Hydro? not sure how you use the rig but the stock pump will stuggle in the texas heat and 40's....
braking upgrade?
stock gearing? lot of meat to pull
front bumper clearance, rock rail and rear pinch seam clearance
axle upgrade, I know you have the 44 but I would recomend C's, sleeves, etc
wheel backspace and lift height???
you should be fine with the RK 3.5 but you will need to bumpstop accordingly for the 40's.....flat fenders

I am running 38's on 4.5 BS with spidertrax spacer. I would seach the 40in thread on here and you can get an idea of what the guys are running.

http://www.jkowners.com/forum/showthread.php?t=29090&page=6
 

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The Wheelin Man's Friend
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Ok guys im kind of lost here, i went to my local tire shop and you guys where right, out of wranglers mtr 37, but they have a set of 40" but the are not the kevlar ones, and they are asking for 290 a tire i know its a good price but is it much diferent from 37 to 40? Should i do 40?
I kind of think 40 is to much but now i dont know what to think the price is right for new tires........ Help!
How bout I sell you my 37" MTR/Ks and I'll buy that set of 40s they've got down there?

:gluging:
 
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