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Thread: Rear end upgrade

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    Rear end upgrade

    I have been undecided on the size of tire to put on my '13 JKU. I planned on 31's and putting on a 1-2"body lift. I like the 33's better, so what, if necessary, would it cost me to have my axles regeared? I apologize in advance(Jeff) if this question should ne in the newb forum

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    i dont think you need to regear the rears ..but i could be wrong..i run 33's with stock dana 35 axle
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    Re: Rear end upgrade

    Its a jk... First stock is 32" (or about 31.5) so I don't think you want 31s. Second no one can tell you if you need to regear if we don't know what gears you have now. I could be 3.21, 3.73, or 4.10 that said if you want 33s you probably don't need gears on a penstar jk.

    Oh and go 1" on the body lift, larger doesn't look so good but and it's a much more involved install.
    Last edited by Drizit; 03-27-2013 at 06:45 PM.
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    Rear end upgrade

    My stock tires are 255/70/18, is that 32 in the standard measurement?

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    Rear end upgrade

    Also, it's got 3.21 Dana 44 in the rear and Dana 30 in the front.

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    Quote Originally Posted by DRTYBLND View Post
    My stock tires are 255/70/18, is that 32 in the standard measurement?

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    Correct, a 255/70R18 should measure approximately 32". Going to 33" tire wouldn't really warrant regearing but 3.21's and 33's isn't really ideal. But double because the 3.6 makes some jam.
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    ...
    Last edited by TiKi; 05-07-2014 at 12:03 PM.

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    Rear end upgrade

    Then I'm confused...I was told a 285-75-17 was a 33x12.5x17 tire...which was supposed to give me a beefier stockier look. So, that would mean I'm gaining an inch in height, but more width? Gawd...I'm going back to the newb forum...lol!

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    Rear end upgrade

    I only have a Sahara, the Bridgestone Dueller AT are about as sexy as...well...they're just shit.

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    Well, this thread shouldn't be in hardcore. it could get moved to newb or general jeep.

    But to answer your question, the 285 (11.2") tire is 30 mm (1.18") wider than the 255 (10.03") tire. And yes, the 285 is approximately 1" taller.

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    Quote Originally Posted by Sugar View Post
    Well, this thread shouldn't be in hardcore. it could get moved to newb or general jeep.

    But to answer your question, the 285 (11.2") tire is 30 mm (1.18") wider than the 255 (10.03") tire. And yes, the 285 is approximately 1" taller.
    Thanks Sug for doing the math. The short answer is Yes, you can install a 1" body lift and 33" tires without re-gearing. You'll loose a tiny bit of acceleration. This will lift you about 1" overall height and widen the stance by about the same.
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    Rear end upgrade

    Please see the rules posted here

    http://www.jeepkings.ca/forums/showt...707#post953707


    But just for Elsa this is now stickied as an example of "what is not hardcore"
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    Re: Rear end upgrade

    Quote Originally Posted by igotafrigginjeep View Post
    Please see the rules posted here

    http://www.jeepkings.ca/forums/showt...707#post953707


    But just for Elsa this is now stickied as an example of "what is not hardcore"
    I'm so glad I never look at what forum things are in... I'd cry.

    What ken is getting at is yes the tires are 1" taller however that gets you half an inch above the axle and only half an inch below the axle where it matters. On a jk you can run 33s with no lift but plan on it rubbing the fenders when you flex. The body lift Noltz sugested will help you clear the tires cheaply it will also make washing the jeep more effective. It will however do nothing to get your belly over obstacles.

    I'm with Ken, look for rubi take offs this will get you some 17" rims giving you more sidewall and making your next set of tires quite a bit less costly. It will also leave you with the dualers for winter. The extra with of the 285s will look a bit better but what really makes the difference Is the offset of the rim. If you put those tires on the same Sahara rims it won't look much better.

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    I'm lawling at the sticky.

    Here is a pic of what I think is 285's on a new JK with no lift. I actually took this pic this morning because I was lawling at how the diesel rice exhaust style has made it onto a JK. Had to laugh at the hardcore hitch clevis and huge dual exhaust tips that had more over hang than any other part at the back of the heep.

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    Rear end upgrade

    Quote Originally Posted by Drizit View Post
    I'm so glad I never look at what forum things are in... I'd cry.
    Meh...if I didn't know the OP I would have just moved it. Seeing as I have met her a few times I figured I'd bust her...uhm...never mind.


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    Quote Originally Posted by CTD NUT View Post
    I'm lawling at the sticky.

    Here is a pic of what I think is 285's on a new JK with no lift. I actually took this pic this morning because I was lawling at how the diesel rice exhaust style has made it onto a JK. Had to laugh at the hardcore hitch clevis and huge dual exhaust tips that had more over hang than any other part at the back of the heep.

    Click image for larger version. 

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    not sure about the colour ..snot green

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    Quote Originally Posted by Piratexpress1369a View Post
    not sure about the colour ..snot green
    Yeah, that colour is fugly, huh? lol

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    I think those look like the Gbison Metal Mulisha exhaust tips; I considered it, only until I saw how much they stuck out the back. Not really practical for wheeling. I'd think they'd damage easy.

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    That green JK is a garden variety Mall Crawler

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