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Need to regear to put 35s?

Discussion in 'Wrangler JK (2007-2017)' started by Kenny672, Jul 10, 2019.

  1. Jul 10, 2019 at 12:58 PM
    #1
    Kenny672

    Kenny672 [OP] New Member

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    i have a 2014 JK Sahara with a 2.5” suspension lift.
    Do I need to regear to put 35’s on it?
     
  2. Jul 10, 2019 at 2:05 PM
    #2
    Blue Baby Sound

    Blue Baby Sound Well-Known Member

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    All the world's indeed a stage And we are merely players Performers and portrayers Each another's audience Outside the gilded cage
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    What gears do you have? Standard 3.21 or optional 3.73?
     
  3. Jul 10, 2019 at 8:09 PM
    #3
    JKBob 25

    JKBob 25 Well-Known Member

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    Welcome @Kenny672 . What @Blue Baby Sound said.
    Your lift has nothing to do with your gearing. It's your tire size.
    I'm running 35s with 3,73s. But I also recalibrated my tranny with a Flashcal Superchip. Response is awesome...mpgs also.
     
  4. Jul 11, 2019 at 7:38 AM
    #4
    Kenny672

    Kenny672 [OP] New Member

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    Thanks!
    I’m not sure what gears are in it.
    Is there a label plate somewhere to reference?
     
  5. Jul 11, 2019 at 3:06 PM
    #5
    aggrex

    aggrex Well-Known Member

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  6. Jul 11, 2019 at 3:49 PM
    #6
    Kenny672

    Kenny672 [OP] New Member

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    Thanks for the info!
    It does have 3.73 gears in it.
    So looks like I’ll get the tires and recalibrate with a chip.
     
    Blue Baby Sound and JKBob 25 like this.
  7. Jul 11, 2019 at 3:53 PM
    #7
    aggrex

    aggrex Well-Known Member

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    Ok...keep us up to date on your build :jeep2:
     
    JKBob 25 likes this.
  8. Jul 11, 2019 at 6:36 PM
    #8
    JKBob 25

    JKBob 25 Well-Known Member

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    20180523_160726.jpg
    That's sittin on 35s. Recalibrated. Highway mpgs. And, believe it or not. I've hit 20 plus with a tail wind. True story. So it is possible with 3.73s.
     
  9. Jul 12, 2019 at 6:58 AM
    #9
    jeepavalanche

    jeepavalanche Well-Known Member

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    I guess many people have different needs. Ive driven a JKU with TF 4 inch lift with 37's and stock 3.73 gears and it drove absolutely fine. Plenty of pull off the line, passing acceleration, etc.
     
    JKBob 25 likes this.
  10. Jul 12, 2019 at 7:18 AM
    #10
    aggrex

    aggrex Well-Known Member

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    Everybody's butt meter is a bit different but as long as they are content with the response is all that matters. But I would definitely regear for 37s to regain the mpg and performance response off-road where it counts.
     
    JKBob 25 likes this.
  11. Nov 12, 2019 at 8:44 PM
    #11
    o|||||||o

    o|||||||o Well-Known Member

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    A few.
    Well, once got a 3.5” lift and 35s .. I lost my 6th gear kinda .. sorta, manual, too ..

    Not sure the local shop did a good job here .. damnit ...

    I have no clue whatsoever how to recalibrate ...
     
    JKBob 25 likes this.
  12. Nov 13, 2019 at 4:27 AM
    #12
    aggrex

    aggrex Well-Known Member

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    Depending upon stock gears 35s might be tolerable but programmers are out there especially for jeeps with auto trans. Not only will the speedo be off but the shift points are going to be affected.
     
    JKBob 25 likes this.
  13. Nov 13, 2019 at 6:26 AM
    #13
    jeepavalanche

    jeepavalanche Well-Known Member

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    I don't get all the regearing urgencies. I have driven a 2008 JKU (non rubicon) with 37's, winch, and rear bumper and it drove just fine on stock. My current jeep jku is on stock gears with 35 X 12.5 R17's, RugRidge front bumper with winch, rear bumper with spare tire and spare tire swing-gate and it can pull out on the line just fine. Its not a vette, mustang, or muscle car but I can pull out in front of traffic and get up to speed with ease.
     
    JKBob 25 likes this.
  14. Nov 13, 2019 at 7:25 AM
    #14
    aggrex

    aggrex Well-Known Member

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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Check out the JSCAN program on their website. Inexpensive and works with your smart phone. This product is much less expensive than the ProCal FlashCal etc. Since you have MT it will be nice to have an accurate speedometer
     
    JKBob 25 likes this.
  15. Nov 13, 2019 at 11:11 AM
    #15
    o|||||||o

    o|||||||o Well-Known Member

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    According to all those speed meter thingies at those millions of schools around here, my speedometer is pretty good still, just my gas mileage is not... LOL
     
    JKBob 25 likes this.
  16. Nov 13, 2019 at 11:21 AM
    #16
    aggrex

    aggrex Well-Known Member

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    My mpg takes a hit whenever passing those speed meter thingies on non-school areas on the road. Different color lights and alarming flashes occur when the speed recorded grossly exceeds the posted limit.
     
    JKBob 25 likes this.

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