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37s with stock gears

Discussion in 'Performance and Tuning' started by mixwells, Jun 19, 2017.

  1. Jun 19, 2017 at 9:09 PM
    #1
    mixwells

    mixwells [OP] New Member

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    lets hear some honest reviews, guys running 37s with the stock gears! Can't decide on 35s or 37s:notsure:
     
    Rica25 likes this.
  2. Jun 20, 2017 at 4:45 AM
    #2
    zcarpenter92

    zcarpenter92 Yotas, Coronas and 'Merica

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    Are you lifted high enough to do either, or trying to decide?
     
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  3. Jun 20, 2017 at 6:05 AM
    #3
    mixwells

    mixwells [OP] New Member

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    Yup good to go, just got a BDS 7" kit in the mail! Now on to tire size?
     
  4. Jun 20, 2017 at 6:12 AM
    #4
    zcarpenter92

    zcarpenter92 Yotas, Coronas and 'Merica

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    I don't have 37's, but from what I've read on here the guys who go to 4.88's generally see less downshifting and overall better get up n go. @1UPPER, @Spvrtan and @papasmurf are a few of the guys who run 37's on this site.
     
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  5. Jun 20, 2017 at 6:27 AM
    #5
    osidepunker

    osidepunker OsidePunker

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    37s with stock gears will not harm your truck. You will lose power. Up to you if you are willing to deal with the power loss.

    37s and 4.88 will bring your truck back to stock ratio. So if you like how the truck feels with 32s and 4.30 gears, then that is how 37s and 4.88s will feel
     
  6. Jun 20, 2017 at 6:47 AM
    #6
    1UPPER

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    After having 4.88s installed now with 37s I definitely notice an improvement at highway speeds. My truck gets to highway speeds faster without shifting between 5 & 6th gear as much.
     
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  7. Jun 20, 2017 at 8:46 AM
    #7
    dirtydeeds

    dirtydeeds New Member Vendor

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    You'll want to regear for sure..

    Stock gears on 37's makes the truck feel like there's an extra 1000 lbs in the bed everywhere you go.
     
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  8. Jun 20, 2017 at 11:05 AM
    #8
    KOZ

    KOZ New Member

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    I'm running stock gears with 37" no issues but I also have a TRD Supercharger installed so my opinion isn't really that relevant.

    TRD11.jpg
     
    Last edited: Jun 20, 2017
  9. Jun 20, 2017 at 11:10 AM
    #9
    andy9743

    andy9743 New Member

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    @dirtydeeds is spot on. 4.88s need to happen. He has the best price I could find and is super helpful too! I just did a blower also...everyone should have them. 37s on stock gears were ok for flat roads with no load in bed or truck with the wind pushing you.

    Pay to play. Do 37s do gears.
     
  10. Jun 20, 2017 at 2:52 PM
    #10
    1UPPER

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    I'm loving my new 4.88s and LSD with the 37". I'm still taking it easy for the initial break in period but I notice it's a big difference. IMG_8242.jpg
     
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  11. Jun 20, 2017 at 2:55 PM
    #11
    computeruser6

    computeruser6 Climate heretic

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    I wouldn't go over 35" tires without re-gearing.
     
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  12. Jun 20, 2017 at 4:08 PM
    #12
    Cement Pro

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    I ran Toyo 37's on my last truck and had 3:42's. It ran ok too and helped cut down on tire wear r/t spinning but then again it was a modified Cummins. You can get by with 37's and a stock 5.7 with 4:30's but 4:88 would be better and if you plan on 40's later you may as well go with 5:13's. I ran 33's on my supercharged Tundra and it was perfect as long as you didn't floor it from a standstill.
     
    JBSTOY likes this.
  13. Jun 20, 2017 at 4:18 PM
    #13
    1UPPER

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    Unfortunately they only make 4.88 gears for Tundra.
     
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  14. Jun 20, 2017 at 4:28 PM
    #14
    TXRailRoadBandit73

    TXRailRoadBandit73 RUNNIN' WITH THE DEVIL RÖCKIN' N RÖLLIN'

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  15. Jun 20, 2017 at 8:16 PM
    #15
    mixwells

    mixwells [OP] New Member

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    Thanks for input guys, how about those 35s?
     
  16. Jun 20, 2017 at 8:20 PM
    #16
    dirtydeeds

    dirtydeeds New Member Vendor

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    I would run 4.88 on 33's. Much less 35's or 37's.
     
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  17. Jun 21, 2017 at 9:37 AM
    #17
    Vector W8

    Vector W8 Old guy with a lot of expensive habits.

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    35.4" on mine with the SC, I do notice a difference from stock. But going to 4.88 would really put me up much higher than I want to run the RPM band down the highway with 35's

    20170326_140222_zpswlbhtaxq_3aecb691177bed43bedab7a8440806f74b227780.jpg

    20170326_140222_zpswlbhtaxq_3aecb691177bed43bedab7a8440806f74b227780.jpg
     
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  18. Jun 21, 2017 at 2:56 PM
    #18
    dirtydeeds

    dirtydeeds New Member Vendor

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    lower rpm causes a steeper throttle position. Steeper throttle position is sensed as more load by the ecu.

    In other words, you're better off with slightly higher rpm, that you are with slightly more throttle position.
     
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  19. Jun 30, 2017 at 11:36 AM
    #19
    Jsena

    Jsena Trend setter, not a follower!!

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    Anyone here running 37's , is the width typically 13.5????
     
  20. Jun 30, 2017 at 11:38 AM
    #20
    andy9743

    andy9743 New Member

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    12.5 on mine. wish they were wider but they rub already at a 0 offset up front.
     
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  21. Jul 1, 2017 at 12:29 PM
    #21
    osidepunker

    osidepunker OsidePunker

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    BFG has a 37x12.5 for 17" wheels. Not sure about other size wheels
     
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  22. Jul 1, 2017 at 12:30 PM
    #22
    osidepunker

    osidepunker OsidePunker

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    0 offset is hard to clear
     
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  23. Jul 1, 2017 at 12:51 PM
    #23
    1UPPER

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    37 typically come in 12.5" or 13.5" wide. I'm running 13.5" because my wheels are 12" wide with a -51 offset. I wanted the extra side wall protection since I'm running a 12" wide rim. What size rim are you thinking of running? What size lift are you looking at doing?
     
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  24. Jul 1, 2017 at 1:27 PM
    #24
    Jsena

    Jsena Trend setter, not a follower!!

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    22x10 -25
    7 inch BDS
     
  25. Jul 1, 2017 at 1:52 PM
    #25
    1UPPER

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    You can clear a 37". I'm running the same size lift with a bigger offset and wider rim. You may need to have your body mounts shaved and probably need to shave some of the inner fender to push the fender guards more forward. It's not a big deal but some people do not want to cut their stock body mounts. There are several companies who sell the body mount steel trim pcs. So you just need to cut the corner and weld the steel plate and then repaint it with a high gloss black. Here is a link to the plates for the body mounts.

    http://www.socalsupertrucks.com/2007-current-tundra-body-mount-plate-kit.aspx#.WVgLh7U8KEc
     
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  26. Jul 1, 2017 at 1:54 PM
    #26
    Jsena

    Jsena Trend setter, not a follower!!

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    Thanx a lot again.. do you have rub issues ?
     
  27. Jul 1, 2017 at 2:02 PM
    #27
    1UPPER

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    Before the body mount had been cut I did rub a little when I would reverse with the tires fully cranked. After having the body mounts trimmed I don't rub at all.
     
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  28. Jul 1, 2017 at 2:09 PM
    #28
    Jsena

    Jsena Trend setter, not a follower!!

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    Sweet... thanks a lot my friend :thumbsup::cheers:
     
  29. Jul 1, 2017 at 6:53 PM
    #29
    Otaku4life69

    Otaku4life69 Welcome to the Dark Side.

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    On the highway the transmission keeps going back and forth from 6th to 5th gear. It is really annoying. That's also a lot of wear on the trans over time. With tires over 35" changing gears is a must. My truck drives so much better with the 4.88s.
     
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  30. Jul 1, 2017 at 7:31 PM
    #30
    Jsena

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    Yea I'm getting it done.. 100% was just thinking about that Auburn.. do I need it ¯\_(ツ)_/¯
     

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