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3rd Gen Half Shafts and Bigger Tires than Stock

Discussion in '3rd Gen. Tacomas (2016-2023)' started by 1stTacoDre, Jan 10, 2022.

  1. Jan 10, 2022 at 5:36 PM
    #1
    1stTacoDre

    1stTacoDre [OP] Member

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    Good day everyone,

    I’ve been looking around for discussions on half shafts and upgraded tire size but haven’t had much luck. What I am trying to figure out is how does in increasing tire size affect the half shaft. I assume there is always strain no matter the tire but what’s the difference in strain between a roughly 26-30lb tire, 30-45lb and a 45-60lb tire. If anyone has links to discussions or diagrams, that would be excellent.
     
  2. Jan 10, 2022 at 6:20 PM
    #2
    eurowner

    eurowner Duke Sky

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    The heavier the wheel, the more stress the wheel bearings will have. Especially with wheels with massive negative offset.
     
  3. Jan 10, 2022 at 6:45 PM
    #3
    1stTacoDre

    1stTacoDre [OP] Member

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    I would assume so just wondering if tacomas half shafts are suitable for rotating 50lb”ers at high rpm or if they technically only will support a certain weight capacity without overloading the strain meter and eventually reducing its life or breaking. It is a mid size truck and 35s are technically for tundras which I believe have thicker half shafts but could be wrong.
     
  4. Jan 10, 2022 at 6:53 PM
    #4
    3JOH22A

    3JOH22A トヨタ純正男娼

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    You're talking CV axles? OEM CV axles have been OK with tires up to 35", all else being equal. Adding a front locker is said to greatly increase the likelihood of the CV axles breaking.

    Upgraded CV axles with 300M alloy shafts are available, but they're expensive:
    https://jdfabrication.com/collections/gen-3-tacoma-16-6-lug/products/tacoma-05-18-4-long-travel-kit
    https://www.4wheelparts.com//p/rcv-axles-ultimate-ifs-cv-axle-set-cvjifs-toy2/_/R-RCVAX-CVJIFS-TOY2
     
  5. Jan 10, 2022 at 7:11 PM
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    hiPSI

    hiPSI Laminar Flow

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    You haven't found discussions because the strength of the front axle is okay. It's the bearings and CV joints that will have a reduced life. How much and how long are totally dependent on what you are doing and what the surface is you are on. Slick Rock will break things dirt and regular rock won't.

    Remember, a stock Tacoma is designed for maximum life. If you "upgrade" for specific conditions (big tires, wheels) you will reduce the life. How much? Your call, but generally speaking, you pay to play.
     
  6. Jan 10, 2022 at 7:14 PM
    #6
    Montana_Actual

    Montana_Actual ;)

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    hiPSI[QUOTED] likes this.
  7. Jan 10, 2022 at 7:16 PM
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    Stocklocker

    Stocklocker Well-Known Member

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    I agree on the negative offset, but the bearings carry the weight of the truck, not the weight of the wheel, so it should make no difference. If anything, the bearing turns slower with larger tires, so should last longer, if all else is equal.
     
    1stTacoDre[OP] and hiPSI like this.
  8. Jan 11, 2022 at 9:21 PM
    #8
    1stTacoDre

    1stTacoDre [OP] Member

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    Dope info ! Thanks guys that’s exactly what I was asking for.
     

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