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Bump Steer issues + SPC UCA Alignment

Discussion in 'Suspension' started by CoyoteCalling, Oct 13, 2020.

  1. Oct 13, 2020 at 9:51 AM
    #1
    CoyoteCalling

    CoyoteCalling [OP] Well-Known Member

    Joined:
    Jun 1, 2020
    Member:
    #330046
    Messages:
    51
    Gender:
    Male
    Vehicle:
    3rd Gen DCLB Silver
    Just got my 2020 DCLB TRD OR lifted and mounted up on new wheels and tires, and am having minor issues. Main problem is some bumpsteer/tracking issues, especially notable at lower speeds (5-20mph). Alignment numbers are below - the high caster seems to be in line with what most people on TW recommend. Any recs on getting this stamped out would be appreciated.

    Here's what I'm running:

    Toytec Aluma Boss 2.0 front Coilovers
    SPC UCA's
    Toytec Boss 2.2 rear shocks
    OME Dakar HD Leaf Pack
    Diff Drop
    Sway bar relocation kit
    NO shims, spacers, or drive/brakeline changes.

    Method 701 with Toyo Open Country AT 3 285/70/r17

    All other components stock.

    IMG_2300.jpg
     
  2. Oct 13, 2020 at 10:31 AM
    #2
    gotoman1969

    gotoman1969 Well-Known Member

    Joined:
    May 30, 2018
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    #254966
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    Steve
    San Antonio, TX United States
    Vehicle:
    2015 Silver Tacoma PreRunner
    3" ToyTec coilovers, JBA UCA's, Bilstein 5100's
    Imo. If you have after market ucas, I’d bump up caster to 3-3.5 personally.
     
  3. Oct 13, 2020 at 11:23 AM
    #3
    Island Cruiser

    Island Cruiser TVita

    Joined:
    May 20, 2012
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    #79166
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    Kauai
    Vehicle:
    Baja
    Have more caster added and check your tire pressure. I was getting annoying bump steer because the shop inflated my E-rated tires to 35psi, I dropped it down to just 32psi and it made a world of difference
     
  4. Oct 14, 2020 at 8:04 AM
    #4
    CoyoteCalling

    CoyoteCalling [OP] Well-Known Member

    Joined:
    Jun 1, 2020
    Member:
    #330046
    Messages:
    51
    Gender:
    Male
    Vehicle:
    3rd Gen DCLB Silver
    Appreciate the responses. Will get some more caster added! My LT rated tires are at 37 as of yesterday, so may play with that, too.
     
    Island Cruiser likes this.

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