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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:
    59
    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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    First Name:
    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:
    59
    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.
     

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