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Starting to question safety...

Discussion in '2nd Gen. Tacomas (2005-2015)' started by dave91, Apr 28, 2015.

  1. Apr 28, 2015 at 3:32 PM
    #1
    dave91

    dave91 [OP] Well-Known Member

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    I have a 2007 tacoma with a 3" lift and just recently put on my summer tires which are 275/65r16. Since i switched my tires, i find that every bump i hit, my truck swerves a lot. The worst is when on the highway. i'm now avoiding going beside 18wheelers because if they're beside me when i hit a bump, i might hit them.
    Is this something i need to learn to put up with because of bigger tires??
     
  2. Apr 28, 2015 at 3:50 PM
    #2
    Steves104x4

    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Sounds like it's time for new shocks and maybe some front end work, too.
     
  3. Apr 28, 2015 at 3:50 PM
    #3
    nd4spdbh

    nd4spdbh Well-Known Member

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    the extra width will tend to grab more imperfections in the road.

    But with the proper amount of caster you should be good to track straight.
     
  4. Apr 28, 2015 at 3:55 PM
    #4
    deeezy

    deeezy Well-Known Member

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    Do you have aftermarket upper control arms on? If you don't then I think that's the reason for the wandering. Your caster must be very low.
     
  5. Apr 28, 2015 at 4:04 PM
    #5
    DVexile

    DVexile Exiled to the East

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    Definitely. +1

    Unless they are LT tires, in which case the pressure should be significantly higher than the stock P tire pressure. Between 40 and 45 psi for a LT tire around that size (the Baja/Pro actually list 46 psi on the placard for their LT tires).
     
  6. Apr 28, 2015 at 4:05 PM
    #6
    ODNAREM

    ODNAREM MEMBER Of The Church Of @ODNAREM

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    Could be more than a few things.Alignment,tire pressure,tire width,shocks,UCA's.
     
  7. Apr 28, 2015 at 4:50 PM
    #7
    dave91

    dave91 [OP] Well-Known Member

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    they are LT and they were put at 60 psi.
    Before being at 60, they were around 25 and it was as bad.
     
  8. Apr 28, 2015 at 4:53 PM
    #8
    dave91

    dave91 [OP] Well-Known Member

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    i'm actually not even sure. i got it with the lift so not sure what previous owner did to it...
    I wasnt swerving with smaller tires, is it only with bigger tires that i need to worry about the upper control arms?
    Can anything bad happen...?
     
  9. Apr 28, 2015 at 4:59 PM
    #9
    DVexile

    DVexile Exiled to the East

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    OK, well 60 is definitely too much. (And yes 25 way, way too low for an LT on road) An over inflated tire will in fact cause you to wander all over the road - essentially the wheel bounces too much so you are losing traction all the time. Since you are losing traction after bumps that matches up well with the cause being tire over inflation. So that could be part of your problem if not all of your problem.

    Again, for an LT tire around that size you should be around 45 PSI. Manufacturer specifies 46 PSI for an LT tire of about that size, for both front and rear.

    As others said alignment can play a big role too, but for starters lower the tire pressure to the manufacturer's specification and see how it behaves.
     
  10. Apr 28, 2015 at 5:02 PM
    #10
    dave91

    dave91 [OP] Well-Known Member

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    Great! thanks for your help!
    Sorry for my ignorance but is there any way to tell is my UCA's are stock?
     
  11. Apr 28, 2015 at 5:03 PM
    #11
    T4RFTMFW

    T4RFTMFW Well-Known Member

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    You can post a photo.
     
  12. Apr 28, 2015 at 5:09 PM
    #12
    Rotnik

    Rotnik Well-Known Member

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    If you can't tell throw a picture up....you'll be surprised how fast one of these guys will answer your question for ya
     
  13. Apr 28, 2015 at 5:12 PM
    #13
    MGtaco2.7

    MGtaco2.7 MEMBER

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    Also, have you re-torqued your lugs?
     
  14. Apr 28, 2015 at 5:15 PM
    #14
    dave91

    dave91 [OP] Well-Known Member

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  15. Apr 28, 2015 at 5:17 PM
    #15
    Pigpen

    Pigpen My truck is never clean

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    My truck does the same thing when I have my aftermarket wheels (with backspace) on - same size tires, just wider stance and it tries to wander constantly. I'm lifted on stock UCAs, so I'm caster-impaired. No wander on stock wheels.
     
  16. Apr 28, 2015 at 5:18 PM
    #16
    Pigpen

    Pigpen My truck is never clean

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    Those are stock
     
  17. Apr 28, 2015 at 5:20 PM
    #17
    dave91

    dave91 [OP] Well-Known Member

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    so what are my options?
    is it a bad thing?
     
  18. Apr 28, 2015 at 5:32 PM
    #18
    DVexile

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    Well the options I think come down to:

    - Install aftermarket UCAs. Head over to the suspension section for lots of posts to search regarding that.
    - Adjust the lift down to 2" instead of 3" which will get you in better alignment range for the stock UCAs.
    - Live with the current setup after driving with tires at proper inflation.

    In general 2" of lift is worry free. At 3" of lift a lot of little things start to add up to potential problems (poor alignment, CV boots rubbing and wearing through, driver side bearing vibrating). Plenty of people run 3" with stock stuff and don't have significant issues, but many people also run into a lot of issues and start having to swap out components.
     
  19. Apr 28, 2015 at 5:33 PM
    #19
    Bman4X5

    Bman4X5 There is no substitute for square inches.

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    Take it in for an alignment. If they can't get the caster higher than 2.2 or so, you probably need after market UCAs. Light Racing UCAs are affordable.
     
  20. Apr 28, 2015 at 5:33 PM
    #20
    Pigpen

    Pigpen My truck is never clean

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    Your best option is to put on UCAs. Maybe get someone's stock take offs from craigslist to see if that makes a difference. You live where there's winter, so running 2 sets isn't a bad idea anyway.

    First things first, though. get your tire pressure to around 40 and see how much that helps. Both 25 and 60 are going to cause wander for opposite reasons. I'd get the lift down to 2.5 or lower if you don't do UCAs
     

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