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Offset for 33” tires on 20x9’s ?

Discussion in 'Wheels & Tires' started by BigIrish82, Jun 29, 2020.

  1. Jun 29, 2020 at 9:04 PM
    #1
    BigIrish82

    BigIrish82 [OP] New Member

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    I have a 2018 Tundra and I’m putting on a rough country 3.5” lift. Gonna run 33x12.50 Nitto Trail M/T’s on 20x9 wheels. What the correct offset to have them sticking out about 2”? Also, will I need to trim at all?

    Thanks!!
     
  2. Jun 29, 2020 at 9:30 PM
    #2
    jwatt

    jwatt New Member

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    You could probably contact the lift manufacturer, and they could tell you the backspacing range your lift would allow. For my BDS lift the max backspacing for 12.5" wheels was 5 1/2" which is stated right on lift website. Also, if you have a Discount tire near by they can help. They helped out me a lot. They have a computer program that gives you a visual representation of what specific backspacing will look like compared to a stock wheel backspacing.
     
    Last edited: Jun 29, 2020
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  3. Jun 29, 2020 at 10:07 PM
    #3
    1lowlife

    1lowlife Toxic prick..

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    Put in what you have now, and figure out your 2".. Welcome to the forum..
     
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  4. Jun 30, 2020 at 5:07 AM
    #4
    Netmonkey

    Netmonkey Don't be a Dumbass

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    probably around 0 offset or maybe a little negative. yes, you will need to trim.

    This is a 3.5" lift with 295/60/20 tires on a 20x9 +20mm offset wheel. The tires stick out about 1 inch.

    [​IMG]
     
    Last edited: Jun 30, 2020 at 5:12 AM
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  5. Jun 30, 2020 at 5:19 AM
    #5
    BigIrish82

    BigIrish82 [OP] New Member

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    I’m okay with trimming some
    plastic. I like the look of your setup (at least what I can see of it lol). Thanks for the help!
     
  6. Jun 30, 2020 at 5:23 AM
    #6
    Netmonkey

    Netmonkey Don't be a Dumbass

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    thanks, you can check out my build thread. it shows the clearance and what trimming i did to fit the tires:
    https://www.tundras.com/threads/netmonkeys-build-thread-2-0.63758/

    you will probably need to do the cab mount chop and push the bumper forward as well as modifying the bumper liner.
     
  7. Jun 30, 2020 at 8:06 AM
    #7
    BigIrish82

    BigIrish82 [OP] New Member

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    Ok, so I’ve been rethinking 33’s. I don’t wanna do a CMC or move bumpers or anything like that. What is the largest tire I could put on 18x9 wheels with a 3.5” lift. Again, I don’t mind removing mud flaps and even a little bit of of plastic trimming. I still want a slight poke out of the fenders, but that’s optional at this point , not mandatory. Thanks for helping out here folks!
     
  8. Jun 30, 2020 at 8:58 AM
    #8
    Netmonkey

    Netmonkey Don't be a Dumbass

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    well... if you keep the offset higher, then you will have less trimming to do. look at my setup. if you stay with a +18mm to +25mm offset, then you can easily fit 34's and i am so close to be able to fit 35's. i would just need to trim a little bit more of the fender liner or push the bumper out 1/2".
     
  9. Jun 30, 2020 at 11:14 AM
    #9
    r4z0r51o

    r4z0r51o have fallen off the forum, but I’m still alive.

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    My older wheel and tire combo was 20x9 +20 with 295/60 (33.94”) and if I remember correctly I had to remove the mud flaps and maybe heat treat (reshape) the forward liner but I cleared the cab mount. Wasn’t until I added 1”wheel spacers that I started to hit the mount. This was with a 3/1 leveling kit.
     
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  10. Jun 30, 2020 at 11:18 AM
    #10
    BigIrish82

    BigIrish82 [OP] New Member

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    So did your old set up have the tires poking out at all?
     
  11. Jun 30, 2020 at 12:27 PM
    #11
    r4z0r51o

    r4z0r51o have fallen off the forum, but I’m still alive.

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  12. Jun 30, 2020 at 12:32 PM
    #12
    BigIrish82

    BigIrish82 [OP] New Member

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    Thank you. Nice ride btw. Your old setup is exactly what I am looking for. Not worried about trimming plastic and removing mud flaps, just don’t wanna start cutting the cab mount. Just confirming, the old setup is with a 3/1 lift kit? I have a 3.5”, so I imagine that should be enough, right? Thanks again for the pics and advice!
     
  13. Jun 30, 2020 at 12:35 PM
    #13
    r4z0r51o

    r4z0r51o have fallen off the forum, but I’m still alive.

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    Your quite welcome. Cutting the cab mount isn’t really a big deal, it’s when you start having to modify the pinch weld behind the plastics. Good luck!
     
  14. Jun 30, 2020 at 4:26 PM
    #14
    jwatt

    jwatt New Member

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    I went with 32's with my 7 " lift. With a 5.5 backspacing I only ended up having to remove front mud flaps. 35's would be major surgery.
     
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