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275/70R17 or 285/70R17?

Discussion in '5th Gen 4Runners (2010+)' started by P226Navy, Mar 5, 2019.

  1. Mar 5, 2019 at 7:56 AM
    #1
    P226Navy

    P226Navy [OP] 2016 T4R

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    I have a leveled 2016 4Runner and it’s time to upgrade my wheels. Torn between the 2 tire sizes. I have a leveled rig in Fox 2.0 Coilovers and Fox IFP at rear. If using 285, Do I need an inch spacer at Front and 2” spring at rear? With new UCA and drop kit? Or just do 2.5” front and 1.5” rear without doing new UCA. This is 90-95% daily. I’m just worried that it will rub extremely if I don’t do the 3”F and 2” at Rear.
     
  2. Mar 5, 2019 at 8:18 AM
    #2
    HoBoDanny

    HoBoDanny Dude...

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    Not sure on lift but the narrower tire will cause less rubbing so 275/70r17 that’s 32.16/10.13
     
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  3. Mar 5, 2019 at 9:38 AM
    #3
    nimby

    nimby New Member

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    The height of your lift isn't going to prevent you from rubbing.

    Rubbing has more to do with the backspacing of your wheels.

    Using stock backspacing, you can run both 275's and 285's with no lift and very minor to no rubbing.

    If you add wheel spacers, you are actually more likely to rub.

    Alignment is also important. Push your caster up as high as it will go within spec.
     
  4. Mar 5, 2019 at 8:00 PM
    #4
    P226Navy

    P226Navy [OP] 2016 T4R

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    Thanks man! I might just go 275/70R17 BFG KO2.
     
  5. Mar 6, 2019 at 12:13 PM
    #5
    nimby

    nimby New Member

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    You'll be fine with 275's (so long as you have stock wheel backspacing).

    In the rare instance that you do rub, it will be minor and will either be on the front part of your fender liner or on your mudflaps. Look up "fender liner mod" to see how to fix this. As for the mudflap, you can always remove it or trim it. All easy stuff.
     
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  6. Mar 6, 2019 at 12:55 PM
    #6
    Backslider

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    You can run 285 and it will look great, but you'll need to do some trimming. Honestly I don't think adding more height is going to do a lot to clear those tires.
    This is true.. I rubbed with 275s and a 3" lift because I have a -20 offset.

    If you can get UCAs and get your caster to +4 if is ideal.
     
    P226Navy [OP] and nimby like this.
  7. Mar 6, 2019 at 7:20 PM
    #7
    P226Navy

    P226Navy [OP] 2016 T4R

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    Thanks for the input brothers. I have 17X8.5 with 0 offset on my wheels. I don’t know if this will help. I’m not too familiar with the physics of the offset numbers. I appreciate all the input.
     
  8. Mar 6, 2019 at 7:21 PM
    #8
    P226Navy

    P226Navy [OP] 2016 T4R

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    Thanks bro. I have 17x8.5 wheels with 0 offset.
     
  9. Mar 6, 2019 at 7:55 PM
    #9
    aroyalsfan

    aroyalsfan New Member

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    Do the stock 5th gen rims that nobody can give away have a 15 offset? Will going from that to a 0 offset cause any issues?
     
  10. Mar 6, 2019 at 8:03 PM
    #10
    Backslider

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    I think you still may have some minor rubbing with a 0 offset, but not nearly as bad as a negative offset.
     
  11. Mar 6, 2019 at 8:11 PM
    #11
    P226Navy

    P226Navy [OP] 2016 T4R

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    Thanks bro! So I guess lifting won’t help with rubbing issues. I don’t know if there’s a big and noticeable difference of 275 and 285.
     
  12. Mar 7, 2019 at 5:15 AM
    #12
    Backslider

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    They are pretty close, but having 275s I can tell you I wish I had gone for the 285s up front.

    Check the spec and size sheets for the specific tires you are thinking of getting to get their exact sizes. For a general idea you can use upload_2019-3-7_6-15-42.jpg

    Post pics so we can all live vicariously through you..
     
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  13. Mar 7, 2019 at 6:50 AM
    #13
    P226Navy

    P226Navy [OP] 2016 T4R

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    Thanks man! I don’t want to be on that situation “I wish should’ve gone 285”. I appreciate you bro. This helped a lot.
     
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  14. Mar 7, 2019 at 6:50 AM
    #14
    wmdtech

    wmdtech New Member

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    I am wondering the same, TRD ORP with stock suspension. The truck has the gray "TRD PRO" wheels, and I cannot find the specifications in the manual for these wheels. Basically I'm trying to ball on a budget and am looking to size up tires (275/70) with the stock suspension and wheels. But at the same time trying to be some what intelligent in my decision and getting a size the will work with a lift in the future. Any foreseeable issues?

    Mike, thanks again for all the help. Been making my list of wants for when the boss allows!! :bowdown:
     
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  15. Mar 7, 2019 at 6:56 AM
    #15
    Backslider

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    There are some guys out there running 285 with stock suspension/no lift. You will need to trim the fender liner a bit, but it will work. As @nimby pointed out, the most important thing in the equation as far as whether you will rub or not is offset. Those stock TRD Pro wheels are a good choice if you're going to run 285 without a lift.

    Personally I wish I had gone 285, but found an amazing deal on the KO2 in 275.. I should have just gone all the way from the get go. You may feel differently about it tho..

    I think the TRD Pro wheels have a +4 offset, versus +15 with TRD OR and SR5 wheels.. If you do have to do some trimming or reshaping, it will be just the forward fender liner and the spats.
     
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  16. Mar 7, 2019 at 6:58 AM
    #16
    wmdtech

    wmdtech New Member

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    That's what I was wanting to hear. Like I said, trying to ball on a budget. The truck isn't even "mine" yet, the boss is still driving it until I trade the taco for a new one for her. Just planning a head at this point. Thanks man!
     
  17. Mar 7, 2019 at 7:35 AM
    #17
    P226Navy

    P226Navy [OP] 2016 T4R

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    I have a good deal with 285 BFG KO2 now in either C and E load. Installed and set of 4 for $790. I was going to get the 275 but they aren’t on promotion. $200-300 plus difference is huge.
     
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  18. Mar 7, 2019 at 7:39 AM
    #18
    Backslider

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    That is a good deal - 285 fits in the spare tire location if you wanted a full size spare!
     
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  19. Mar 7, 2019 at 7:42 AM
    #19
    P226Navy

    P226Navy [OP] 2016 T4R

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    Good to know Mike. I really appreciate your help bro. I spoke with someone and they said I can crank up and extra .5” on my Fox 2.0 Coilovers so total of 2.5” Front and I’ll do 1.5”Rear either spacers or spring. Then eventually I’ll add ICA Total Chaos even it’s not required or recommended.
     
  20. Mar 7, 2019 at 10:22 AM
    #20
    nimby

    nimby New Member

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    The only thing I'm not sure about with your particular set-up is the 8.5" wheel width. Stock wheel widths vary from 7" - 7.5". An 8.5" wheel could lead to some additional rubbing.......maybe on the UCA, in which case a new UCA would help. But I'm not certain about this. Maybe someone who has a better idea could comment.
     
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  21. Mar 7, 2019 at 11:53 AM
    #21
    jack bauer1

    jack bauer1 New Member

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    I have a Pro and with the stock wheels and Nitto RGs 285/70/17 with a 2.75 lift in front (Icon Cos) with SPC UCA. I do not rub and do not have BMC. And yes, I do wheel my 4Runner.
    If you do end up cranking the COs down to achieve 2.5 in the front I'd get UCAs.
     
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  22. Mar 7, 2019 at 12:05 PM
    #22
    P226Navy

    P226Navy [OP] 2016 T4R

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    What’s a BMC?
     
  23. Mar 7, 2019 at 12:11 PM
    #23
    Backslider

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    Body Mount Chop

    90% of people do have to do some trimming with this set up. Not BMC, but the fender liner and spats usually need to be trimmed.
     
  24. Mar 7, 2019 at 12:18 PM
    #24
    P226Navy

    P226Navy [OP] 2016 T4R

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    Got it! I might end up selling my set up now and will get TRD Pro wheels to avoid minimal rubbing. Thanks really for all the inputs.
     
  25. Mar 7, 2019 at 1:43 PM
    #25
    jack bauer1

    jack bauer1 New Member

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    I had to do zero trimming and still maintained my mud flaps.
    At one point I had Icon tubular UCAs and on the passenger side rubbed at full lock in reverse.
    Once I moved to SPC UCAs the adjustability was such that I was able to have the wheels pushed forward slightly to avoid any rubbing at all.
    I've never ran TC UCA's so I cannot comment on those.

    My advice is to go 285 tires (load C) with after market UCA's and crank it up to 2.5 in the front.
    If you go KO2 they run a little small so that may help you too.
    Should be a nice DD.
     
    Last edited: Mar 7, 2019
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  26. Mar 7, 2019 at 1:57 PM
    #26
    P226Navy

    P226Navy [OP] 2016 T4R

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    I heard about the SPC or Camburg UCA how great they are on 4Runner. Thanks man!
     
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  27. Mar 7, 2019 at 1:58 PM
    #27
    P226Navy

    P226Navy [OP] 2016 T4R

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    Did you lift yours?
     
  28. Mar 7, 2019 at 2:30 PM
    #28
    jack bauer1

    jack bauer1 New Member

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    IMG_1129.jpg
    Yes.
    I am 2.75 inches lifted in the front (Icon extended travel coil overs) and 2 inches (Icon springs) in the rear with Icon shocks.
    SPC UCA's, Nitto 285/70/17 RG Load C. IMG_1154.jpg



    If you are shooting for 2.5 inches of lift in the front you'd want to measure on level ground with the wheels straight from the center of the front hub to the lower fender lip and get a result of 22.5 inches.
     
    Last edited: Mar 7, 2019
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  29. Mar 7, 2019 at 3:01 PM
    #29
    P226Navy

    P226Navy [OP] 2016 T4R

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    I have 22 inches right now because it’s leveled. If I’ll go 2.5 I might do 1.5” rear. If 3” I’ll go 2” rear.
    Thanks man! That’s a sweet white 4R you have.
     
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  30. Mar 8, 2019 at 10:19 PM
    #30
    P226Navy

    P226Navy [OP] 2016 T4R

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    Can I use and put a 1” spacer in the Front in my Fox 2.0 Coilovers IFP so I can have a 3” total and would put 2” spacers at rear or spring just to have a 3/2” lift and a new TC UCA?
     

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