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Tire width vs wheel width question

Discussion in 'Wheels & Tires' started by Thatbassguy, Apr 11, 2019.

  1. Apr 11, 2019 at 4:47 PM
    #1
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    I recently ordered 17×9" pro comp 05's for my 4runner. I am planning on having my 265/70/17 KO2's mounted on them.

    I just noticed that bfgoodrich recommends a maximum 8.5" rim with with that size. Discounttire.com recommends up to a 9" rim width.

    Should I be worried about this? I tend to air down on trails. In my Tacoma, i never went below 15 PSI. But, I'm thinking of hitting some more trails this year, and might consider going down to 12 or maybe 10, depending on the situation.

    Anyone else running this tire size on this wheel width?

    Should I be concerned about breaking a bead?

    I don't intend to do any rock-crawling. Just mud, sand, gravel, and small rocks.

    Thoughts?
     
    Strandskov likes this.
  2. Apr 11, 2019 at 6:16 PM
    #2
    SlvrSlug

    SlvrSlug New Member

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    If they were not black i would trade you straight up for these.D4540487-6FEE-41C4-AEC7-8B1C5353E633.jpg
     
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  3. Apr 11, 2019 at 6:20 PM
    #3
    HoBoDanny

    HoBoDanny Dude...

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    RCI Skid Plate CBI Ditch Light Brackets Hankook DynaPro ATM RF10 265 70R17 113T Tires 1.25” Wheel Spacers TPMS Bypass Mod Hydrocarbon Filter Removed Merca decal 2” leveling kit front only Black headlights
    You’ll be fine. Nothing to worry about KO2s have heavy sidewalls as well so no worries
     
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  4. Apr 11, 2019 at 6:27 PM
    #4
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    Thank you! I have been reading a lot about tires and airing down, ETC. It seems that wider rims are more likely to have the tires come off the bead than narrow rims.

    I could change my order, but prefer not to.

    It seems like the hard core guys will go down to 7-8 PSI without beadlocks.

    Any recommendation of a minimum air pressure to run with this setup? Assuming I'm not rock crawling..
     
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  5. Apr 11, 2019 at 6:32 PM
    #5
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    Those are the wheels I originally wanted! After shopping around, I'm pretty happy with my choice.

    Nice sliders, BTW!

    Also, those tires look badass! How are they on the road?

    20190309_120547.jpg
     
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  6. Apr 11, 2019 at 6:34 PM
    #6
    HoBoDanny

    HoBoDanny Dude...

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    If your not doing crazy stuff just stick with 20 shouldn’t need any less than that for casual off-roading. You are a bit wider than I would run with that tire but unless your going nutts it’s not gonna be an issue. If it is bring brake cleaner and a lighter to reset the bead on the trail.
     
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  7. Apr 11, 2019 at 6:37 PM
    #7
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    Thanks. I'm not even sure how these tires will respond to airing down, so I'll start around there.

    I have a place that I go with deep , loose sand. That's the situation I'm most likely to air down further
     
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  8. Apr 11, 2019 at 6:44 PM
    #8
    SlvrSlug

    SlvrSlug New Member

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    The tires are Falken Wildpeak M/Ts 285/70/17, i think they sing sing Hotel California on the freeway.:turtleride:
     
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  9. Apr 11, 2019 at 6:48 PM
    #9
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    Haha! I'm asking because the other option is to just sit on the wheels until I can stick 285's on them.

    If I go that route, I'll probably go with M/T's. I'll be looking for something that doesn't totally suck on the road, I.E. road noise, shitty ride, ETC
     
  10. Apr 15, 2019 at 10:25 AM
    #10
    powerwagon896

    powerwagon896 New Member

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    All other things being equal, wider rim width needs more air pressure to maintain flat tread contact. (prevent outer edge wear pattern) Narrower rims need less air pressure for the same flat contact. (prevent center tread wear pattern)
     
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  11. Apr 15, 2019 at 3:15 PM
    #11
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    Thank you for the input! I hadn't considered the treadwear changing. I might have to buy some sidewalk chalk:cool:

    The wheels are being installed at the moment! Woohoo!

    :woot:
     
  12. Apr 15, 2019 at 3:31 PM
    #12
    powerwagon896

    powerwagon896 New Member

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    I would just keep the pressure a couple of # under max and watch the tread wear.
     
  13. Apr 15, 2019 at 4:03 PM
    #13
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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    IDK. Max is 50 PSI. That's way too high for this truck. I don't even like running 38.
     
  14. Apr 15, 2019 at 5:07 PM
    #14
    Thatbassguy

    Thatbassguy [OP] New member? Really??

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