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Want to move from 265/70r18 to 285/65r18...possible?

Discussion in 'Wheels & Tires' started by Priddle, Apr 1, 2013.

  1. Apr 1, 2013 at 8:37 AM
    #1
    Priddle

    Priddle [OP] And now for something completely different....

    Joined:
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    358
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    St. John's, NL Canada
    Vehicle:
    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
    I currently have XD Monsters, 18x9, +18 offset and 5.71 Backspace. Tires are General Grabber AT2 P265/70r18. I have Billies @ 2.5"

    I had to trim the front fender slightly and I was getting slight inner sidewall rubbing on the chassis. No rubbing on UCA. There was a 1/4" of space there. I added a 1/4" spacer plate and that solved the inner sidewall rubbing.

    I want to get BFG ATs. I had my mind made up to get 275/65r18 as they are pretty close in side to my Grabbers. I shouldn't have to do any more trimming. But deep down I want 285s. But I really think it would be a very tight fit. If I had those wheels in a -12 offset, I doubt I'd have any issues. I don't think my current rim will allow for a 285 comfortably. Based on my research, my Grabbers have a 282mm section width on a 9" rim. The 285 ATs would have a 297mm section width on a 9" rim. Thats a 15mm difference, or 7.5mm on either side, ie, 1/4". But I know math translated to real world application doesn't always jive.

    According to the manufacturers specs, my Grabbers are slightly taller than the BFG 285's. Its just hard to figure the difference in width on the rim.

    What do you guys think?
     
    Last edited: Apr 3, 2013
  2. Apr 1, 2013 at 8:52 AM
    #2
    Priddle

    Priddle [OP] And now for something completely different....

    Joined:
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    St. John's, NL Canada
    Vehicle:
    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
  3. Apr 1, 2013 at 9:05 AM
    #3
    evanmb31

    evanmb31 Well-Known Member

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    Satoshi'd grill. blacked out badges. aftermarket sound system. De-chromed and color matched. OME 885s + Dakars with 3rd leaf removed. LR UCAs. Scs stealth 6 with 285 duratracs. BAMF sliders
    You might rub on the UCAs at full lock with 285s and +18 offset. MIGHT, not sure on this, but most people recomend 0 to -12 offset for 285s
     
  4. Apr 1, 2013 at 9:17 AM
    #4
    BORNWILDGUY

    BORNWILDGUY Well-Known Member

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  5. Apr 1, 2013 at 5:29 PM
    #5
    Priddle

    Priddle [OP] And now for something completely different....

    Joined:
    Aug 20, 2010
    Member:
    #41982
    Messages:
    358
    Gender:
    Male
    St. John's, NL Canada
    Vehicle:
    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
  6. Apr 1, 2013 at 6:10 PM
    #6
    evanmb31

    evanmb31 Well-Known Member

    Joined:
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    connecticut
    Vehicle:
    09 trd off road
    Satoshi'd grill. blacked out badges. aftermarket sound system. De-chromed and color matched. OME 885s + Dakars with 3rd leaf removed. LR UCAs. Scs stealth 6 with 285 duratracs. BAMF sliders
    You might be alright. Every truck is different. I have 2.5" of lift and i rubbed like crazy with 285/70/17, needed cab mount chop for normal driving, cut the fender flares front and back and i still rub when offroading. I have wheels with -10mm offset though, and LR UCAs. I just think you might be close to the UCA
     
  7. Apr 2, 2013 at 2:58 PM
    #7
    Priddle

    Priddle [OP] And now for something completely different....

    Joined:
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    Messages:
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    St. John's, NL Canada
    Vehicle:
    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
    Your tire size is pretty much the same as the 285/65r18s. Same height as my current 265s. Given your LR UCAs, -10mm offset, it is hard to compare your setup to mine.

    I may have a local tire dealer on board to test-fit a 285 when he gets some in. I may do some pre-trimming beforehand. Wouldn't hurt anyway even if I go with 275s.
     
  8. Apr 3, 2013 at 4:17 PM
    #8
    Priddle

    Priddle [OP] And now for something completely different....

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    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
    Ok, so took one of my summer rims with a 265 out of the garage and put it on the truck with the sole purpose of measuring clearance. Only limitation was I couldn't check clearance during flexing.

    First, the section width of the tire is 11 5/8". I laid the wheel down on a flat surface, laid a long straight-edge across it and measured from the straight-edge to the surface.

    I chose the left front wheel to test. I also put the 1/4" spacer back on.

    The first picture is the clearance between the tire and the UCA, wheel pointing straight.
    The second is of the front inner fender where I had to do some minor trimming.
    The third is the wheel cut hard to the right. Not much clearance to the UCA.
    The fourth is wheel cut hard to left. Decent clearance to the UCA.
    The fifth picture is half turn to left, a nice gap between tire and mudflap.

    I really have reason to believe I can run BFG AT 285/65r18s. I hope to find out soon.

    20130403_195038.jpg
    20130403_195212.jpg
    20130403_195310.jpg
    20130403_195654.jpg
    20130403_195856.jpg
     
  9. Apr 3, 2013 at 4:22 PM
    #9
    evanmb31

    evanmb31 Well-Known Member

    Joined:
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    connecticut
    Vehicle:
    09 trd off road
    Satoshi'd grill. blacked out badges. aftermarket sound system. De-chromed and color matched. OME 885s + Dakars with 3rd leaf removed. LR UCAs. Scs stealth 6 with 285 duratracs. BAMF sliders
    Ganna be close! Remember that the sidewall is wider than the treads, and the 285 is taller than the 265s, so even though in theory you will only be 10mm closer to the UCA, the bulging part of the sidewall will be higher up closer to the UCA
     
  10. Apr 3, 2013 at 5:40 PM
    #10
    Priddle

    Priddle [OP] And now for something completely different....

    Joined:
    Aug 20, 2010
    Member:
    #41982
    Messages:
    358
    Gender:
    Male
    St. John's, NL Canada
    Vehicle:
    2007 Tacoma 4x4 SR5
    Current: Vent Visors, Running Borads, tint, Ride Rite airbags, front 5100's @ 2.5, Toytec Front diff drop
    According to the tire specs, the 265/70r Grabbers are a fraction of an inch taller than the BFG 285/65r. So it shouldn't add additional height.
     
  11. Apr 3, 2013 at 6:03 PM
    #11
    evanmb31

    evanmb31 Well-Known Member

    Joined:
    Jan 15, 2012
    Member:
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    Messages:
    7,269
    Gender:
    Male
    First Name:
    evan
    connecticut
    Vehicle:
    09 trd off road
    Satoshi'd grill. blacked out badges. aftermarket sound system. De-chromed and color matched. OME 885s + Dakars with 3rd leaf removed. LR UCAs. Scs stealth 6 with 285 duratracs. BAMF sliders
    I see, i forgot you had 265/70/18, not a very common size, at least here anyway.
     
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