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Tire Sizing Question

Discussion in 'Wheels & Tires' started by badguybuster, Mar 16, 2009.

  1. Mar 16, 2009 at 4:52 PM
    #1
    badguybuster

    badguybuster [OP] Well-Known Member

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    Michael
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    My truck is running 265/65/R17 currently BUT I found a BAD ASS set of Goodrich A/T tires that are 255/75/R17. How would they affect my truck?????
     
  2. Mar 16, 2009 at 5:18 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
    Tenoe, AZ
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    4.10 gears, sliders, and lots of buttons.
    Current TireNew TireDifferenceDiameter inches (mm)
    30.56 (776.3)32.06 (814.3)1.5 (38) 4.9%
    Width inches (mm)
    10.43 (265)10.04 (255)-0.39 (-10) -3.7%
    Circumference inches (mm)
    96.02 (2438.82)100.72 (2558.2)4.7 (119.38) 4.9%
    Sidewall Height inches (mm)
    6.78 (172.25)7.53 (191.25)0.75 (19) 11.1%
    Revolutions per mile (km)
    659.89 (409.79)629.09 (390.67)-30.8 (-19.12) -4.7%
     
  3. Mar 17, 2009 at 5:15 PM
    #3
    badguybuster

    badguybuster [OP] Well-Known Member

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    So, ummm, how would that affect my truck??
     
  4. Mar 17, 2009 at 5:48 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Well, it might rub, and the OD will be off 4.9%
     
  5. Mar 17, 2009 at 5:49 PM
    #5
    badguybuster

    badguybuster [OP] Well-Known Member

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    Oh, well, crap. I am having one helluva time finding a L/T tire in my 265/65/17.
     
  6. Mar 17, 2009 at 5:52 PM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Try it out. If it rubs, either trim a little but, or get a small lift.
     
  7. Mar 17, 2009 at 6:01 PM
    #7
    badguybuster

    badguybuster [OP] Well-Known Member

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    I worry about the speedometer difference. I have a lift but it isn't installed yet. Thanks for the help.
     
  8. Mar 17, 2009 at 6:15 PM
    #8
    jhodge83

    jhodge83 They all float down here... Moderator

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    LT 255/75/17's will fit stock w/ no issues....i ran them on my 09 for about a week before the lift and had no rubbing at full lock to either side...did make the speedo read correct and it made the ODO read slightly slower...EXTENDED WARRANTY!!
     
  9. Mar 17, 2009 at 6:18 PM
    #9
    badguybuster

    badguybuster [OP] Well-Known Member

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    New truck....so nothing yet
    Well, it is weird. Everywhere I look, I see tons of the 265/65/R16 but I can not find a GOOD light truck tire in 265/65/R17. I went to Expert tire, Wholesale tire, Appalachian tire, and a couple others. Most tell me that it is near impossible to find above a 4 ply in that size. I tow a lot so I need at least a 6 ply. I mean the 255/75/R17 is only 1/2" difference, right??
     
  10. Mar 17, 2009 at 6:19 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    1.5" diff.
     
  11. Mar 17, 2009 at 6:26 PM
    #11
    jhodge83

    jhodge83 They all float down here... Moderator

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    u can get an LT in a 265/70/17 which is a little shorter than the 255/75/17....but the 255/75/17 is a full 32" where the stock 265/65 is a 30.5 i think
     
  12. Mar 17, 2009 at 7:45 PM
    #12
    flatlander

    flatlander Well-Known Member

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    When changing tires sizes, can't the ECM or whatever be re-programmed to reflect the new tire size?
     
  13. Mar 18, 2009 at 9:22 AM
    #13
    TacoBow

    TacoBow Intentionally cosmetically incorrect.

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