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265/70R17 vs. 265/65R17 - Effect on MPG

Discussion in 'Wheels & Tires' started by JoeMX82, Feb 29, 2012.

  1. Feb 29, 2012 at 7:17 AM
    #1
    JoeMX82

    JoeMX82 [OP] Member

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    I am looking at going with the BFG Rugged Terrain as my truck is used on the highway only but I like the more aggressive look. My question is would the 70 series give me worse MPG due to being a bit heavier or would it be offset by the taller size and lower RPMs?
     
  2. Feb 29, 2012 at 7:23 AM
    #2
    NetMonkey

    NetMonkey Well-Known Member

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    Toytec Ultimate Lift @ 3", Mickey Thompson MTZ's 285/75/16, Moto Metal 955b, rear 2" ALL, Marlin Crawler sliders
    you wont notice that much difference in mpg
     
  3. Feb 29, 2012 at 11:26 AM
    #3
    Large

    Large Red

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    I ran the stockers for 1k miles & was getting 19-21 mpg constantly, switched to BFGs 265/70s & still getting about the same mileage but couldn't get back to 21 :( just hovered around 20.
     
  4. Feb 29, 2012 at 11:31 AM
    #4
    BARTRD

    BARTRD Well-Known Member

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    I have 265/70/17 and sit right at 20. Got 22.5 on a road trip to Florida running about 65-70 all the way. So you won't notice much difference if any
     
  5. Feb 29, 2012 at 11:49 AM
    #5
    Pugga

    Pugga Pasti-Dip Free Since 1983

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    With the 70 series, I noticed slightly better MPG's on the highway and no noted losses in town.
     
  6. Feb 29, 2012 at 4:39 PM
    #6
    ranger mac

    ranger mac Well-Known Member

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    go for the 70s you will appreciate the slightly more aggressive look from the 1.25" or so. Most won't recognize the difference, but you will.
     
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