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Question for the math people

Discussion in 'Wheels & Tires' started by Toy4Life, Apr 28, 2008.

  1. Apr 28, 2008 at 5:27 PM
    #1
    Toy4Life

    Toy4Life [OP] 668: The Neighbor of the Beast

    Joined:
    Aug 29, 2007
    Member:
    #2566
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    First Name:
    Chad
    Slippery Rock, PA
    Vehicle:
    96 Subaru Outback 2.2 5mt
    92 4Runner SR5 3.0v6 4x4(sold) 02 Tacoma SR5 TRD Offroad 4x4 (sold)
    In an attempt to figure out my fuel economy with 33" tires, I've come up with an equation, but wanted to know if I'm close or way off. The numbers seem right, but I figured some of you math people could check my work.

    [262.9 (miles shown) x 8.11 (% speedometer too slow)] + 262.9 = actual miles driven
    so:
    (262.9 x .0811) + 262.9 = 284.2

    284.2m/15.004g = 18.94 mi per gallon

    BTW, I used some info from this tire calculator based on comparisons of stock size (265/70/16) Vs. current size (33/10.5/15)http://www.1010tires.com/TireSizeCalculator.asp?action=submit
     
  2. Apr 28, 2008 at 5:39 PM
    #2
    rick

    rick `

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    Mar 1, 2007
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    or you could get a gps. according to my gps which i believe is pretty damn accurate. for every 100 miles driven (gps) my odometer registers only about 90.5 miles
     
  3. Apr 28, 2008 at 5:44 PM
    #3
    Toy4Life

    Toy4Life [OP] 668: The Neighbor of the Beast

    Joined:
    Aug 29, 2007
    Member:
    #2566
    Messages:
    4,970
    Gender:
    Male
    First Name:
    Chad
    Slippery Rock, PA
    Vehicle:
    96 Subaru Outback 2.2 5mt
    92 4Runner SR5 3.0v6 4x4(sold) 02 Tacoma SR5 TRD Offroad 4x4 (sold)
    Unfortuanately I don't have a GPS, nor can I afford one. I must resort to good old fashion brain power. I'm sure there's a formula for this, I'm just not sure if I'm using the right numbers.
     
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