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People with Duratracs....MPG difference?

Discussion in 'Wheels & Tires' started by ItalynStylion, Oct 10, 2011.

  1. Oct 10, 2011 at 2:14 PM
    #1
    ItalynStylion

    ItalynStylion [OP] Sounds Gooooood

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    I've run a bunch of tanks through the truck since I bought the Duratracks and I can now say that I'm getting consistantly shitty gas mileage.

    Before I was getting roughly 19-20 and now I'm getting 17-18. Has anyone else noticed a significant drop?

    Not pissed, just curious. It has me considering getting an intake of some sort to help offset the difference.
     
  2. Oct 10, 2011 at 2:18 PM
    #2
    Trent

    Trent Well-Known Member

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    Did you go up in size when you got the Duratracs? That can throw off the odometer a bit and make it appear you are traveling fewer miles to a tank of gas.
     
  3. Oct 10, 2011 at 2:30 PM
    #3
    kcbmx

    kcbmx doing my thing.

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    i went from 265/75 toyo m/t to the 265/75 duratracs and millage stayed the same. never had stock tires so i cant really compare. 23.8 best tank 20.9 average
     
  4. Oct 10, 2011 at 2:34 PM
    #4
    ItalynStylion

    ItalynStylion [OP] Sounds Gooooood

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    That's a good point. I did go up in size. My speedometer used to read 3mph faster than I was actually going at around 70mph and now it's about dead on. I wonder if I'm really getting similar mileage as I was before with respect to the ground but the odometer thinks differently. I had the stock Bridgestone Duellers before.
     
  5. Oct 10, 2011 at 2:35 PM
    #5
    Konaborne

    Konaborne Pineapples on pizza Hawaiian does not it make.

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    the bigger tire+more aggressive pattern = worse mileage

    I went from 235/75/15 LTX AT2's to 265/65/16 KM2's and from 19 MPG avg to 15-17 avg
     
  6. Oct 10, 2011 at 2:39 PM
    #6
    Flagtown Taco

    Flagtown Taco Active Member

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    285/70-17R's here. Mileage dropped from the sticker average of 21/17 to about 18/15. But that's to be expected with the bigger size. Running side-by-side with a stock tacoma on a flat stretch of highway my odometer was 1/10 mile off and speedo was about 5 mph off above 55 and as much as 7 mph off above 75 mph.
     
  7. Oct 10, 2011 at 2:46 PM
    #7
    Trent

    Trent Well-Known Member

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    Did some math using the tire size calculator above. On my truck with the steelies, the stock tire is a 245/75-16. I'm looking at some Duratracs to replace my stock tires, but I like the aggressive look of the 265/75-16's. That equates to a -3.7% difference in revolutions per mile. That means, that if I were getting 20mpg before, I'm only going to get 19 and change now based on nothing but odometer inaccuracy.

    I think.

    I suck at math, so feel free to correct me if my figgerin' is off. :lol:
     
  8. Oct 10, 2011 at 2:48 PM
    #8
    NetMonkey

    NetMonkey Well-Known Member

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    if you went up in size on the tires, you have to add the mileage difference into your MPG calculation.
     
  9. Oct 10, 2011 at 8:02 PM
    #9
    toytaco970

    toytaco970 Well-Known Member

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    Sounds about right with the size and weight difference
     
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