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MPG experiment a success??

Discussion in '2nd Gen. Tacomas (2005-2015)' started by badguybuster, Feb 25, 2010.

  1. Feb 25, 2010 at 9:01 AM
    #1
    badguybuster

    badguybuster [OP] Well-Known Member

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    As most of you know I went up to a 3" lift and I am now running Firestone Destination A/T's 285/70/17 on 17x9 ATX "VICE" wheels. My mpg dropped from 315 miles per tank to about 250-255. I took a long road trip (all highway) this weekend and decided to experiment. On the way up I drove at whatever speeds I normally would (70-75mph) and got right at 265 miles (go-mart gas) before needing to fill up. On the way back I kept it between (60-65mph) and I made it the entire 318 miles without stopping for gas. Oh, the gas was Exxon regular. I was pretty impressed by the difference.
     
  2. Feb 25, 2010 at 9:36 AM
    #2
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    Are you using gps to count miles? If not your numbers will be wrong
     
  3. Feb 25, 2010 at 9:43 AM
    #3
    flightcancled

    flightcancled Addicted

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    Camper top with racks, Custom fogs behind lower bumper. Interior LED lighting, Rock Lights, Hella 500s with upraged bulbs behind black billet grill, AAL, Front 5100s
    Impressive. Do you think the lift or tires did more to kill the mpg?
     
  4. Feb 25, 2010 at 9:43 AM
    #4
    white91formula

    white91formula Well-Known Member

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    doesnt matter what hes using to count it, he had the same setup to and from so nothing is going to change, the difference between the two is still going to be the same
     
  5. Feb 25, 2010 at 9:50 AM
    #5
    novakills

    novakills Well-Known Member

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    I notice a huge difference in gallons per hour useage (instantaneous reading via my Scangauge) from 65 mph to 75 mph.
     
  6. Feb 25, 2010 at 9:58 AM
    #6
    Endurozw

    Endurozw War Damn Eagle!

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    Yeah I have noticed the same thing...I drive 7 hours to see my gf and the difference in gas mileage between 75 and 70 mph is very noticeable.
     
  7. Feb 25, 2010 at 10:02 AM
    #7
    PreRunner

    PreRunner Well-Known Member

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    yes when you're lighter on the pedal you use less gasoline. this concludes your experiment. thanks for participating.
     
  8. Feb 25, 2010 at 10:07 AM
    #8
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    Difference percent wise yes but I was talking about totals so others can compare. Different tire size will give different miles.
    and actually the most efficient speed is around 55 MPH after that air friction goes quickly up. So to make best mileage one has to stay under 55MPH .
     
  9. Feb 25, 2010 at 10:12 AM
    #9
    Joe in the hills

    Joe in the hills Well-Known Member

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    I'm completely stock and routinely get 20 MPG city & hwy combined, but make every attempt to keep the RPM's from exceeding 2K and operate at 1.5K. At 2K it pretty well limits me to max of 65 MPH.

    Driving 70 to 75 MPH on Interstate causes my MPG to drop.

     
  10. Feb 25, 2010 at 10:13 AM
    #10
    Tsenekos

    Tsenekos Well-Known Member

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    i notice a big difference when I drive 60mph I get close to what you got anything over 70mph and im down to 250 miles out of a tank but in the city its crap 250 miles and thats driving like a grampa
     
  11. Feb 25, 2010 at 10:14 AM
    #11
    novakills

    novakills Well-Known Member

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    most different cars/trucks have differing points at where the mpgs drop off drastically. the objective of my post, and hopefully the thread, is not to point out the obvious but rather display Tacoma owner's observance of at what point our efficiency drops off.

    if we are looking into the obvious then i guess our trucks get better mileage after a massive poop also LOL
     
  12. Feb 25, 2010 at 10:14 AM
    #12
    tarandus

    tarandus Well-Known Member

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    How do you get to 65mph and stay at 2K?? I'm at or below 60mph at 2K, no exceptions. Kinda sucks since we have lots of road driving here. Takes forever to get anywhere at those speeds.
     
  13. Feb 25, 2010 at 10:19 AM
    #13
    Joe in the hills

    Joe in the hills Well-Known Member

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    I do the 2K RPM's on the brief section of Interstate, as well as, 4 lanes that I have to travel daily go & coming from work.

    On the 2 lanes where I encounter hills I allow the speed to drop to maintain typically 1.5 RPM's and try an coast where feasible down hills w/o breaking. This works OK in rurual roads, but not so great in stop & go city driving w/ all the signal lights and bumper to bumper traffic conditions.
     
  14. Feb 25, 2010 at 10:24 AM
    #14
    1TUFFTRD

    1TUFFTRD WTF

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    I just drive the way i want and get shitty mpg... oh well its funner that way:D
     
  15. Feb 25, 2010 at 10:54 AM
    #15
    flatlander

    flatlander Well-Known Member

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    Fascinating. At 2k my speedo is in the 65-68 range.

    HTH
     
  16. Feb 25, 2010 at 10:56 AM
    #16
    tarandus

    tarandus Well-Known Member

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    My DCab is a 4.0L 6 speed manual 4x4 so we have different gearing.
     
  17. Feb 25, 2010 at 10:59 AM
    #17
    BlueT

    BlueT Well-Known Member

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    Speedo on our trucks is broken :D
    On stock tires it shows 5MPH faster then truck is going. So when speedo shows 65 you actually doing below 60MPH;)
     
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