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2019 4Runner TRD PRO - MPG thoughts

Discussion in '5th Gen 4Runners (2010+)' started by Gundelfinger, Dec 17, 2018.

  1. Apr 1, 2019 at 4:49 PM
    #91
    2fingers

    2fingers New Member

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    Weigh 55lbs each

    Getting mid 17’s mpg since upgraded from stock Bridgestone Dueler H/T
     
  2. Apr 1, 2019 at 9:16 PM
    #92
    WallyT4R

    WallyT4R New Member

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    It's better to use revolutions per mile of each tire. I don't think its much of a difference in your situation but that is assuming the computer is accurate and in the example I am guestimating the revs per mile.
    Have you compared the computer to hand calculation to see how accurate the computer is?
    So...you would need to get the revs per mile from the manufacturers as they vary from the averages below. ....here is the example

    275's= 627 revs per mile
    265's= 638 revs per mile

    So say you got 22 mpg you would take
    22 X 627 ÷ 638 = 21.62 mpg

    Kinda complicated but I think math is fun:D
     
    jgcaps likes this.
  3. Apr 2, 2019 at 5:16 AM
    #93
    wmdtech

    wmdtech New Member

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    If you think math is fun then you're a nerd :)
     
  4. Apr 2, 2019 at 5:27 AM
    #94
    HoBoDanny

    HoBoDanny Dude...

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    :duel:
     
  5. Apr 2, 2019 at 7:15 AM
    #95
    WallyT4R

    WallyT4R New Member

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    Doglover2003 likes this.
  6. Apr 2, 2019 at 3:09 PM
    #96
    Snickel Fritz

    Snickel Fritz New Member

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    How feasible is it to adjust the ECU for tire diameter on 5th gens these days, anyway? Dealer only?
     
  7. Apr 2, 2019 at 3:30 PM
    #97
    Crossfit4Runner

    Crossfit4Runner New Member

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    I know the little green eco light is annoying. I had turned mine off before I installed my 3” lift and 285’s then the whole MPG conversation started. I will say for the last 3 months or so I’ve made a concentrated effort to drive in a way to keep it on. I’ve noted that I have improved my MPG so it does make a difference.
    Yes I just used the readings in the car.
     
    jgcaps likes this.
  8. Apr 2, 2019 at 3:38 PM
    #98
    nimby

    nimby New Member

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    How big are your tires?

    I've heard some people suggest stock tire diameter on the 4Runner is a bit too small to begin with and as a result, we are getting slightly inaccurate speedo/mileage readings. They suggest 285's fixes that and back their claims up with GPS data when compared to speedo and mileage data.

    I haven't drilled down into that data or tested it myself, so this is just hearsay.
     
    Last edited: Apr 2, 2019
  9. Apr 2, 2019 at 4:20 PM
    #99
    Snickel Fritz

    Snickel Fritz New Member

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    I'm currently stock (~31.5") but will soon (hopefully tomorrow!) be on 255/75/17 and new wheels, putting me at ~32.1" which I expect to correct the ECU calcs as you mentioned. However, at some point in the future I'd like to experiment with a smaller tire in the 30" area, and that would require an *accurate* ECU update since I'd be going in the opposite direction, exacerbating the existing issue. If it's easy, cheap, or DIY-able I have more freedom to fool around with zany shit like this for everyone else's amusement! :rasta:
     
    jgcaps, WallyT4R and nimby like this.
  10. Apr 3, 2019 at 3:55 AM
    #100
    Ozzy52

    Ozzy52 New Member

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    when deciding to purchase the 4 runner is fuel economy the number 1 concern for everyone? or not really especially with EV's in the market. The reason i am asking is that i am in the market to purchase a new vehicle, and with fuel prices somewhat going up i don't want to make that mistake that i am left driving a vehicle that know will want in lets say 10 years from now, so if anyone can shed some light with the situation i am in that would be great..... thanx
     
  11. Apr 3, 2019 at 4:14 AM
    #101
    DGP1961

    DGP1961 New Member

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    Nobody can really answer that question for you for I feel just in my humble opinion 10 people will answer it 8 different ways. In a nutshell (again my opinion) for most folks buying a 4R or any decent size SUV/pickup gas is not the number 1 concern. Do I like it going up and specially peaking in the summertime of course not. Personally I'm not ready to make the leap into an electric or even a hybrid vehicle, again a personal choice. If you have concerns about gas and legitimate concerns they are look at 4 cylinders if you go with a gas model. Nowadays their pretty peppy and pretty darn good on gas also.
     
  12. Apr 3, 2019 at 6:06 AM
    #102
    WallyT4R

    WallyT4R New Member

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    No one can predict the future... However, I do believe EV's are the future but currently are just not completely ready yet IMO and are more expensive all in to own than an equivalent ICE vehicle. An you don't buy a 4Runner if your concern is fuel economy, just saying.
     
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  13. Apr 3, 2019 at 1:27 PM
    #103
    Omicron6

    Omicron6 New Member

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    Agreed, don't buy a 4Runner or any SUV/Truck thinking you'll get great fuel economy. It just won't happen. My (and probably many others) list of priorities was, what can I do with this vs other vehicles. Do I like the aesthetics of the vehicle. Do I think I'll be happy with this for the next 5+ years. Can I resell at a price I'd be happy with if I decide I don't want this anymore.

    My 4Runner replaced a Turbo'd Mini Cooper (which replaced a Yukon Denali, yeah big V8 and big tank....talk about gas/money pit), so I already made peace with the dramatic drop in MPGs. Overall we're much more satisfied with going back to an SUV. It just fits our life much better than the Mini did.
     
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  14. Apr 9, 2019 at 8:21 PM
    #104
    2fingers

    2fingers New Member

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    Did the trip to and from daughters college Saturday evening. It’s about 2 hours interstate each way. Reset the computer just after getting onto the interstate it measured 19.4 mpg round trip. Was satisfied with that. Overall feel like I dropped 2 mpg going to the heavier tires.
     
  15. Apr 10, 2019 at 4:45 AM
    #105
    Crossfit4Runner

    Crossfit4Runner New Member

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    Yep I lost mpg from that and from the lift.
     
  16. Apr 10, 2019 at 7:48 AM
    #106
    WallyT4R

    WallyT4R New Member

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    Time to re-gear :thumbsup:
     

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