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What’s your MPG and tire size??

Discussion in 'Wheels & Tires' started by TundraLLama, May 29, 2021.

  1. Jun 2, 2021 at 8:25 PM
    #61
    Redcon41318

    Redcon41318 New Member

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    Stock 255/70/18, highway 17-18mpgs, streets anywhere from 10-13mpgs.
     
    TundraTeddy likes this.
  2. Jun 2, 2021 at 10:59 PM
    #62
    jwatt

    jwatt I heart men

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    Oregon
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    Salsa Red 2007 Tundra DC @91k.
    7" BDS Coilover Suspension Lift/BDS UCAs/XB LED Headlights/Nitto trail Grappler tires on Black Rhyno Armory wheels
    ^^This^^
     
  3. Jun 7, 2021 at 6:57 AM
    #63
    rt_tundra_co

    rt_tundra_co I'll get tired of tweaking this truck...never

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    Magnaflow cat-back exhaust Leer Topper, color matched to truck Thule Aeroblade roof rack on topper FABTECH 4” Suspension Lift Decked Storage, 2 drawer SPYDER LED headlights and taillights kits Hertz HDP5 5 Channel Class D Amplifier 2 x 10” subwoofer boxed behind rear seat Door speaker upgrades by Elite Auto Sound Colorado Springs Lock’er Down EXxtreme Console Safe LD2043EX Lock’er Down rear seat 3 x safes Lock’er Down gun magnet 80 LED in-grill light bar Baja Designs LED ditch lights TRD Pro grill Rotiform SIX-OR 20x9 wheels 35x12.5R20 Toyota Open Country R/T tires TheSource sPOD power control hub with in-cab installed accessory switches Firestone Ride Rite air suspension system with Air Command remote, on board compressor and rear bumper air port SDHQ rock sliders
    Alright, check my logic here... It would make the computer calculate to the low MPG side of reality, right? Since I've clocked mine at about a 7% decrease in MPH from reality. I could be completely inverted on my logic as well!
     
  4. Jun 7, 2021 at 9:52 AM
    #64
    Stumpjumper

    Stumpjumper New Member

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    Your decrease in MPGs as a % should = the increase in diameter as a %. So if your MPGs are now 15 and you increased diameter by 5% your actual MPGs would be 5% higher or 15.75
     
    frichco228 likes this.
  5. Jun 7, 2021 at 9:56 AM
    #65
    Elduder

    Elduder New Member

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    Currently lifted 2" with 315s that weigh 98lbs, average to work, which is a 20 mile trip is 13.4. Calculated for the tire size change comes out to 14.2. Stock I was getting 15, so just about 1 mpg loss. Made a trip down to central Oregon last week on the 35s and managed 16.8 which calculated out to 17.8mpg. Driving style has a lot to do with outcome. I use cruise often and typically set it 60 or 65 to match the speed limit. If I drive 70 or more there is a considerable change in fuel economy.
     
    frichco228 likes this.
  6. Jun 7, 2021 at 7:30 PM
    #66
    AtomicToyo

    AtomicToyo New Member

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    35x12.5, 3 inch lift. Average 16L/100kms which is around 14.5mpg.

    just a reminder if you put on bigger tires and are using the on board calculator without using a speedometer corrector then your mpgs are going to be way off (on the low side)… I was showing 12mpg before the fix.
     
  7. Jun 7, 2021 at 10:24 PM
    #67
    PLC721

    PLC721 New Member

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    Chandler, AZ
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    2018 Ram 2500 Cummins Laramie
    IG: PLC721
    285/65r20 Michelin Agiles
    18.8 avg mpg 70/30 City/Highway with some light weekend towing in there too.


    Sorry I know it's irrelevant :p
     
    TundraLLama [OP] likes this.
  8. Jun 7, 2021 at 11:07 PM
    #68
    hhenry_

    hhenry_ New Member

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    Been towing a lot the last few days and my mpg shows 9.8 now
     
  9. Jun 8, 2021 at 6:44 AM
    #69
    rt_tundra_co

    rt_tundra_co I'll get tired of tweaking this truck...never

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    Magnaflow cat-back exhaust Leer Topper, color matched to truck Thule Aeroblade roof rack on topper FABTECH 4” Suspension Lift Decked Storage, 2 drawer SPYDER LED headlights and taillights kits Hertz HDP5 5 Channel Class D Amplifier 2 x 10” subwoofer boxed behind rear seat Door speaker upgrades by Elite Auto Sound Colorado Springs Lock’er Down EXxtreme Console Safe LD2043EX Lock’er Down rear seat 3 x safes Lock’er Down gun magnet 80 LED in-grill light bar Baja Designs LED ditch lights TRD Pro grill Rotiform SIX-OR 20x9 wheels 35x12.5R20 Toyota Open Country R/T tires TheSource sPOD power control hub with in-cab installed accessory switches Firestone Ride Rite air suspension system with Air Command remote, on board compressor and rear bumper air port SDHQ rock sliders
    How did you correct your speedo? Was it a hardware or software fix?
     
  10. Jun 8, 2021 at 10:36 AM
    #70
    Stumpjumper

    Stumpjumper New Member

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    It is a software fix these days
     
  11. Jun 8, 2021 at 2:02 PM
    #71
    AtomicToyo

    AtomicToyo New Member

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    I used a rough country speedometer calibrator. Program it to your new tires and it plugs inline to the instrument cluster.

    that’s a software fix. You can unplug it and go back to oem. Lots of guys use it
     
  12. Jun 8, 2021 at 5:21 PM
    #72
    parkerbows

    parkerbows New Member

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    yeah i don't get it. not sure what I am doing wrong
     
    TundraLLama [OP] likes this.
  13. Jun 8, 2021 at 5:44 PM
    #73
    B.Ross

    B.Ross New Member

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    37's, 6" lift, stock gears. 11.3-12.5mpg. 13mph with a tail wind....
     
    TundraLLama [OP] likes this.
  14. Jun 10, 2021 at 8:50 PM
    #74
    rt_tundra_co

    rt_tundra_co I'll get tired of tweaking this truck...never

    Joined:
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    Gender:
    Male
    Vehicle:
    '15 SR5 CM TRD
    Magnaflow cat-back exhaust Leer Topper, color matched to truck Thule Aeroblade roof rack on topper FABTECH 4” Suspension Lift Decked Storage, 2 drawer SPYDER LED headlights and taillights kits Hertz HDP5 5 Channel Class D Amplifier 2 x 10” subwoofer boxed behind rear seat Door speaker upgrades by Elite Auto Sound Colorado Springs Lock’er Down EXxtreme Console Safe LD2043EX Lock’er Down rear seat 3 x safes Lock’er Down gun magnet 80 LED in-grill light bar Baja Designs LED ditch lights TRD Pro grill Rotiform SIX-OR 20x9 wheels 35x12.5R20 Toyota Open Country R/T tires TheSource sPOD power control hub with in-cab installed accessory switches Firestone Ride Rite air suspension system with Air Command remote, on board compressor and rear bumper air port SDHQ rock sliders
    Where did you get it done? Cost? Thanks!
     
  15. Jun 10, 2021 at 10:01 PM
    #75
    rockmup

    rockmup New Member

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    Greenwell Springs LA.
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    Kings, 5:29's, E-lockers on 37's
    37X13.50X20 Patagonias with 5:29's gets me 12MPG around town, hand calculated.

    I don't remember what I got last time I ran a tank on the interstate but I "think" it was 17+, I'll check it next week
     
    TundraLLama [OP] likes this.
  16. Jun 11, 2021 at 1:27 AM
    #76
    BoysandHisToys

    BoysandHisToys New Member

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    2013 Tundra Crewmax Limited
    12” Bulletproof Lift, AFE CAI, AFE Exhaust
    I’m interested too. I recently picked up a 2013 Crewmax lifted 12” on 38’s. Getting around 11 according to the dash. But my speed is off 5 - 10 mph depending on how fast I’m driving.
     
    TundraLLama [OP] likes this.

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