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mpg from 33x10.5 to 12.5 ?

Discussion in '1st Gen. Tacomas (1995-2004)' started by oregontaco99, Oct 19, 2012.

  1. Oct 19, 2012 at 1:02 PM
    #1
    oregontaco99

    oregontaco99 [OP] Member

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    3 inch suspension lift,33x10x15 km2,offset rims,flowmaster(2chamber),spectre cold air intake, headache rack, box,brush guard with kc's,chipped,billstein shocks
    So I have 33 10.5s on right now with the 3.4 motor and I'm getting like 15 to 16. Can anyone tell me about what I would be getting with 33 12.5s?
     
  2. Oct 19, 2012 at 1:25 PM
    #2
    661prerunner

    661prerunner Well-Known Member

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    I get 14-15 city 18-19 hwy on 33-12.50s Hankook ATs
     
  3. Oct 19, 2012 at 1:43 PM
    #3
    Digiratus

    Digiratus Adventurer

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    Everything else being equal, you can bet mpgs will suffer, at least a little. Anytime you increase the weight of the tire, and they will be heavier, you loose a little mpg.
     
  4. Oct 19, 2012 at 2:19 PM
    #4
    madhatter45

    madhatter45 Active Member

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    I have 33x12.50s and am getting 18mpg overall with mixed driving. My tires are C load range, so about 10lbs lighter than a comperable tire in an E. I also drive gently; shifting at about 2k rpms.
    Also, how are you mesuting your milage? Your odometer is off if you haven't adjusted it for 33" tires. Ive been using gps to clock miles, and theres about a 7% differnce in the odometer reading and the gps mileage.
     
  5. Oct 19, 2012 at 2:52 PM
    #5
    Sittingbull2

    Sittingbull2 Old N.R.A. Hippy

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    3" Body lift, ARB Front Bumper w/9000 lb. Warn Winch, Chevy Alum. Rims w/ Kelly 285's M/S
    My Yota has 285/75/16 according to what I found out they are 32.85 inches tall. Going 50mph according to speedometer and GPS shows 56mph but I haven't taken time to calculate what that would do for showing actual miles. So MPG is going to be off also if speed O is off also. I get about 220 to 230 on a full tank according to Odometer which should be off some. Hope that helps some.

    Sittingbull2
     
  6. Oct 19, 2012 at 3:08 PM
    #6
    BuzzardsGottaEat

    BuzzardsGottaEat Well-Known Member

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    You're adding weight and width, it will inevitably go down. I personally don't see a single reason whatsoever to run flotation width tires unless you DD on snow/mud/sand deeper than your doors . . .
     
  7. Oct 19, 2012 at 4:20 PM
    #7
    186000mps

    186000mps ..Slingin' up mud and we're scarying off bunnies..

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    Bilstein 5100's, Toytec front adjustable coilover kit, Exporear leafs, Fox resi rears, Slotted & Drilled front rotors, 33x12.50 BFG ATs on Outlaw II 15 x 10s, Bushwacker cutout flares, K&N cold air intake with aluminum sheathing water baffles, ARB bumper with XD9000 winch with wireless remote, IPF 900XS lights, Flowmaster cat-back exhaust, Rhino bed liner, UWS gullwing toolbox with tools and recovery gear. 48" Hi-Lift Jack secured under toolbox.
    With 33 x 12.50 BFG ATs on 15s with the 3.4L/manual I get around 14-16mpg.
    While the mud/waterholes around here can be up to the doors in places, these tires have never let me down. The extra width is nice offroad in the snow, but on snowy roads...not so good. For snow tires I will eventually go thinner.
     
  8. Oct 20, 2012 at 7:59 AM
    #8
    85GT 79FJ40

    85GT 79FJ40 Well-Known Member

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    I used to commute 100 miles a day in a lifted 98 3.4/manual 4x4 with 33x12.50's and I got 16mpg on a commute that was all 55-75 mph. Gas was a lot cheaper back then though. Although they don't ride as good a 12.50 tire does add a bit of stability for cornering. Many people don't consider that as you go up in height you should really also go out in track width to maintain stability.
     
  9. Oct 20, 2012 at 9:59 PM
    #9
    oregontaco99

    oregontaco99 [OP] Member

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    cash
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    99 taco
    3 inch suspension lift,33x10x15 km2,offset rims,flowmaster(2chamber),spectre cold air intake, headache rack, box,brush guard with kc's,chipped,billstein shocks
    Thanks everyone. I'm going with the 12.5s.
     

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