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Just put on new tires

Discussion in '1st Gen. Tacomas (1995-2004)' started by Tacoguy, Jul 11, 2009.

  1. Jul 11, 2009 at 7:58 PM
    #1
    Tacoguy

    Tacoguy [OP] Well-Known Member

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    I just put on some new Nitto Terra Grapplers 265 70 r16 to replace my stock Bf Goodrich Rugged Trails.

    I was making a trip to Florida and decided my tires had just about enough, not to mention there was a good sale at Discount Tire.

    I got each tire for $155. I love these new tires, however I have noticed one thing. My overall MPG has gone done quite a bit.

    On my trip to Florida I was getting 19-21 mpg. Now with the new tires and pretty much the same conditions, I am now getting 16-18. :(

    Could it be because of new tread and more resistance? Or are Terra Grapplers known to cause a drop in MPG?
     
  2. Jul 11, 2009 at 7:59 PM
    #2
    ColtsTRD

    ColtsTRD .....

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    The tread resistance has everything to do with it...;) I noticed a drop as well when I put TG on my truck, plus I went up a size. 265/75/16 rather than 265/70/16
     
  3. Jul 11, 2009 at 8:17 PM
    #3
    jfr02

    jfr02 Well-Known Member

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    it's mostly tire weight and rotating mass.so if your new tires are bigger and or heavier it will cause a drop in mpg's.i have never heard anything on friction not to say it has nothing to do with it.
     
  4. Jul 11, 2009 at 8:31 PM
    #4
    Tacoguy

    Tacoguy [OP] Well-Known Member

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    Well that sucks I guess. :rolleyes:

    By the way, not sure what your tire calls for, but my terra grappler says max psi of 44 psi for 2400lbs. The tire guys set mine for 37 psi.

    It is the smallest size for terra grapplers, your tire is a bit bigger so your psi is probably bigger. However what do you have yours at?
     
  5. Jul 13, 2009 at 4:25 PM
    #5
    El Taco

    El Taco Well-Known Member

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    yeah, i agree that the more aggressive treads along with the mass of the tires/rims does have a significant impact on the MPGs, along with other factors as well.

    i had great MPGs with stock alloys on semi-aggressive tires before adding the HEAVY-ASS STEELIES with BFG AT KOs in only a 31 size tire!!! best i'm getting now is 16.5, and this is with a Prerunner!!!

    going back to alloys after the treads are done on the KOs.
     
  6. Jul 13, 2009 at 6:19 PM
    #6
    saltbranch

    saltbranch Well-Known Member

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    What load range are your tires? 10 plys in a 16 inch are load range E and are heavy, made for 3/4 ton and 1 ton trucks...is it possible you got those instead of standard light truck tires? The LR-E tires are heavy. They are made for running @ about 80psi. Also arent 265/75/16 more narrow in width than a 265/70/16? On our ranch buggy-93 trooper I went to 10ply Maxxis Mudders( i think they are 265/70/16- not sure but close) MPG went down, but ability to drive over cactus at will went up with no worries of flats.
     
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