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from 27" to 30" tire on a 4 cylinder ... experience

Discussion in '2nd Gen. Tacomas (2005-2015)' started by fchen7, Nov 23, 2011.

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  1. Nov 24, 2011 at 10:07 PM
    #21
    fchen7

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    fchen7 [OP] Member

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    5 lug automatic - 3.58
    5 lug manual - 3.31

    higher gear ratio in automatic than manual ..... does this mean automatic in highest gear (4th) will use less gas than the manual in 5th gear ??
     
    fchen7, Nov 24, 2011
    #21
  2. Nov 24, 2011 at 10:14 PM
    #22
    AndrewFalk

    #22
    AndrewFalk Science!

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    Manual transmissions generally have a lower numerical gear ratio than a comparable automatic. Higher numerical gear ratio leads to higher RPM's for a given speed, which equates to increased fuel consumption.
     
    AndrewFalk, Nov 24, 2011
    #22
  3. Nov 24, 2011 at 10:21 PM
    #23
    fchen7

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    fchen7 [OP] Member

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    i see. I got it reversed. I usually can average 28mpg on hwy in a manual 4 cylinder; i should expect less in the automatic i just got.
     
    fchen7, Nov 24, 2011
    #23
  4. Nov 24, 2011 at 10:28 PM
    #24
    epa4wd

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    epa4wd Well-Known Member

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    I'm running 29" also honestly I didn't feel that much of a difference, but if there was a loss, the improvement in handling was well worth it. The skinny 215 tires make the truck feel like it was all over the road
     
    epa4wd, Nov 24, 2011
    #24
  5. Nov 24, 2011 at 10:29 PM
    #25
    fchen7

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    fchen7 [OP] Member

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    again. better pictures this time ...

    [​IMG]
    [​IMG]
    [​IMG]
     
    fchen7, Nov 24, 2011
    #25
  6. Nov 25, 2011 at 12:14 AM
    #26
    takao96753

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    takao96753 Member

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    thank you for the gear ratio information I calculated my MPG 24.7
     
    takao96753, Nov 25, 2011
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  7. Nov 25, 2011 at 3:38 AM
    #27
    fchen7

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    fchen7 [OP] Member

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    235/75/15 ?
     
    fchen7, Nov 25, 2011
    #27
  8. Nov 25, 2011 at 6:39 AM
    #28
    AndrewFalk

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    AndrewFalk Science!

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    I'm on the fence. I know my truck would look awesome with some 235's on it, but I get amazing MPG right now, so I don't know if I want to sacrifice that.
     
    AndrewFalk, Nov 25, 2011
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  9. Nov 25, 2011 at 8:54 AM
    #29
    epa4wd

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    epa4wd Well-Known Member

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    235/55/18
     
    epa4wd, Nov 25, 2011
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  10. Nov 25, 2011 at 9:06 AM
    #30
    Johns Taco

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    Johns Taco I'm not 4x4, and have an open diff. So i'm 4x1

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    These pics are killing me, please put those flares on with bigger tires.
     
    Johns Taco, Nov 25, 2011
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  11. Nov 26, 2011 at 12:26 AM
    #31
    fchen7

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    fchen7 [OP] Member

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    haha. .. i will ... that's why i am here asking tire questions ... :)
     
    fchen7, Nov 26, 2011
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  12. Nov 26, 2011 at 12:28 AM
    #32
    fchen7

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    fchen7 [OP] Member

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    235/55/18 ..... can i see some picture please ...
     
    fchen7, Nov 26, 2011
    #32
  13. Nov 26, 2011 at 8:09 AM
    #33
    takao96753

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    Fchen my vehicle is a stock 4x4 I get 24.7 mpg in Hawaii its considered a highway but mainland a surface street.
     
    takao96753, Nov 26, 2011
    #33
  14. Nov 26, 2011 at 7:32 PM
    #34
    fchen7

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    fchen7 [OP] Member

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    would i have problem with this tire if i plan to keep truck stock ?

    245/70/16 is 29.5 inch in diameter


    what about 245/75/16 ? it's 30.5 inch diameter ...


    stock tire is 215/70/15 ... 26.9 inch ..

    thanks .. i am getting new tires in a few days..
     
    fchen7, Nov 26, 2011
    #34
  15. Nov 27, 2011 at 7:16 PM
    #35
    takao96753

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    takao96753 Member

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    245 is the height and I think 70 or 75 is the width as far if it'll fit I have no idea mine is stock 4x4
     
    takao96753, Nov 27, 2011
    #35
  16. Nov 27, 2011 at 7:19 PM
    #36
    TexasTacoma37

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    TexasTacoma37 Well-Known Member

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    I believe the largest you can go is 235/75/15
    245 is the width, in mm. 70 is the sidewall height, as a percentage of the width.
     
    TexasTacoma37, Nov 27, 2011
    #36
  17. Nov 27, 2011 at 7:35 PM
    #37
    TacomaBuzz

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    TacomaBuzz Well-Known Member

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    :popcorn: awaiting those pics of the new tires, fender flares on a 5 Lugger......
     
    TacomaBuzz, Nov 27, 2011
    #37
  18. Nov 28, 2011 at 5:49 AM
    #38
    AndrewFalk

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    AndrewFalk Science!

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    245 is the width in mm.
    70/75 is the aspect ratio of the width to sidewall height.
    R15/16 is the diameter of the rim in inches.
     
    AndrewFalk, Nov 28, 2011
    #38
  19. Nov 28, 2011 at 9:17 AM
    #39
    fchen7

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    fchen7 [OP] Member

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    i think i am going with 245/70/16 .... will post pictures in a day or two... maybe today..
     
    fchen7, Nov 28, 2011
    #39
  20. Nov 28, 2011 at 11:12 AM
    #40
    TexasTacoma37

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    TexasTacoma37 Well-Known Member

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    They may not fit, see my post above.
     
    TexasTacoma37, Nov 28, 2011
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Page 2 of 3

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