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Calibrating Speedo

Discussion in '2nd Gen. Tacomas (2005-2015)' started by fruitaboy, Dec 21, 2011.

  1. Dec 21, 2011 at 8:26 AM
    #1
    fruitaboy

    fruitaboy [OP] Member

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    I am looking at replacing my stock tires and wheels. I would like to put 265/75/16's on, but I would like to keep my speedo accurate! I talked with the toyota shop and they told me toyota does not have the capabilities to re-cal the speedo. Does anyone kwow of another way to keep my speedo accurate??
     
  2. Dec 21, 2011 at 8:28 AM
    #2
    bjmoose

    bjmoose Bullwinkle J. Moose

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    It's spendy, but the hypertech speedometer calibrator works.

    but just going to 265/75R16 - that's a pretty small change - I'd try it first before I went off and changed anything.
     
  3. Dec 21, 2011 at 8:29 AM
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    Aw9d

    Aw9d That one guy

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    Not sure if you can do it on the toyota's or not.. I had my 95 acura done at a local shop when I adjusted my rim's and what not.

    Really, best thing to do is fine one of those photo radar speed things, fly by it at 50 and see what it pegs you at.. you shouldn't be off that much from wheels and tires.
     
  4. Dec 21, 2011 at 8:31 AM
    #4
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    What model truck do you drive?

    I found that the 2009 TRD Sport that I had was +3mph by default. Now that I put the 265 Duratracs on my spedo reads dead on. You should be fine without any calibration. It should actually fix your overzealous stock speedo.
     
  5. Dec 21, 2011 at 8:31 AM
    #5
    ItalynStylion

    ItalynStylion Sounds Gooooood

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    Beat me to it.
     
  6. Dec 21, 2011 at 9:06 AM
    #6
    wmdpowell

    wmdpowell Well-Known Member

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    Try comparing to GPS. You might find the speedometer reports you traveling faster than you actually are (which is a good thing).

    Most cars are off a bit but know how much could keep you out of trouble.


    Welcome to toyotaworld.
     
  7. Dec 21, 2011 at 9:24 AM
    #7
    Bloodhound

    Bloodhound Space For Rent

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    That's what I was gonna say. Or if you don't have access to one, try to find a cop and ask him if he would radar your truck, around here they will and tell you your speed without a problem.
     
  8. Dec 21, 2011 at 9:37 AM
    #8
    rhavin42

    rhavin42 Well-Known Member

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    Exact same scenario for me. Stock 265/65/17 spedo was +3-5 MPH went to 265/70/17 spedo is DEAD on with gps. However the odometer is now off by ~3%, which coincidentally is the same difference in tire size 265/70 is ~3% larger than 265/65
     
  9. Dec 22, 2011 at 8:25 AM
    #9
    LMR

    LMR GO JETS GO

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    I noticed it too on a recent trip. Compared it with my GPS and I was 4-5 MPH off.
     
  10. Dec 22, 2011 at 8:26 AM
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    Brunes

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    How was the distance traveled compared to the ODO??
     
  11. Dec 22, 2011 at 8:29 AM
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    LMR

    LMR GO JETS GO

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    It seemed fairly accurate but my GPS is in Kilometers and the truck is in miles so my calculations may be a bit off.
     
  12. Dec 22, 2011 at 8:44 AM
    #12
    fruitaboy

    fruitaboy [OP] Member

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    Thank you all, I sure appreciate the info!!
     
  13. Dec 22, 2011 at 4:19 PM
    #13
    David K

    David K Well-Known Member

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    To add one more confirm (and we have been saying this for years): 265/75-16 will make your speedometer become accurate finally! It reads too fast with the factory tires.
     
  14. Dec 23, 2011 at 10:19 AM
    #14
    rhavin42

    rhavin42 Well-Known Member

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    for me was about 3% off. so when the ODO said i traveled 100 miles i really traveled 103 miles
     
  15. Dec 23, 2011 at 3:57 PM
    #15
    bigtex2884

    bigtex2884 Well-Known Member

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    So since everyone is aware stock tires read faster than you are actually going wouldnt that cause your mileage to be more than you really traveled and if that's the case wouldn't this effect your warranty coverage. Haha just a thought

    Truck says you've hit 40k
    You've really only gone 38,800k
     
  16. Dec 23, 2011 at 4:00 PM
    #16
    bigtex2884

    bigtex2884 Well-Known Member

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    Also effect resale value haha
     
  17. Dec 23, 2011 at 4:07 PM
    #17
    4x4jeep

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    Thats why I didn't recalibrate with larger tires. really going more miles than truck says
     
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