1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

New tires - speedometer/odometer issues

Discussion in 'Wheels & Tires' started by cavscout, Jul 15, 2009.

  1. Jul 15, 2009 at 10:29 AM
    #1
    cavscout

    cavscout [OP] New Member

    Joined:
    Jul 13, 2009
    Member:
    #19608
    Messages:
    3
    Gender:
    Male
    If I go from 265/70R16 (stock on the TRD Off Road) to 265/75R16 will I see any issues with the Speedometer, Odometer, or anything else? Thanks

    my bad correction on the tire sizes
     
  2. Jul 15, 2009 at 10:33 AM
    #2
    HOSS454

    HOSS454 Well-Known Member

    Joined:
    Oct 5, 2008
    Member:
    #9699
    Messages:
    103
    Gender:
    Male
    Pukalani
    Vehicle:
    08 Sport
    Bolt ons here and there
    i thought that the offroad models come with 265/70 16.. i know that the sports come with 265/65 17..
     
  3. Jul 15, 2009 at 11:46 AM
    #3
    brian

    brian Another Traitor

    Joined:
    Apr 15, 2009
    Member:
    #16011
    Messages:
    7,557
    Gender:
    Male
    Elizabeth City, NC
    Vehicle:
    2008 F-350 Powerstroke
    It'll probably correct it... LoL

    With stock tires my speedo/odo was faster than it should have been. I know this is true on alot of tacomas. Bastards.
     
  4. Jul 15, 2009 at 8:57 PM
    #4
    DdayIsNear

    DdayIsNear Well-Known Member

    Joined:
    Jun 14, 2009
    Member:
    #18432
    Messages:
    6,499
    Gender:
    Male
    First Name:
    Crazy
    NW Jersey
    Vehicle:
    TRD Offroad
    All pro sliders
    how does that calculator work, its late and im tired,,but i dont know how to read it at this time..
     
  5. Jul 15, 2009 at 9:03 PM
    #5
    "OldManTan"

    "OldManTan" Now my Taco is bloody Red, ewww

    Joined:
    May 18, 2009
    Member:
    #17401
    Messages:
    1,239
    Gender:
    Male
    Buffalo, NY
    Vehicle:
    08 Access Cab, Radiant Red
    Pioneer HU, Duratracs on Black stockers, Century topper with custom electronic lock, Illuminated 4x4 switch, Foglight Mod, Always on 12v Plugs, Sub & Amp, LED Interior Lights, Cup Holder Mod, Andres Devil Horns, CB radio, steps, relocated trailer harness, blacked out everything!!
    Actually can't wait to replace my stock 245-75 16's with 265-75-16's to help correct the speedometer issue!! Atleast it will make up half the difference at 50mph!
     
  6. Jul 16, 2009 at 9:48 AM
    #6
    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

    Joined:
    Jun 22, 2009
    Member:
    #18751
    Messages:
    210
    Gender:
    Male
    BC Canada
    Vehicle:
    2013 taco access cab 4x4
    Putco led map light bulbs, bed mat, Xiang trifecta tonneau, blackout front emblem, paint tow hoop, led bed light strip, scan gauge II, debadge, buff paint, oem fog light kit, 1000w inverter, Viair 300P compressor, Contura V dash switches, chop last L bend from exhaust, remove charcoal air filter, extinguisher, mag light, Ss side steps, kayak rack, tailgate security, bed mat security
    ECM is calibrated at the factory for the wheel/tire - rear end ratio as built.
    Changing to a different diameter tire will result in an incorrect reading on the odo and speedometer.

    Curious - have folks who lifted their trucks and put on 3x" tires been able to have the dealer re-program the ECM to correct?
     
  7. Jul 16, 2009 at 10:30 AM
    #7
    "OldManTan"

    "OldManTan" Now my Taco is bloody Red, ewww

    Joined:
    May 18, 2009
    Member:
    #17401
    Messages:
    1,239
    Gender:
    Male
    Buffalo, NY
    Vehicle:
    08 Access Cab, Radiant Red
    Pioneer HU, Duratracs on Black stockers, Century topper with custom electronic lock, Illuminated 4x4 switch, Foglight Mod, Always on 12v Plugs, Sub & Amp, LED Interior Lights, Cup Holder Mod, Andres Devil Horns, CB radio, steps, relocated trailer harness, blacked out everything!!
    coma09, it must have been the end of the day on a friday, cause mine is 5mph off at 50mph. And I have stock tires and wheels. It is a rather common complaint on here. By increasing my tire size I will gain about half of that difference back at 50mph. Read around, that variance is with-in Toyotas "spec".
     
  8. Jul 16, 2009 at 10:37 AM
    #8
    Slypted

    Slypted Well-Known Member

    Joined:
    Jul 7, 2009
    Member:
    #19366
    Messages:
    228
    Gender:
    Male
    First Name:
    Frank
    NJ
    Vehicle:
    08 Tacoma SR5 4x4
    Smiitybuilt nerf bars, Hunter bull bar w/ KC hilights/ Toy-tec 3" spacer, AAL lift, LR UCAs, Helo he842 16x8 Wheels, BFG KM2 285x75x16
    Yeah mine was off about 3-4 mph at 50 so hopefully when I get the 285's on next week it'll balance out.
     
  9. Jul 16, 2009 at 10:41 AM
    #9
    ColtsTRD

    ColtsTRD .....

    Joined:
    May 13, 2009
    Member:
    #17177
    Messages:
    17,826
    Gender:
    Male
    First Name:
    Scott
    AZ
    Vehicle:
    2005 TRD DCSB
    Not enough to give a shit about
     
  10. Jul 16, 2009 at 11:02 AM
    #10
    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

    Joined:
    Jun 22, 2009
    Member:
    #18751
    Messages:
    210
    Gender:
    Male
    BC Canada
    Vehicle:
    2013 taco access cab 4x4
    Putco led map light bulbs, bed mat, Xiang trifecta tonneau, blackout front emblem, paint tow hoop, led bed light strip, scan gauge II, debadge, buff paint, oem fog light kit, 1000w inverter, Viair 300P compressor, Contura V dash switches, chop last L bend from exhaust, remove charcoal air filter, extinguisher, mag light, Ss side steps, kayak rack, tailgate security, bed mat security
    When our plant used to build up the instrument panels in-house, the cluster was tested after assembly, and the spec for the speedo was +/- 5mph.
    That was with the cluster sitting horizontal and not accounting for any errors in pointer balance when vertical. Generally they were more accurate than that ... but that was the spec.

    As a general statement .... manufacturers want them to read high, to avoid legal issues around speed related lawsuits. Of course the odo racks up the miles sooner as well, but that's just being paranoid ... or is it ? :)
     
  11. Jul 16, 2009 at 11:43 AM
    #11
    "OldManTan"

    "OldManTan" Now my Taco is bloody Red, ewww

    Joined:
    May 18, 2009
    Member:
    #17401
    Messages:
    1,239
    Gender:
    Male
    Buffalo, NY
    Vehicle:
    08 Access Cab, Radiant Red
    Pioneer HU, Duratracs on Black stockers, Century topper with custom electronic lock, Illuminated 4x4 switch, Foglight Mod, Always on 12v Plugs, Sub & Amp, LED Interior Lights, Cup Holder Mod, Andres Devil Horns, CB radio, steps, relocated trailer harness, blacked out everything!!
    I fully agree I want it over. Just wish it was a little closer, but then again I am a little anal!!
     
  12. Jul 16, 2009 at 11:49 AM
    #12
    DdayIsNear

    DdayIsNear Well-Known Member

    Joined:
    Jun 14, 2009
    Member:
    #18432
    Messages:
    6,499
    Gender:
    Male
    First Name:
    Crazy
    NW Jersey
    Vehicle:
    TRD Offroad
    All pro sliders
    do the stealerships do this??
     
To Top