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

17x9 6x139.7 with 4.75" of BS and -6 offset

Discussion in 'Wheels & Tires' started by CaptMorgan, Nov 8, 2010.

  1. Nov 8, 2010 at 10:01 AM
    #1
    CaptMorgan

    CaptMorgan [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41949
    Messages:
    243
    Gender:
    Male
    Tempe
    Lift, tires, aux-in, LED Taillights, Flowmaster
    Hoping someone could tell me if a 17x9 6x139.7 with 4.75" of BS and -6 offset would work with a 3" lift and 285/70's

    Thanks
     
  2. Nov 8, 2010 at 10:46 AM
    #2
    Fabulous

    Fabulous Well-Known Member

    Joined:
    Jul 17, 2009
    Member:
    #19807
    Messages:
    831
    Gender:
    Male
    First Name:
    Fabian
    Calgary, AB
    Vehicle:
    2006 Tacoma double-cab TRD Sport
    Homertaco grill, Light Racing UCA's, 2.8" front lift (5100's at 0.85 setting and Eibach springs) 2" AAL with rear 5100's, Wet Okole seat covers fr/ bk. 17 x 9 Incubus Crusher wheels w/ 4.5" backspacing. 30% tinted front windows.
    I think you need a 4.5 BS to run a 285 tire.
     
  3. Nov 8, 2010 at 10:52 AM
    #3
    CaptMorgan

    CaptMorgan [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41949
    Messages:
    243
    Gender:
    Male
    Tempe
    Lift, tires, aux-in, LED Taillights, Flowmaster
    thanks for the reply, I was thinking that too but that was with 0 offset so I was wondering if the -6 offset would counter act the 4.75 back spacing...
     
  4. Nov 8, 2010 at 10:54 AM
    #4
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    You might be able to fit them but it's going to be close. are you getting them online or a tire shop?
     
  5. Nov 8, 2010 at 10:57 AM
    #5
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    9 millimeters = 0.354330709 inches so this is the conversion like I said it's going to be close.

    i think if someone chimes in with a 4.50BS and a 0 offset with the distance to the UCAs we can figure this out.
     
  6. Nov 8, 2010 at 11:06 AM
    #6
    CaptMorgan

    CaptMorgan [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41949
    Messages:
    243
    Gender:
    Male
    Tempe
    Lift, tires, aux-in, LED Taillights, Flowmaster
    I ordered then at discount tire and they were way off, they ordered a rim with 25mm offset never did know the back spacing, I really like the rim and don't want to give up on it, this is the only other configuration with the correct lug pattern

    Its -6mm just bringing it up cause you mentioned 9 above
     
  7. Nov 8, 2010 at 11:13 AM
    #7
    rmdesigns

    rmdesigns Active Member

    Joined:
    Sep 3, 2010
    Member:
    #42686
    Messages:
    37
    Gender:
    Male
    Orange, CA
    Vehicle:
    '11 DC SB TRD
    Debadged - TC Upper Control Arms - Method Wheels - 285/70/17 Terra Grapplers
    I'm running 17 x 8.5 with 4.75 backspace and 0 offset with 285/70/17. I have about an inch of clearance from tire to stock UCA.
     
  8. Nov 8, 2010 at 11:14 AM
    #8
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    Carp Typo here is the conversion 6 millimeters = 0.236220472 inches
    So your looking at about 1/4 of an inch. But i think they measurer the back spacing from the mounting area of the rim so your tire is going to sit at the same place no matter what the offset is it will just stick out farther. But i could be wrong.
     
  9. Nov 8, 2010 at 11:17 AM
    #9
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    Well then CaptMorgan your golden you should have 1 1/4" of clearance with that size rim. But someone else chime in just in case I'm wrong.
     
  10. Nov 8, 2010 at 11:20 AM
    #10
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,729
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    ^^This^^ Backspacing is backspacing regardless of what the offset is. A 4.5" BS with -12mm offset will be the same backspacing as a 4.5" backspace with +12mm offset. It just means the rim width is different.

    You can see a good visual of this here

    https://www.rsracing.com/tech-wheel.html
     
  11. Nov 8, 2010 at 11:26 AM
    #11
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    That's what I thought so CaptMorgan your wheel is just going to stick out a little further then rmdesigns
     
  12. Nov 8, 2010 at 11:31 AM
    #12
    rmdesigns

    rmdesigns Active Member

    Joined:
    Sep 3, 2010
    Member:
    #42686
    Messages:
    37
    Gender:
    Male
    Orange, CA
    Vehicle:
    '11 DC SB TRD
    Debadged - TC Upper Control Arms - Method Wheels - 285/70/17 Terra Grapplers
    I would agree. I don't have a picture right now, but my tires don't stick out much at all. The tread is about flush with the fender flare.
     
  13. Nov 8, 2010 at 11:33 AM
    #13
    JLee

    JLee The Man! Vendor

    Joined:
    Jul 20, 2010
    Member:
    #40461
    Messages:
    16,761
    Gender:
    Male
    First Name:
    Jerry
    Bay Area NorCal
    Vehicle:
    02 Extra cab SAS Linked front and rear
    I lost track thousands of dollars ago.
    I think a little protrusion looks good if you can't already tell by my wheels and tires.
     
  14. Nov 8, 2010 at 12:04 PM
    #14
    CaptMorgan

    CaptMorgan [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41949
    Messages:
    243
    Gender:
    Male
    Tempe
    Lift, tires, aux-in, LED Taillights, Flowmaster
    ok, think I am getting it See if this is right, a 17x9 with 4.25 backspacing would have +6 offset?

    wait, doesn't everyone run 17x8 with 4.5 back spacing and 0 offset? From what understand, on a 8 inch wheel you would have to have a 4 inch back spacing to get a 0 off set
     
  15. Nov 8, 2010 at 12:16 PM
    #15
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,729
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Keep in mind that the rim width is the INSIDE on the rim surface (where the tire bead sits) and the center line is calculated from the OUTSIDE of the rim. An 8" wide rim might actually be 8.5" in TOTAL width because of this. So that would make the BS different.

    [​IMG]
     
To Top