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Backspace question

Discussion in 'Wheels & Tires' started by R2P, Apr 5, 2019.

  1. Apr 5, 2019 at 8:08 AM
    #1
    R2P

    R2P [OP] New Member

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    before I go dropping new wheel money, I have a question that I couldn’t find an answer to. I’m looking at purchasing some wheels that are 17x9 with a 38 mm backspace. The tire size I plan on running is 265/70/17. I will be ordering bilstein 5100’s with some Eibach springs. How much lift would I need for such a large amount of backspace to fit with little to no rubbing? Thanks in advance for any help/advice.
     
  2. Apr 5, 2019 at 8:12 AM
    #2
    R2P

    R2P [OP] New Member

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    Forgot to add I have a 4th gen limited.
     
  3. Apr 5, 2019 at 8:16 AM
    #3
    Thatbassguy

    Thatbassguy New member? Really??

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    Backspace or offset? 38 MM is very little backspace. This would push your wheels very far outward beyond the wheel wells. I would think you might rub the wheel wells if anything, which lift might not help with.
     
  4. Apr 5, 2019 at 2:40 PM
    #4
    HoBoDanny

    HoBoDanny Dude...

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    RCI Skid Plate CBI Ditch Light Brackets Hankook DynaPro ATM RF10 265 70R17 113T Tires 1.25” Wheel Spacers TPMS Bypass Mod Hydrocarbon Filter Removed Merca decal 2” leveling kit front only Black headlights
    Being mm I’m guessing you meant offset?
     
  5. Apr 5, 2019 at 3:34 PM
    #5
    Thatbassguy

    Thatbassguy New member? Really??

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    That's what I figured, too.

    Assuming that's a positive offset, that will pull the rim towards the suspension quite a bit more than stock. Although, I'm not sure what the stock offset is.

    If that's the case, you might need to run spacers with those rims. Or choose different rims
     
  6. Apr 5, 2019 at 4:02 PM
    #6
    HoBoDanny

    HoBoDanny Dude...

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    RCI Skid Plate CBI Ditch Light Brackets Hankook DynaPro ATM RF10 265 70R17 113T Tires 1.25” Wheel Spacers TPMS Bypass Mod Hydrocarbon Filter Removed Merca decal 2” leveling kit front only Black headlights
    I think stock is +30 mm so it wouldn’t be far off. So if the wheel is 7.5” wide that would be about 5 1/4” backspacing :notsure: which I think would contact the control arm. So would definetly need wheel spacers maybe 1 1/4”. Then if your doing 5100’s and Eibach springs your going to get 2.5”-3” lift so I would think you’ll be ok.
    I’m running 265/70r17 on oem wheels with 1.25” spacers and 2” lvling kit. Had to move the front inner fender forward but good other than that.
     
    Backslider likes this.
  7. Apr 5, 2019 at 4:41 PM
    #7
    Thatbassguy

    Thatbassguy New member? Really??

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    Another thing to consider is that with that much lift, you might want to get aftermarket upper control arms.
     
    Last edited: Apr 5, 2019
  8. Apr 5, 2019 at 5:11 PM
    #8
    HoBoDanny

    HoBoDanny Dude...

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    RCI Skid Plate CBI Ditch Light Brackets Hankook DynaPro ATM RF10 265 70R17 113T Tires 1.25” Wheel Spacers TPMS Bypass Mod Hydrocarbon Filter Removed Merca decal 2” leveling kit front only Black headlights
    Possibly. might be ok but if off roading a lot the oem ball joints will wear much quicker.
     
  9. Apr 5, 2019 at 8:29 PM
    #9
    Thatbassguy

    Thatbassguy New member? Really??

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    RSG sliders, Yakima offgrid basket, Pro-Comp wheels, SOS Streamline bumper and skids, Warn VR EVO10S winch + Ultimate Sidewinder, Bilstein 6112 + 5100 + rear lift coils, Rigid Dually SS ditch lights w/Caliraised brackets and OEM style dash switch
    Makes sense. I'll admit I don't know a lot about the 4th gens despite having owned an '03 for 12 years. I never modded it. I just put in gas and changed the oil and drove the shit out of it. Sometimes I still miss the torque of that v8:)
     
    HoBoDanny likes this.
  10. Apr 6, 2019 at 11:12 AM
    #10
    R2P

    R2P [OP] New Member

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    Yes, my fault, the offset is -38mm not +38. The backspace is 3.5” and the width of the rim is 9”. It’s the SCS F5 wheel. The do also make a version of the wheel that is -10 mm offset but I love the look of the -38’s...
     

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