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Backspacing and 40's

Discussion in 'The Garage' started by TWISTEDJACK, Feb 29, 2004.

  1. TWISTEDJACK

    TWISTEDJACK 1/2 ton status GMOTM Winner

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    Backspacing and 40\'s

    Does anyone run 39.5 x 15 with 4 1/4" backspacing????? /forums/images/graemlins/dunno.gif
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Backspacing and 40\'s

    One of my rims is 4 1/8" BS and the other 3 are 3 1/2" BS. I got them used and only recently found that out. I found out when I had my D60 calipers ground for 3 1/2" BS...then got the new 39.5's mounted. The oddball rim ended up on the front, I snugged them all up with an impact and took it for a drive. The bead area of the oddball rim got red hot and melted the bead of the brand new swamper and eventually it blew off the rim.

    Luckily I had just stopped to make a U-turn when the tire let go.

    Anyways, unless you know exactly which rim is the oddball you can't tell which one it is.

    Rene
     
  3. TWISTEDJACK

    TWISTEDJACK 1/2 ton status GMOTM Winner

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    Re: Backspacing and 40\'s

    What I was wondering is will the tires hit the springs??? I know I need to widen the rear fender wells since my 35 rub now.
     
  4. yunit

    yunit 1/2 ton status

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    Re: Backspacing and 40\'s

    I have 42's on 4.125 backspaced rims and I clear the spings, the front clip is another story. /forums/images/graemlins/grin.gif
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Backspacing and 40\'s

    Haven't had a tire hit the springs yet. The front does rub my pitman/draglink...but only because I haven't swapped to crossover yet.

    Rene
     
  6. TWISTEDJACK

    TWISTEDJACK 1/2 ton status GMOTM Winner

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    Re: Backspacing and 40\'s

    Thanks that all I needed to know /forums/images/graemlins/waytogo.gif
     

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