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15x8 and Grindage

Discussion in 'The Garage' started by ssped, Sep 12, 2006.

  1. ssped

    ssped 1/2 ton status GMOTM Winner

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    I was trying to put the new 15x8s 8lugs on today and they would not fit no mater how much grinding I did. What the H is the trick? misses the caliper it is hitting the edges of the backing plate at the caliper though. AM i SOL or what? Good excuse for the wife to get bigger wheels and tires?
     
  2. sandawgk5

    sandawgk5 3/4 ton status

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    Grind the backing plate to make it fit. It is common on 8 lug stuff.

    Ira
     
  3. ssped

    ssped 1/2 ton status GMOTM Winner

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    I ground the piss out of it and I am at the point of the metal being to thin to support the edge of the caliper. how much can I grind away? I know every one is grinding these but is not the caliper supported in a foreward rotation by the backing plate? I ground down to about 3mm. I can bend it with pliers.
     
  4. sandawgk5

    sandawgk5 3/4 ton status

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    Got any pictures of your backing plates? I was under the impression you could pretty much cut the whole dust shield away and just leave the caliper mount portion.

    Ira
     
  5. ssped

    ssped 1/2 ton status GMOTM Winner

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    I dont have pix tonight. The part that is hitting is just the 3" next to the caliper about 1"back. It is what the caliper slides against. I beat it with the 5lb hammer and ground it down pretty thin and it still is hitting.
     
  6. ssped

    ssped 1/2 ton status GMOTM Winner

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    I even looked at the tech stuff and they do not show how much of the backing plate you can cut out.
     
  7. muddybuddy

    muddybuddy 3/4 ton status

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    post a pic when u get a chance. what backspacing are you running?
     
  8. 1977k5

    1977k5 3/4 ton status Vendor

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    You don't need a backing plate. It justs traps mud and dirt in there anyway. Cut out as much as you want or take it off completely.
     
  9. sandawgk5

    sandawgk5 3/4 ton status

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    He has a 10 bolt the backing plate actually holds the caliper to a point. It is like 2 pieces though so the dust shield part could be removed. If you cut the lip off of the caliper mount will it weaken the bracket any?
    [​IMG]

    This pic is for info only and is from the 6-8 lug conversion tech article.

    Ira
     
  10. ssped

    ssped 1/2 ton status GMOTM Winner

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    This area

    This is where it is hitting. it actually cleares the caliper there is a 1"wide support area that rests up against the caliper it is hiting between the yellow lines.

    B plate with lines.JPG
     
    Last edited: Sep 12, 2006
  11. jamber2541

    jamber2541 1/2 ton status

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    knowing what backspacing you are running would help, I have 15x10 8 lug Cragars with 4 inches of backspacing and I did not have to grind all that much to make them fit ( if I was smarter back when I got them I would have ordered with 3 1/2" backspacing), you might consider some spacers 1/8" or maybe 1/4" you can pick those up fairly cheap at any local tire dealer
     
  12. DEMON44

    DEMON44 Low-Tech Redneck

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    I've got 15x12's on order for my 44s on the D60........


    but a 2.75" back space ;)
     
  13. ssped

    ssped 1/2 ton status GMOTM Winner

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    Yah I will ook into that tomorrow. I hate spacers though. Maybe I will step up and get another set of wheels with less backspacing.
     
  14. scrappyk5

    scrappyk5 1/2 ton status

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    my back spacing is about 4.25" so i had to do some grinding on my conversion. do you have aluminum rims ? i have read that you cannot use aluminum rims with alot of backspacing becouse how thick the rims are.
     
  15. sandawgk5

    sandawgk5 3/4 ton status

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    Did not think of that I just assumed they were steel:doah: .

    Ira
     
  16. muddybuddy

    muddybuddy 3/4 ton status

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    i didnt know they made 15" 8lug aluminum rims
     
  17. 6.2Blazer

    6.2Blazer 1/2 ton status

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    Ditto. The only 8-lug aluminum rims I ever saw were years ago and made by Weld, but from understanding they have not been offered for years.
     
  18. ssped

    ssped 1/2 ton status GMOTM Winner

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    they are just white steel wagon wheels. I just did the conversion only. they hit pretty good. I have called around and 3 tire stores and 4wheel parts does not have anything with a different offset. I know that a lot of people have done this just need to know how far and how much?
     
  19. thedrip

    thedrip 1/2 ton status

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    the only answer is until it clears. first side will take forever as you grind, fit, grind fit (hopefully you have a rim with no tire on it, makes it all a lot easier). second side tends to go pretty quick because you have an idea how much to cut.
     
  20. ssped

    ssped 1/2 ton status GMOTM Winner

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    I would love a pic of what others have done but I am going to go make it work. Is the 1 inch tab of the backing plate that sits against the side center of the caliper neccesary/functional. It bends pretty easily to be really supportive. has anyone hacked it off without adverse effects?
     

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