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15x8 and Grindage

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


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

Ira
 
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
 
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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
 
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.
 
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.
 
muddybuddy said:
i didnt know they made 15" 8lug aluminum rims
Click to expand...

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.
 
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?
 
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.
 
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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