Backspace question

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Oct 8, 2005
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Blandon Pa
I'm looking at getting 15x10 wheels and 33 12.5 15 tires. Could somebody give me advice on how much backspacing I would need for the wheels. Thank you.
 
I have 2.5 HFS taller shackles, an Add a leaf and about a one inch body lift. Sounds like alot but it only looks like about 3 inch lift. I agree, from what people are saying I need about a 3.5 backspacing and from what I measure, about 4 1/8 inch bore. I think that means about 106.0 mm hole I guess.
 
I'm looking at Summit racing for the wheels. I can't find the hole or bore size on the wheels I want. They're a 52 series, gloss black. I'm a little confused. They seem to have the best prices on a black steel wheel but I want to make sure I get everything right.
 
I just received my wheels, they're 3.75" backspace, I was supposed to get 3.5. I put just the wheel on and it doesn't hit the tierod but do you think I'll be alright with the tire on? It will be a 33 12.5 15 KM2? I realize I could put a spacer on but I rather not get any wider if I can help it.
 

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