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Wheel spacers for offset/backspacing

mcp6530

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I've read, I've researched, I have been on customoffests site and the tire calculator and offset sites. It's all been a huge learning curve. Just need a couple things answered please.

I run stock 20x9's wheels/tires on my 2019 Big Horn. Stock offset is +19 as you know.
I purchased Nitto G2's 305/55/20. Wider and bigger tire obviously. Wanted the size in XL version and not LT. Bilstein 5100 front level kit.
I would like a 0 or even a -10 or so offset and most of the setups I see say that I need a backspace of 5 to get there with those tires.
How do you obtain a backspace of 5? Do I need to purchase a 1" wheel spacer? Or how do you adjust backspacing? Is it just how the tire is mounted or is a part required to adjust that number?
Thanks in advance!
 

dtlrshp

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To get your offset from +19 to 0, you would need a 19mm spacer (more appropriately called an adapter). Probably easier to find a 20mm, which would put you at -1 offset. These are millimeter measurements. 25.4mm = 1 inch


Zero offset means that the mounting point is directly center of the wheel width. So if your rim width is 9" wide, 0 offset would mean the face of the wheel where it meets your hub is directly in the middle, or 4.5" to each face of the rim.

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Decuchi23

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Make sure your wheels have the pockets in the back to allow room for the lugs. I believe 1 inch spacer is the lowest you can go without having to trim the lugs if you have the pockets. Also make sure you go with a quality hubcentric spacer.
 

rubrduk

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I've read, I've researched, I have been on customoffests site and the tire calculator and offset sites. It's all been a huge learning curve. Just need a couple things answered please.

I run stock 20x9's wheels/tires on my 2019 Big Horn. Stock offset is +19 as you know.
I purchased Nitto G2's 305/55/20. Wider and bigger tire obviously. Wanted the size in XL version and not LT. Bilstein 5100 front level kit.
I would like a 0 or even a -10 or so offset and most of the setups I see say that I need a backspace of 5 to get there with those tires.
How do you obtain a backspace of 5? Do I need to purchase a 1" wheel spacer? Or how do you adjust backspacing? Is it just how the tire is mounted or is a part required to adjust that number?
Thanks in advance!
0 offset is going to be 5" backspace on a 9" rim,...You would be better with a 1.25" spacer, that puts you at -13 offset and you will clear the lugs without trimming (if you have the wheel pockets)

Also...only buy BORA spacers, they are proven safe and smart


The 305 Terra Grappler is a 12.1 wide tire (it's beefy, I had 305/45/22 on my Silverado...i put 65k miles on them and still had good tread)
 

mcp6530

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0 offset is going to be 5" backspace on a 9" rim,...You would be better with a 1.25" spacer, that puts you at -13 offset and you will clear the lugs without trimming (if you have the wheel pockets)

Also...only buy BORA spacers, they are proven safe and smart


The 305 Terra Grappler is a 12.1 wide tire (it's beefy, I had 305/45/22 on my Silverado...i put 65k miles on them and still had good tread)
Thanks - smallest I could find were 1.5" so I have those. May return them if I can find thinner but have not been able to.
 

mcp6530

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Make sure your wheels have the pockets in the back to allow room for the lugs. I believe 1 inch spacer is the lowest you can go without having to trim the lugs if you have the pockets. Also make sure you go with a quality hubcentric spacer.
how do I know if i have "pockets"? it's the stock night edition 20'' rim (2019).
 

MarkB67

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how do I know if i have "pockets"? it's the stock night edition 20'' rim (2019).
No offense but if you don’t know what a wheel pocket is you better make sure you get a professional to install your spacers for you
 

VaBeachRam

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0 offset is going to be 5" backspace on a 9" rim,...You would be better with a 1.25" spacer, that puts you at -13 offset and you will clear the lugs without trimming (if you have the wheel pockets)

Also...only buy BORA spacers, they are proven safe and smart


The 305 Terra Grappler is a 12.1 wide tire (it's beefy, I had 305/45/22 on my Silverado...i put 65k miles on them and still had good tread)

Do you know if you have the pockets if you can clear the lugs with 1" spacers? Thank you.
 

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