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Wheel spacers for offset/backspacing

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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!
 
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.

1619889429041.png
 
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.
 
mcp6530 said:
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!
Click to expand...
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)
 
rubrduk said:
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)
Click to expand...
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.
 
Decuchi23 said:
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.
Click to expand...
how do I know if i have "pockets"? it's the stock night edition 20'' rim (2019).
 
hoping i don't need any spacers and it just looks good with stock setup.
 
mcp6530 said:
how do I know if i have "pockets"? it's the stock night edition 20'' rim (2019).
Click to expand...
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
 
MarkB67 said:
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
Click to expand...
oh i'm not doing this job! i'm sure they will tell me what i need.
 
rubrduk said:
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)
Click to expand...

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