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Old 04-04-2012, 12:49 AM
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Question Backspacing vs Offset

I am looking to buy a set of 20x10 rims and the rim i like comes in either -24 offset with a 4.5 backspace OR -12 offset with a 5.0 backspace. What is the difference here if any? Which one would stick out the furthest?
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Old 04-04-2012, 12:57 AM
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Backspacing is the distance from the inner lip to the wheel's mounting face. Offset is the distance of the mounting facce from the wheel's center line. Negative off set is closer to the inside and positive is closer to the outside.

In your case, the 4.5 back space with -24 off set would stick out more as the mounting face is closer to the inner face and you'd have a deeper lip on the outside.
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Old 04-04-2012, 01:22 AM
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Default thanks!!

I thought so but my brain was gettin fried tryin to work it out!! Appreciate your help.

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Originally Posted by CdnoilRAM View Post
Backspacing is the distance from the inner lip to the wheel's mounting face. Offset is the distance of the mounting facce from the wheel's center line. Negative off set is closer to the inside and positive is closer to the outside.

In your case, the 4.5 back space with -24 off set would stick out more as the mounting face is closer to the inner face and you'd have a deeper lip on the outside.
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Old 04-04-2012, 07:34 AM
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Quote:
Originally Posted by CdnoilRAM View Post
Backspacing is the distance from the inner lip to the wheel's mounting face. Offset is the distance of the mounting facce from the wheel's center line. Negative off set is closer to the inside and positive is closer to the outside.

In your case, the 4.5 back space with -24 off set would stick out more as the mounting face is closer to the inner face and you'd have a deeper lip on the outside.

+1 here
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Old 04-04-2012, 08:34 PM
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Default will they fit ok?

...i am getting an RCX 6" suspension lift and my stock rims are 20x9 with a +19mm offset. I was originally going for a 20x10 with a -12 offset and 5.0 B.S but i would like to move to the -24 offset with 4.5 B.S in order to get them to stick out a little further. I will be running 35x12.5x20....anyone heard of any fitting or rubbing issues with this setup?
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Old 04-04-2012, 09:44 PM
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You should be ok with that spacing, the only place I'd worry about would be the lower control arm, but that back spacing should clear it.
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Old 04-06-2012, 12:53 PM
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Default Thanks bud...

...appreciate your input, just gotta do my shopping around now to source the best price on all the bits and pieces!

Quote:
Originally Posted by CdnoilRAM View Post
You should be ok with that spacing, the only place I'd worry about would be the lower control arm, but that back spacing should clear it.
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