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Educate me on wheels and sizes

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Old Jul 24, 2012 | 09:07 PM
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Default Educate me on wheels and sizes

I see some....

16X8 5-4.5 12B

Can't find the back spacing though. What does 12b mean?
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Old Jul 24, 2012 | 09:08 PM
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link to said wheels?
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Old Jul 24, 2012 | 09:09 PM
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Originally Posted by LongArmXJ
link to said wheels?
Opps.
http://www.discounttire.com/dtcs/fin...6139&rc=LAIINT
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Old Jul 24, 2012 | 09:21 PM
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Back spacing looks to be 5"?
http://www.uniquewheel.com/scripts/s...ies=Series_297

I think this is it as well

Bolt Pattern: 5 x 4.50
Thread Size: 1/2"
16" x 8" - +13 mm Offset
Backspacing - 5.00"
Lug Styel: Coni Seat / Acorn Lug

Last edited by CrawlerXJ; Jul 24, 2012 at 09:31 PM.
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Old Jul 24, 2012 | 09:30 PM
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and thickness of your tires? I'd only ever get 15x8 3.75"BS or 4"BS wheels
the ones you're looking are basically a stock size rim. I'm pretty sure stock BS is 5" anyway. kind of a waste of cash to get those ones
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Old Jul 24, 2012 | 09:35 PM
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Originally Posted by Atmos
and thickness of your tires? I'd only ever get 15x8 3.75"BS or 4"BS wheels
the ones you're looking are basically a stock size rim. I'm pretty sure stock BS is 5" anyway. kind of a waste of cash to get those ones
Tires are 265/75/16 Which is the brand I want. Doing wheels and tires, same time.

Lift says 4.75" BS is max? Why? Control arms?

Last edited by CrawlerXJ; Jul 24, 2012 at 09:50 PM.
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Old Jul 24, 2012 | 11:01 PM
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Originally Posted by CrawlerYJ
I see some....

16X8 5-4.5 12B

Can't find the back spacing though. What does 12b mean?
As I'm reading it:

16x8 - 16" wheel nominal diameter, 8" between bead seats (allows for wider tyres)
5-4.5 - 5 lugs, 4.5" bolt circle.
12 - I'm checking the linked page (and the links off of that page,) it looks to be the wheel offset, but I don't see how it's being measured.
B - Black finish.

"Offset" and "backspacing" are somewhat related.

"Backspacing" is the relative distance between the rear face of the wheel (vehicle side) and the wheel mounting surface (WMS) - measured by laying a straightedge across the inner flanges and then measuring to the WMS. This value is always positive.

"Offset" is the location of the WMS relative to the centre plane of the wheel. This value may be positive, negative, or zero. A "zero offset" indicates that the WMS is coplanar to the centre plane of the wheel, a "positive" offset puts the WMS on the "street side" (as they put it) of the wheel, while a "negative" offset moves the WMS toward the vehicle (making the outer wheel appear deeper.)

I'm sure they use a standard value for each increment of wheel offset, I just don't know what it is. Could be millimetres, centimetres, eighth-inches, quarter-inches, half-inches, or whatever. So, an offset of "12" could be 12m/m, 12c/m, 12x1/4" (three inches,) 12x1/2" (six inches) - I don't know, and I'd probably be emailing them to ask. I don't like specs I don't understand.
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Old Jul 25, 2012 | 01:04 PM
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Vendor order another set. 4.5" BS
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