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Old 11-22-2016, 07:33 AM   #1
riz
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Boss 338 offset / back spacing ?

I have an 81 C10 with 4.5 front and 6 rear and want to buy some BOSS 338 wheels with 20x8.5 front and 20x10 rear..... what is the best back spacing for them? Also what size and type of tires do you all recommend to go with them? Pics also appreciated with your set ups.

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Old 11-22-2016, 09:33 AM   #2
bbbc10
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Re: Boss 338 offset / back spacing ?

Thought they only came in a standard backspacing?
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Old 11-22-2016, 09:39 AM   #3
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Re: Boss 338 offset / back spacing ?

I've seen several for our 5x127 pattern squares.

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Old 11-22-2016, 09:49 AM   #4
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Re: Boss 338 offset / back spacing ?

I ran them on a 82 with a 4.5" & 5" drop with 245/45 and 275/45 tires. They only have 1 backspace option best I remember.
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Old 11-22-2016, 09:56 AM   #5
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Re: Boss 338 offset / back spacing ?

Here's a close up that may help with your decision.
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Old 11-22-2016, 10:41 AM   #6
JWall
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Re: Boss 338 offset / back spacing ?

They offer 2 backspacings 5.25 & I believe 4.75 on the 20x8.5's.
I went with the 5.25 back when I had them on my truck.
Worked out great and ordered my billets in the same backspacing.

20x8.5 with 5.25 bs w/ 255/35/20 front & 20x10 with 5.5 bs w/ 275/35/20 rear on both sets off wheels.

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Last edited by JWall; 11-22-2016 at 10:52 AM.
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Old 11-22-2016, 12:16 PM   #7
riz
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Re: Boss 338 offset / back spacing ?

How much lowering do you have on your's Justin ?

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Old 11-22-2016, 01:10 PM   #8
shooter64
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Re: Boss 338 offset / back spacing ?

Quote:
Originally Posted by riz View Post
How much lowering do you have on your's Justin ?

RIZ
Mine are 5.5 front and back same stagger that you're looking for
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Old 11-22-2016, 01:17 PM   #9
riz
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Re: Boss 338 offset / back spacing ?

Nice truck, what back spacing did you get?

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Old 11-22-2016, 01:30 PM   #10
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Re: Boss 338 offset / back spacing ?

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Nice truck, what back spacing did you get?

RIZ
They are 5.5 backspace front and back 20x8.5 and 20x10. I sold them though too many people around here have those
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Old 11-22-2016, 03:29 PM   #11
JWall
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Re: Boss 338 offset / back spacing ?

Quote:
Originally Posted by riz View Post
How much lowering do you have on your's Justin ?

RIZ
The pics with the Boss wheels was around 5/6 drop.

With the billet specialties its bagged with factory inner fenders & factory bed floor.
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