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Old 04-01-2013, 09:40 PM   #1
bryan76
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boss 338

just got my 20x10s in and the offset is +2 will these work thought they were suppose to be 20mm the part number is 3387-2085-1-AA
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Old 04-02-2013, 06:46 AM   #2
riz
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Re: boss 338

I thought the offset for rear 20x10s were supposed to be like 5" or something.

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Old 04-02-2013, 11:43 AM   #3
77c10
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Re: boss 338

the offset for my 20"x10" 338's on the rear is 5".
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77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint

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Old 04-02-2013, 12:00 PM   #4
lolife99
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Re: boss 338

5.5" and 6.225" is the only two backspacings, I know of, for the 2010 Boss 338's in the 5x5 bolt pattern.
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Old 04-02-2013, 12:17 PM   #5
77c10
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Re: boss 338

I stand corrected, my backspacing is 5.5".
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77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint

"Cool ain't ever cheap and cheap ain't ever cool"
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Old 04-02-2013, 03:56 PM   #6
bgarr01
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Re: boss 338

I believe I went with the 6.25 back spacing on mine.
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Old 04-02-2013, 06:22 PM   #7
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Re: boss 338

I was incorrect as well. It's actually 5.5 back spacing.
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