Wheel question - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 05-02-2008, 06:59 PM Thread Starter
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Wheel question

Hey, i have a set of aluminum aftermarket wheels on my truck, im trying to get new ones, the only thing i know about the current ones is that they hold a 35x12.5xR16.5 BFG a/t. I saw some wheels on jegs that are made by "Ion Alloy" they're called series 171 (black inside with the polished aluminum lip, kinda look like alcoas) They have 15 and 16" diameters and 8" and 10" widths. and it says "-38mm offset". From my understanding the offset is the centerline-backspacing so if its a 10" wheel thats a 3.5" backspacing?
Basically im curious if one of these Ion 16x10 or 16x8's with -38mm offset will fit my OBS straight axle F350 that previously ran 35x12.5x16.5 BFG's? anyone have any info that could help me understand wheel fitment or figure out if they'll work?
thanks a bunch

1997 F350 Reg. Cab/ long bed
AFE stage 2 intake
3" Downpipe to about 5' of 3.5"
Eventually gonna get some stacks and maybe a chip...

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post #2 of 4 Old 05-02-2008, 07:19 PM
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Yes they will fit. The 16.5 rim is aftermarket already. The stock size is a 16x8 rim. If you go to a 16 inch rim you will have a lot more tires to select from.

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post #3 of 4 Old 05-02-2008, 07:29 PM

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I have some info in this link...scroll down, about halfway through

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post #4 of 4 Old 05-03-2008, 07:11 AM
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16.5" are very old school and I'd wouldn't use them since they haven't a safety bead. Also any rim for a OBS or a SD should be rated at least 3k lbs IMO.

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