86 350 4x4 Wheel stud sizes....

retro said:

I would guess that you could drill the hubs out larger to fit bigger studs. The front hubs separate from the brake drums once those are both off, and the rear hubs pull right out after taking both castle nuts off from the axles. So it should be easy to do on a drill press. You'd need studs with short heads on them.

The rim offsets on the old 350s differ greatly from front to rear though... maybe as much as 2 inches..?

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Jeepwm69 said:

Farmer, I noticed that running Rubicon Aluminum wheels on my Foremans that the lugs don't poke out as far. The Rubicons use acorn style lug nuts with a covered end, while the Foreman uses open ended lug nuts. Screwing the open ended lugnuts onto the studs with the aluminum wheels leaves the end of the stud just flush with the lug nut, while with the steel wheels the stud poked out a bit.

Are the lugs on the Pioneer wheels actually recessed with the lug nuts tightened all the way down? They look about like mine do with the Rubicon wheels on them. I've been running them like that for 7-8 years with no problems at all. Get you some acorn lug nuts like the Rincons and Rubicons have and run it.

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SamUK said:

The pioneer will have M12 studs, not a lot you can do to get them to centre on your ATV unless you have nuts made. I have seen tapered washers available at auto sports outlets in the past, it’s an option but I wouldn’t want to be riding miles relying on washers holding my wheels on.

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