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Which way should I go with this situation???

  • Use the Pioneer set that I have (see below)

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86 350 4x4 Wheel stud sizes....

5212 Views 10 Replies 4 Participants Last post by  farmer002
Can you change the stud size on them? I want to put factory wheels and tires from my Pioneer 700 on my 350. The holes/studs on the Pioneer are larger although the nuts do seat pretty good on the 350.

My 1st thought is maybe spacers have this option but I can't go any wider on the front and the rears would need 2" or so to be even.
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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..?

Hmm, maybe not a spring project since I am running out of time before planting gets here. But since I do have a parts machine with hubs...I'll have to give it a try.

You are correct about the two inches. The Pioneer wheels will need 2-2.5 in the rear.
Option 1... WIDER ITP wheels that need one complete wheel replaced and four new tires...


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Option 2....
Pioneer wheels and tires which would require larger diameter studs and 2inch spacers in the rear.


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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.
I should have been more specific or maybe I'm just not following you.... The Pioneer studs are thicker/larger diameter. Meaning the Pioneer wheels have larger holes than stock or the ITP's.

I see what you're saying about the length though. I know that I never actually tightened anything down. Just zipped em on for the photo op.
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.
Interesting... I think I've seen something like that at Rocky Mountain Atv... Like you I'd be nervous of them unless proven otherwise.
So far the ITP's, with new tires and a replacement wheel are winning the poll. I'm with you guys going that route but my wallet (paypal) needs the 300 sold before this is even a consideration. :)
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