Will these wheels fit here?
Will these wheels fit here?
Could one put a 5x120 et20 7" wide wheel with a center bore for an E28 (72.5mm) on a 5x120 et0-15 with a center bore of 70.3mm? It's a 97 Chevy S10 if anyone cares.
It sounds like a math problem. I guess it kinda is.
Sorry I haven't completely figured out wheels yet.
It sounds like a math problem. I guess it kinda is.
Sorry I haven't completely figured out wheels yet.
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Kyle in NO
- Posts: 17638
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- Location: Nasty Orleans------> Batten-Rooehjch------>More Souther LA
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rollcentre
- Posts: 354
- Joined: Nov 30, 2012
- Location: Dallas tx
I have GM "5 on 4-3/4"on my car now. These particular wheels bolt up very well. I am not sure if all GM wheels will work as well, as there technically is a .65 difference in B.C.D.
I opened up the centerbore (by .050 or so?) to work with the BMW hub. Now they are hubcentric. I also did a wheel stud conversion.
I opened up the centerbore (by .050 or so?) to work with the BMW hub. Now they are hubcentric. I also did a wheel stud conversion.
I'm a little confused by your offset description, but assuming it's close I'll chime in anyway.
It's heresy, but it'll work. And if you torque them down very slowly and progressively they should be fairly close to hubcentric. Even if they aren't I've seen tires off by more than .065". Check wheel torque regularly at least for a while since the lugs won't be seated properly being offcenter, but it should work. I probably wouldn't do it myself and I'm no purist, my money says it'll work.
It's heresy, but it'll work. And if you torque them down very slowly and progressively they should be fairly close to hubcentric. Even if they aren't I've seen tires off by more than .065". Check wheel torque regularly at least for a while since the lugs won't be seated properly being offcenter, but it should work. I probably wouldn't do it myself and I'm no purist, my money says it'll work.
It's .65 mm or .025" off and will fit but it's not proper. While most will say BMW wheels are hub centric they are really both hub and bolt centric as a lot of wheels are. I imagine the wheels you are describing are similar and that little bit means it will bolt up but you really should have a special wobble bolt to handle that small difference in the bolt circle diameter.
I would be afraid the BMW bolts would eventually stress and potentially snap the head off. Tightening and loosening will produce a circular bending motion. Studs should fare better but still not right and they will bend, just not rotate and bend.
You should be using wobble bolts or wobble nuts if the BCD is not the same.
I would be afraid the BMW bolts would eventually stress and potentially snap the head off. Tightening and loosening will produce a circular bending motion. Studs should fare better but still not right and they will bend, just not rotate and bend.
You should be using wobble bolts or wobble nuts if the BCD is not the same.
While I see where you guys are going with the wobble bolts, I think it would make things worse here. It looks like he's got a hub that's ~2MM smaller than the wheel hole so no telling where the wheel would end up in a concentric sense. Or maybe loosely torque it with regular lugs on 3 or 4 spots, tighten the wobble bolts one by one to keep it centered. Then again since BMW doesn't use steel inserts in the aluminum, maybe they would kind of dig their own hole.
Again, I think it would work but I wouldn't do it except for a parts car or storage.
Again, I think it would work but I wouldn't do it except for a parts car or storage.
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My528e.awesome
- Posts: 778
- Joined: Feb 08, 2011
- Location: Roseville, CA
On the issue of Chevy bolt circle, I've run Chevy wheels on my CS without any problems. Remember that any individual stud or bolt on the circle is only off by half of the difference between BMW and Chevy bolt circles ... Less than 0.013" . Think about radius vs diameter. That's less than the slop in the thread fit and likely similar to the tolerance for machining the bolt circle on wheels and hubs. I wonder what the manufacturing tolerance is on wheels?

