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Old 12-01-2020, 09:36 PM   #1
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Unhappy Help with rims

Okay, I need your expert help again. I now own a nice little 55 ford f-100
that came to me with a newer differential. A 9" ford with 5 on

4 1.25 lug pattern 15 " rims. What the heck is this? I need new rims as the rear rims i have don't center and feel square. The front fits nice but it's a mustang conversion but a kit with no date. Same pattern but centers.Thanks again for the help' Jim.
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Old 12-01-2020, 11:09 PM   #2
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Default Re: Help with rims

Quote:
Originally Posted by [email protected] View Post
Okay, I need your expert help again. I now own a nice little 55 ford f-100
that came to me with a newer differential. A 9" ford with 5 on 4 1.25 lug pattern 15 " rims. ...
What measurement is the bolt circle diameter???
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File Type: jpg 5 lug bolt circle dia. copy.jpg (8.4 KB, 5 views)
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Old 12-01-2020, 11:15 PM   #3
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Default Re: Help with rims

You need one of these. Always have mine for swap meets, etc.
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Old 12-01-2020, 11:22 PM   #4
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Default Re: Help with rims

I'm not clear as to exactly what you mean by "Mustang conversion" so I'm assuming it's the front. 4.25 x 15 Ford rims changed from a small center opening to a larger one. Often front disc brake conversions come with the hub of the rotor turned down to allow earlier wheels to fit. The 9" rears came the same way AFAIK. Sounds to me like you've got mismatch on the center opening. The two above post are correct for measurement and for spacing the wheel out to clear the larger center opening. I've never used spacers for that problem, but if 51540bat is saying it works, ok. I've always bought wheels that would center on the lugs, and made sure there was flat contact to the drum or rotor.

Oops, I just realized he's showing a measuring device, not a spacer. But my comment about the wheel centers stands. And I missed the 4.25 should be 4.5. To many years, I guess.

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Old 12-01-2020, 11:28 PM   #5
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Default Re: Help with rims

While Ford did come out with a 4 1/4" bolt circle on some models a
few years ago, Your 9" rear and Mustang 5 lug front should be 4 1/2".
Measure using the chart that dmsfrr provided for measuring 5 lugs.

Also, you say the center hole on your 9" rear is different then the wheels
you are using. Is that center hole smaller then your wheel center hole ?
I believe it was in '69 that Ford changed the size of the center hole.
Ford changed from 2 3/8" center to 2 3/4" center hole.




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Old 12-02-2020, 10:13 AM   #6
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I upgraded the front brakes on my '54 Ranch Wagon to Grenada Discs. The rotors supplied in the up grade kit were machined down to accept the smaller center hole stock 15" wheels. I then installed an 8" rear end from a Maverick. The register on the new rear end was 2 3/4" so the stock Ranch Wagon Wheels wouldn't fit. I ended up with new 15 inch wheels all around with the larger center hole so down the road I could use a stock Grenada rotor without needing to have it machined down.
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Old 12-31-2020, 10:07 PM   #7
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Default Re: Help with rims

We machined out the center holes so the wheel fit flat against the hub. and viola. That did it. We opened them about 1/8". I still haven't figured what wheels I need. The pattern is 5x 108mm?
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Old 12-31-2020, 10:20 PM   #8
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So are the wheels you opened up the center on, steel or aluminum wheels ?




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Old 12-31-2020, 10:52 PM   #9
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Default Re: Help with rims

When I considered enlarging the center hole on the stock wheels on my Ranch Wagon because they wouldn't fit over the axle registers on the Maverick rear end I installed I posted a question about it on the HAMB. https://www.jalopyjournal.com/forum/...wheel.1206613/
The consensus was not to do it, it would weaken the wheel and lead to cracking.
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Old 01-01-2021, 02:18 PM   #10
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Default Re: Help with rims

Is it out of a Demon? The dusters, and all the other Plymouths and Dodges were different for some reason. Kid I went to high-school with had a demon, and his drag slicks were on Centerlines he had to order from Jegs.
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Old 01-01-2021, 03:11 PM   #11
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Default Re: Help with rims

Most Mopars had the 5 lug x 4.5" bp.
But Mopar also used the 5 lug x 4.0" bp.

Only 1 Mopar that I know of used the 5 lug x 4.25" and that was '90-'92 Monoco.



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Old 01-21-2021, 09:20 PM   #12
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Steel chromed wheels.
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Old 01-21-2021, 09:31 PM   #13
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Default Re: Help with rims

You can open up the center hole on a thicker aluminum wheel somewhat,
and be pretty safe.

When you open up the center on a steel wheel, it is very possible
that the metal will flex and crack from the center hole to the lug holes,
and that is very un-safe.




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Old 01-31-2021, 05:55 PM   #14
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Default Re: Help with rims

Thank you all very much. I'm buying new wheels that fit. Much safer.
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Old 04-16-2021, 04:49 PM   #15
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Yes it's 5 on 4.5"
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Old 04-16-2021, 10:24 PM   #16
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Default Re: Help with rims

try bronco 4 wheel drive. they have the large center hole
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Old 04-16-2021, 11:22 PM   #17
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These are definitely handy little guides to correctly identify the different bolt patterns when you are looking for a wheel with a specific bolt pattern at a swap meet.
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Old 04-17-2021, 07:54 AM   #18
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Default Re: Help with rims

Quote:
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try bronco 4 wheel drive. they have the large center hole

Early Bronco's were 5 on 5 1/2. Not sure about the later ones.
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Old 04-17-2021, 11:09 AM   #19
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Default Re: Help with rims

1982-1990 Bronco II used a 5x4.5" bolt circle wheel.
The small Ranger pickups used that same wheel for most years too.





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Old 04-25-2021, 12:36 PM   #20
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Default Re: Help with rims

What year did F150's go away from the 5.5" bolt circle?
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Old 04-25-2021, 12:59 PM   #21
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Default Re: Help with rims

Ford changed the F-150 bolt circle beginning in 1997.
It was changed from 5.5" TO 5.31".
You Can't tell one from the other by the naked eye.





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Old 04-26-2021, 07:40 AM   #22
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Default Re: Help with rims

Thanks Lanny, I couldn't remember if it was '86 or '96.
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Old 04-26-2021, 04:17 PM   #23
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Default Re: Help with rims

One more thing about identifying F-150 wheels is that in 1997 Ford
quit useing tapered lug nuts on the F-150, so if you see some
F-150 wheels that look like they might fit the 5.5" bolt circle, But
they are NOT tapered around the lug holes, then you just found the
'97-2003 wheels with the 5.31" bolt circle and Flat around the lug holes.





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