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04-24-2017, 09:26 AM | #1 |
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Enlarge wheel pilot hole
I have an 8" rear and disc brakes front that require a 2 3/4 pilot hole in the wheels. I measure the stock pilot hole to be 2 5/8". Aftermarket wheels seem to center with the lug nuts. Can these original wheels be opened with a die grinder to clear the hubs and rely on the lugs to center them? Are there later Ford wheels with similar backspacing and larger pilot bore? Thanks for any tips. Gene
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04-24-2017, 11:56 AM | #2 |
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Re: Enlarge wheel pilot hole
I would NOT remove metal from the center hole.
Most all wheels for medium and full size Fords made in 1968 or 1969 and newer have the 2.75" center hole. .
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04-24-2017, 06:33 PM | #3 |
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Re: Enlarge wheel pilot hole
I had new Granada hub/rotors turned down to fit the wheels. There is plenty of meat on the hub, so that little bit didn't hurt at all.
Last edited by Ole Don; 04-25-2017 at 07:58 AM. |
04-24-2017, 06:38 PM | #4 |
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Re: Enlarge wheel pilot hole
That is what was recommended by racer dave. My rear is an 8", so the axle stub is 2 3/4" also. I haven't found an aftermarket wheel yet with enough backspacing. I'm still looking.
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04-24-2017, 07:58 PM | #5 |
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Location: Kent, WA. Tucson, AZ
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Re: Enlarge wheel pilot hole
You might try these guys. Some years ago they put 55 ford centers in 7" rims for me, 4" backspace to mount a set of 10" cheater slicks. At that time they were also pretty knowledgeable about what centers or rims would let you mount the original hubcaps, or whatever you're using. Still worth a phone call.
http://www.thewheelsmith.net We've also got a couple local guys who do wheel repair on new fancy wheels when you hit a curb and bend them. The one near me does a lot of dealer work on trade ins. But he can also relocate the center in the rim for the correct backspace. He's all set up to check the run out and do it right. How much backspace do you need? |
04-24-2017, 08:27 PM | #6 |
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Re: Enlarge wheel pilot hole
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04-25-2017, 12:47 PM | #7 |
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Re: Enlarge wheel pilot hole
Isn't that a 10" wide tire? Sounds like an 8/8.5 tire would fit better.
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04-25-2017, 01:07 PM | #8 |
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Re: Enlarge wheel pilot hole
I think offset and backspace are measured from the bead surface, not the outer rim. As well as wheel width. You might double check that before you order anything.
Also, if the front suspension is what I think it is, 3 1/2" front backspace is the most you can use and clear the upper ball joint. The picture below is the upper ball joint and a 225/60 15, 3 1/2" backspace. There's a ball joint mod, but it didn't effect this measurement. Hmmm, won't let me attach the photo. Last edited by miker98038; 04-25-2017 at 01:16 PM. |
04-25-2017, 01:19 PM | #9 |
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Re: Enlarge wheel pilot hole
Upper ball joint.
Last edited by miker98038; 04-24-2018 at 06:24 PM. |
04-25-2017, 02:58 PM | #10 | ||
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Re: Enlarge wheel pilot hole
Quote:
Quote:
Last edited by 40cpe; 04-25-2017 at 06:41 PM. |
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04-25-2017, 06:43 PM | #11 |
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Re: Enlarge wheel pilot hole
wheel measuring image
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04-25-2017, 07:21 PM | #12 |
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Re: Enlarge wheel pilot hole
I stand corrected. Been a while since I measured any wheels. It's "offset" only that measures off the rim width.
https://www.tirerack.com/wheels/tech...jsp?techid=101 |
04-25-2017, 07:23 PM | #13 |
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Re: Enlarge wheel pilot hole
we all need a refresher at some time
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