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Looking for info on wheel milling
#1433503 Tue Dec 14 2021 04:09 PM
Joined: Apr 2021
Posts: 8
This may ruffle some purists feathers....I'm just bouncing some ideas around, I have steel 19.5's for my 1 ton dually and I was wondering if anyone has heard of milling them to a 19in rim for more tire options. I know its common for alloy 22.5's to be cut to 22's. I might lower the truck and the shortest 19.5 tire I can find is around 32inches. I'd like to keep the original wheel style.

1957 Chevy 3800
Re: Looking for info on wheel milling
FLOregonian #1433505 Tue Dec 14 2021 04:19 PM
Joined: Feb 2004
Posts: 24,260
Kettle Custodian (pot stirrer)
First, call your insurance agent. You're probably going to need lots of liability coverage for when the wheel disintegrates and you run over a minivan with a soccer mom and a bunch of kids in it. Better increase your life insurance while you're at it, so your family will be cared for if you don't survive the carnage.

All the tubeless tire rims (the ones that end in a .5 measurement) have tapered tire bead seats. Any attempt to flatten the bead seat area on a steel wheel to accommodate a different design of tire bead would end up with cutting the entire bead area off. The thickness of a steel wheel in the bead seat area is 1/4" or less and there's no room for reshaping. Even doing that on an alloy wheel would make it deadly dangerous by thinning the stressed area where the tire bead meets the rim.

"Freedom's just another word for nothing left to lose"
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Re: Looking for info on wheel milling
FLOregonian #1433572 Tue Dec 14 2021 11:38 PM
Joined: Jun 2011
Posts: 4,461
What wheel bolt pattern do you have?


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Looking for info on wheel milling
FLOregonian #1435447 Fri Dec 31 2021 09:55 PM
Joined: Apr 2005
Posts: 2,996
Not possible. You need a decrease in bead mounting surface not the total diameter. The bead surface would have to be turned (not milled) a quarter inch for a half inch total and to my knowledge there is no 1/4" thick steel on wheels till you get into construction,farm, or semi tractor and even on those not in the bead mounting area. A quarter inch thick steel wheel would be heavy indeed.


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