I recently traded off the 16.5s from my 78 k30 to a guy with a 2001 Dodge 3500 for his 16s (he had surplus 37" humvee tires that he needed 16.5s for). Knowing that the Dodge had the larger hubs and they would have to machined to fit his.

So his wheels fit my truck great...but my truck is hub centric, so there is some vibration because of the difference in hub diameter, so I need to find some hubcentric rings. Does anyone know a good place for them? All I can find are small ones. I have not gotten down with my calipers to measure them yet (I will before ordering), but the Chevy should be like 4.5" and the Dodge just over 4.75" right?

Also a side note, I noticed the Dodge wheels have almost an inch more backspacing, so there is tons of room between the 235/85s so I may have to step up to 255/85s or 265/75s soon. :cool:

Your vibration is most likely from an unbalanced tire, bent wheel or other issue rather than the non-hubcentric wheels. Let me ask you this simple question, how do millions of Dodges drive around with no vibration if they are non-hubcentric?

The truth of the matter is that the wheels are located by studs, the hub centering the wheels is just to aid in stabing the wheel on quickly on the assembly line. In order for this locating lip to bear any load the fit would have to be a near press fit and the lugs could not have a tapered seat. The only thing you have to do with non-hubcentric wheels is lightly snug all the lugs first before you torque them down. There is a chance that you could bolt the wheel on off center if you torque down 1 or 2 lugs first then do the rest. If you snug them all up by hand first the wheel will be located in the center of the hub.

Your vibration is most likely from an unbalanced tire, bent wheel or other issue rather than the non-hubcentric wheels. Let me ask you this simple question, how do millions of Dodges drive around with no vibration if they are non-hubcentric?

The truth of the matter is that the wheels are located by studs, the hub centering the wheels is just to aid in stabing the wheel on quickly on the assembly line. In order for this locating lip to bear any load the fit would have to be a near press fit and the lugs could not have a tapered seat. The only thing you have to do with non-hubcentric wheels is lightly snug all the lugs first before you torque them down. There is a chance that you could bolt the wheel on off center if you torque down 1 or 2 lugs first then do the rest. If you snug them all up by hand first the wheel will be located in the center of the hub.

No the tires are brand new, no problems with balance, no bent wheel, this is a Dually-therefore the original wheels were hubcentric for ~4.5" hub, and the new wheels are hubcentric for ~4.75" hub, they are not lug-centric, therefore the lug does NOT locate the wheel i.e. the lugs are flat with washer, not conical, no tapered seat, and yes it is a "slip fit" (not press fit) onto the hub, i.e. there is just a few thousands clearance between them, had to be knocked off by kicking the tire from behind on both trucks. Trust me I know all about torquing the wheel down properly before putting weight on the tires.

And the millions of dodges drive around because the wheels are hub-centric for their larger hubs, they are in no way lug centric with the flat washer lug nuts they use.

Thanks for your idea though, it makes complete sense for wheels with conical seats, but I'm sure you just missed the part that its a dually.

Anyway anyone know some good places for hubcentric rings? I measured them this weekend and got just under 4.5" for the Chevy hubs, and just over 4.75" for the Dodge wheels (measured with ruler, left my calipers on my desk at school) I found plenty of hub centric rings, but none with these dimensions, best I found was 4.92" outside and 4.5" inside, I guess if I had to I could turn them down on a lathe.

Thanks

Sorry about that, I just got my head out of my ass and realized that dually's use the washers under the lugs........please disregard.

The Chevy center bore is 4.56" and the Dodge is 4.77". The hub and wheel are designed to bring the weight and pressure to the center bore. The vibration you are filling is your wheel chipping away at your studs or your studs are unable to carry the load, due to the fact they are not built to carry weight. Eventually a nut will fall off or a stud will break.

The Chevy center bore is 4.56" and the Dodge is 4.77". The hub and wheel are designed to bring the weight and pressure to the center bore. The vibration you are filling is your wheel chipping away at your studs or your studs are unable to carry the load, due to the fact they are not built to carry weight. Eventually a nut will fall off or a stud will break.

Thank you for the exact measurements, since I left my calipers on my desk when I measured, but for the rest you stated the obvious I had already stated in the 1st post, but the Vibration is in no way coming from "chipping away" at the studs as the wheels were properly torqued down. The vibration is coming from the wheel being slightly off center, in order to reduce the chance of putting the load on the lugs I raised tire up while torquing the lugs to get as close to center as possible then torqued them down, drove 50 miles home, and pulled one wheel back off to measure the hubs, and they were still properly torqed (as were the rest, I checked), with no flattened threads on the studs, but in any case I am not intending to use the truck until I get the rings this thread is about.

Seeing as you are a vendor on this site for what looks like a wheel company, do you have any insight to my actual question?

Thank you

Sorry thought it was a one ton dual.

Sorry thought it was a one ton dual.
It is a 78 1ton Dually, I just need a set of rings with 4.56 ID and 4.77 OD, preferably steel that I could slip over the Chevy hubs, tack in place, and then slip the dodge wheels over and bolt down, therefore centering the wheel properly, and taking any possible load off the lugs. I would even take something close that is either oversized on the OD or undersized on the ID and turn them down on the lathe, I just don't have access to any stock of anything close to those dimensions.

Find a machiene shop to make them for you. Would only take about an hour if they stopped to smoke a cigarette between each one they made...

Find a machiene shop to make them for you. Would only take about an hour if they stopped to smoke a cigarette between each one they made...
Exactly my point about possibly buying some a bit oversized and turning them down on the lathe, I just don't have any material lying around that size, and would not really be worth it to buy any although I may have to go that route.