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Hubcentric rings?

Z

zorrex

Enjoys the Abuse
Joined
Mar 26, 2007
Messages
11,840
Location
South Amherst, MA
Did a search here for hubcentric rings and came up with pretty much NOTHING. Does anyone know what size I need and where I can get them from? Right now my wheels are just centered about the lugs, using those acorn-style nuts... :shrug:
 
blu_fuz said:
Got hub rings on ebay. Just a FYI for someone looking for some, listed below is a pretty standard wheel bore size for after market wheels and the hub dimension of our cars.

Outside Diameter (Wheel Bore Size): 72.62mm
Inside Diameter (Vehicle Hub Size): 63.40mm
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^ something I posted
 
blu_fuz said:
^ something I posted
Click to expand...

Edit your post to include "centric" so I can find it next time. :laugh:

J/k, thanks Joe!

I already sent an e-mail to the wheel manufacturer to get the wheel bore size, as I'm not sure how to measure it myself. Hopefully I can order these soon :)
 
Harrry said:
owned :laugh:

Get on the ball Ian!
Click to expand...

Well I'm sorry he didn't use proper wording in his original post! Now if someone searches "hubcentric" they will come up with this thread :p

I'm still waiting on word from Roh as to the bore diameter. Anyone know how to properly measure bore diameter on a wheel?
 
Heard back from Roh. Sales guy said the bore is either 72 or 76 mm. Must have been 76 for the 5-lug version and 72 for the 4-lug. Appreciate the help guys :laugh:
 
this might be a dumb question, but whats the point of hubcentric rings? my enkies had them for the focus it came off of and they were too tight on my hubs and made me have to get the wheels off with a hammer, so I knocked them out of the rims and just mount them with the lug nuts right now, but the guy at my tire shop was trying to sell me a set and it got me thinking about them again.
 
Hub rings are usually not universal from one platform to another. It takes the weight of the car and puts it on the center hub instead of the wheel studs. Our cars are not desiged to be "lug centric" they are "hub centric".
 
From the reading I did, there is no such thing as "lug centric." All vehicles are hub centric, and require wheels to bear the weight on the hub and not the lugs.
 
Technically not called "lug centric" but that is the best I could describe it. The application of the cars weight is on the lug/wheel studs instead of the hub. There are wheels out there from the factory that are not hub centric but I don't have the time to search for something like that.
 
Well, good question. The composite used for the plastic ones is a very hard material. The metal ones are aluminum.

I have had both and couldn't tell a difference. The metal ones look better, but who sees them besides yourself..... I couldn't tell you for sure which is better.
 
Composite probably wont be as likely to gall together with the wheel or hub. I've had to smack metal spacers loose before.
 
there is some false information in this thread. being hubcentric does not mean that the weight of the car is taken by hub. this is completely false. if this was the case, someone explain how a plastic ring is taking the weight of a car?

further more, since our cars use tapered lug nuts, this is what is governing the location of the wheel. Since our cars are hubcentric, it means the hub is centered WITH the lugs, not INSTEAD of. Meaning, if installed with the proper sequence, hubcentric rings are not required even if the hub bore on the wheel is larger than the hub on the car. The weight of the car is held by the friction created by the clamping force created by the torque of the lug nuts, it is not resting on the hub OR the studs
 
turbo_fox said:
there is some false information in this thread. being hubcentric does not mean that the weight of the car is taken by hub. this is completely false. if this was the case, someone explain how a plastic ring is taking the weight of a car?

further more, since our cars use tapered lug nuts, this is what is governing the location of the wheel. Since our cars are hubcentric, it means the hub is centered WITH the lugs, not INSTEAD of. Meaning, if installed with the proper sequence, hubcentric rings are not required even if the hub bore on the wheel is larger than the hub on the car. The weight of the car is held by the friction created by the clamping force created by the torque of the lug nuts, it is not resting on the hub OR the studs
Click to expand...

Logically, I agree with everything you've said. However, with a bunch of reading I did when this whole ring thing came about for me, I found lots of contradictory information from other "reliable" sources (of course, I can't remember where/what I read specifically). All I know is I'm going to pick up a set of rings, and see if the minor vibration I have goes away. I'm coming to the conclusion that the ONLY thing rings do is to minimize vibration by helping to center the wheel just a bit better.

EDIT: Additionally, I wasn't talking about bearing the weight of the vehicle, I was referring to the installation of the wheel and that the wheel should be bearing on the hub to stay centered while tightening the lugs, rather than depending on tightening the lugs to center the wheel.
 
Good info, but - I have put wheels on with tapered lug nuts and have had horrible wobble that was corrected with hub rings so using just the lug nuts with no hub ring is not entirely true either.

Really the rings do just center the wheel on the hub to minimise vibration, but the also take a lot of the lateral pressure off the wheel studs in extreme cases.

Still good info and I would never use a wheel that wasn't hubcentric or at least had a hub ring.
 
zorrex said:
Logically, I agree with everything you've said. However, with a bunch of reading I did when this whole ring thing came about for me, I found lots of contradictory information from other "reliable" sources (of course, I can't remember where/what I read specifically). All I know is I'm going to pick up a set of rings, and see if the minor vibration I have goes away. I'm coming to the conclusion that the ONLY thing rings do is to minimize vibration by helping to center the wheel just a bit better.

EDIT: Additionally, I wasn't talking about bearing the weight of the vehicle, I was referring to the installation of the wheel and that the wheel should be bearing on the hub to stay centered while tightening the lugs, rather than depending on tightening the lugs to center the wheel.
Click to expand...

well, yes, in the case of installation, the rings do center the wheel. BUT, if you follow the correct installation procedure, the taper on the lug nuts will do the exact same thing. Think of it this way, say you have hubcentric rings, and your wheel is perfectly centered. IF by chance your lugs were not centered, how would you be able to correctly torque the tapered lug nuts? You wouldnt, without gouging out the aluminum. the point of the taper is to center the wheel. The only time hubcentric rings are absolutely required are when you are using shank style lug nuts.
 
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