Hub Centric Ring Help
 

I need hub rings for a set of wheels I purchased, but Im not sure what size I need. Could someone explain how I go about finding the size? They're 16x8 going on an FC.

FC hubs are 59.6mm, find a hub ring with that inside diameter and the outside diameter of the hub bore on your wheels. If you can't find it published, just measure them with a digital caliper.

ok, thanks.

They're kind of nice to have, but you don't actually need them.

The wheel is centered by the lug nuts.

Or maybe you already knew that, didn't say in your post.

I did a lot of research on this before proving to myself that you don't need hub centric rings. There are plenty of arguments on both sides but the best forum read I've found was here:

http://www.eng-tips.com/viewthread.c...=152939&page=1

Now, if you have a vibration issue because one of your lugs gets jacked up that's a separate question and a HCR might be able to help get the wheel aligned better in the first place. It certainly can't carry any real load thereafter. That has to be done by the friction in the joint being clamped.

Unless you've got a set of bore micrometers you're out of luck if you insist on running rings and you can't find wheel specs published. Most calipers won't fit unless you find some real shorties. The depth measuring part on your standard 6" cal interfers with the wheel perimeter so you can't get it in there. (Ask me how I know) :-)

Ok, the wheels I'm looking at have a hub bore of 56.1
I believe the stock FC size is 59.6

I was looking up hub rings at 1010Tires and I was wondering which is the Outside Diameter and which is the Inner Diameter? Because it doesnt look like they would fit...

Won't fit as is, but you could take the wheels to a machine shop and have them make the centerbore match the stock FC dimension.

If you are going to be using a spacer with them then hub rings are irrelevant, since they won't reach the wheel anyway.

If I can run a 17x8 +35 without spacers then I will. How much does a job like that cost?

Depends on the shop, ask around.

Ok, about the spacer option if I was to use a 5mm spacer i wouldn't have to worry about hub rings as long as the spacer was the right bore size?

Spacers don't really have a center bore size in that way, they're made to fit over any hub, so they've got a very large centerbore and they have no lip on them like the stock hubs do.

5mm is probably enough to cover the hub lip sufficiently to allow the wheels to bolt on, but a quick measurement would be advisable to be sure. A 1/4" spacer is ~6mm, and you can get them from Summit Racing, or a local auto parts store most likely, and they're quite cheap. You could spend a lot more on some fancy metric ones, but there's really no point.

Ok, I'll check into those.
Thanks for all of you help! :D