Personally, I would never run a set of wheels without hubcentric rings. They always end up increasing the load on the lug nuts and I have personal knowledge of how much a PITA changing broken or stripped wheelstuds.

A hub ring ensures that even after torqueing that the wheel doesn't move relative to the lugs. Without it, eventually, given enough bumps, the wheel can shift around. What is more important is that you must torque the wheels without weight on them for them to properly center lug-centrically. failure to do so can cause really nasty stuff, like the wheel falling off. Ask me how I know.

 

Guys,

Where can we get hub rings made to Volk CE28N specs out of aluminium???

 

For replacements, a Google search shows some possibilities.
http://www.google.com/search?hl=en&q=hubcentric+ring

Regarding running the wheels without them, I don't think that's an issue. Based on some rough estimates (0.61 for static coefficient of friction between wheel and hub, and 8400 pounds of clamping force from each lug nut tightened to 80 lb-ft) each wheel would require 25,620 pounds of force to simply overcome the friction.

A little plastic ring, or even an aluminum one, does nothing to help hold the wheel in place once it is torqued down properly. They're there only to help align the wheel when putting it on.

Granted, my coeffient could be off, based on material, oxidation and the like. And the clamping force depends on thread pitch, friction, size and stuff.

 

I would like to hear what the dealer of these wheels (Evolution Motorsports) recommend for this application, since they seem to have monopoly power over the US supply of this product.

 

- call MACKIN... I think they're the "VOLK OF THE US"
- EVERYONE has to order volks through them (if in the US) I believe..

 

The hubring is not necessary. It is simply used so that during installation it is centered easier. If you simply put the lugs on in a star pattern tightening each lug a little at a time till you reach the proper torque, then you are fine. In a perfect world every wheel would be made hubcentric so a ring wouldnt be needed, but then the cost would go up terribly because every vehicle would carry its own P/N.