Will I need hub rings for my Enkei RPM2's on a MazdaSpeed 6? - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 7 (permalink) Old 03-01-2010, 05:08 PM Thread Starter
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Will I need hub rings for my Enkei RPM2's on a MazdaSpeed 6?

Guys, the center bore on this 2006 MazdaSpeed6 is 67.1mm. If my research is correct, the Enkei RPM2 wheel has a bore of 72.62mm.

Do I need to purchase a ring to get the best fitment here?

If I don't put on a ring, do you think I can get away with putting these rims on? The wheel shop just tells me I might get a bit of vibration at high speeds.

Thoughts? Comments?

Thanks all.

Last edited by bguild; 03-01-2010 at 09:11 PM. Reason: Enkei Wheel bore size is actually 72.62mm, not 73mm
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post #2 of 7 (permalink) Old 03-01-2010, 06:45 PM
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There are rings that are like a tapered cone that's pretty much universal. I don't know where you can get them though. My rings are like that and they came with the wheels when I got them from TireRack.

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post #3 of 7 (permalink) Old 03-01-2010, 09:08 PM Thread Starter
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Found the Hubcentric Rings, and check out Gorilla lugs as well

Here are some good resources on Hub Centric Rings if it ever comes up again guys. I order the Gorilla part # 72-6710 for my Enkei RPM2 wheels via Amazon, and they will be here in 2 days.

Gorilla Automotive Products - Lug Nuts, Wheel Locks, Auto Security, Wheel Accessories

Detroit Wheels Hub Centric Rings - JEGS

On a side note, I believe Gorilla makes some of the best lug nuts in the business. Mazda lug bolt is 12mm x 1.5 and the Gorilla part # for the 20 piece "small diameter tuner lug" set is 21133HT. Nice, high quality, stainless steel splined lugs with a special tool to ensure no rim damage during installation or removal.

Gorilla Automotive Products - Lug Nuts, Wheel Locks, Auto Security, Wheel Accessories
Gorilla Automotive Products - Lug Nuts, Wheel Locks, Auto Security, Wheel Accessories
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post #4 of 7 (permalink) Old 03-01-2010, 09:11 PM
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I've never used hubcentric rings and I've never had an issue.

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post #5 of 7 (permalink) Old 03-01-2010, 09:15 PM Thread Starter
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Quote:
Originally Posted by Egierda View Post
I've never used hubcentric rings and I've never had an issue.
but you do understand from an engineering standpoint what is happening without the rings right? I only know from doing the research today that without the rings, you are putting undue stress on the studs, which could lead to premature failure.

Unlikely, yes, but I'll spend the $8 for the peace of mind.
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post #6 of 7 (permalink) Old 03-13-2010, 01:34 AM
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Not sure if you're the same dude from the other forum, but... Where are you getting the RPM2s from? How much? And pics would be real swell too...
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post #7 of 7 (permalink) Old 02-24-2011, 09:54 AM
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Quote:
Originally Posted by bguild View Post
but you do understand from an engineering standpoint what is happening without the rings right? I only know from doing the research today that without the rings, you are putting undue stress on the studs, which could lead to premature failure.

Unlikely, yes, but I'll spend the $8 for the peace of mind.
Thread revival: I read somewhere that centering rings are used as an aid for proper installation and doesn't really serve any purpose after the lugs have been torqued correctly and in the proper sequence. I guess they do help somewhat if at least one of the lugs aren't on tight enough?
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