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Old 02-10-2005, 03:37 PM   #1
NOTimprezed
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Default need info on hub centric ring size

so i got a set of RO_JA LT5 wheels. came from the manufactures factory with 1 bent rim and no hub-centric rings. fixed the bent rim, but now need the ring.

does any one know the ID and OD of the required hub-centric ring?

thanks in advance
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Old 02-10-2005, 04:00 PM   #2
NTP WRX
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The inner diameter of the ring is equal to the outer diameter of the hub. I believe it's 56.1mm for the WRX, but I'm not 100%. As for the outer diameter of the ring, it will be equal to the inner diameter of the hole in the middle of your wheel. I can't tell you what it is as I know nothing about those wheels. Sorry.

That said, both of these dimensions can easily be determined using a micrometer, caliper or other precision measuring device. A ruler might even be good enough, but it would be more difficult to be certain you've measured through the center.

Neil.
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Old 02-10-2005, 04:07 PM   #3
NOTimprezed
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thanks for the reply. i'm lacking the micrometer, which is why i posted. i wanted to run into a store and buy a set, but without the proper measuring tools, i might waste more time than do any good.

also, the factory hub center seems tapered. either the new rings all come at a taper, or the hub centric rings actually only sit on the widest section on the hub center?
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Old 02-10-2005, 06:55 PM   #4
nhluhr
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I measured the hubcentric diameter for Rota a few months back:

pretty much dead on at 56.0 mm:

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Old 02-10-2005, 07:58 PM   #5
NOTimprezed
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i went and bought a set at a wheel shop. the OD was 73mm. as stated by nhluhr, the ID was 56mm. i read on this forum that the function of the hub centric ring was to take the load of the car. the hub centric rings i bought were plastic.... i would not think they would be good for anything than to help against vibration.
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Old 02-10-2005, 08:09 PM   #6
nhluhr
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well they don't take the load of the car - they just make sure the wheel is perfectly centered on the hub so that when you torque the lugnuts down, they get tightened with the wheel centered instead of with the wheel offcenter.
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Old 02-10-2005, 10:20 PM   #7
esteve
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Quote:
Originally Posted by NOTimprezed
i went and bought a set at a wheel shop. the OD was 73mm. as stated by nhluhr, the ID was 56mm. i read on this forum that the function of the hub centric ring was to take the load of the car. the hub centric rings i bought were plastic.... i would not think they would be good for anything than to help against vibration.
How do those rings work, is it a nice snug OEM-like fit? Just wondering because I always thought the manufacturer should provide the hubcentric rings and I might have to go this route myself if I get some Enkeis.

I wouldn't worry about the rings being made of plastic, many high-end wheels companies use them too (Ronal, AC Schnitzer, Brabus, etc).
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Old 02-10-2005, 11:37 PM   #8
rota wheels wrx
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Quote:
Originally Posted by nhluhr
I measured the hubcentric diameter for Rota a few months back:

pretty much dead on at 56.0 mm:

Hey,

I still owe you. The boosts are in if you still want em
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Old 02-10-2005, 11:41 PM   #9
ripvw
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Hey, rota wheels wrx: can you post the weights of the various Rota 17x8 5x100 wheels, assuming there's much of a difference. All about 18lbs or so?

by the way - loving my Attacks

just thinking of future applications...
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