Hub/Centring Rings

crosbyblue · 03-09-2023, 06:45 PM

Hello,

I have a set of RTX Graz 18" wheels for my E92 that makes my wheel shake at higher speeds.

The previous owner told me I might need to get some hub rings, and upon further investigation it seems that the wheel bore is 72.6, while the hub bore is 72.56. Is this enough to make a difference, and where would I even find rings that are that close in diameter?

I know it's not my suspension because on my OEM wheels, there is 0 shake whatsoever at high speeds.

Any help would be appreciated!

Serf27 · 03-09-2023, 10:32 PM

So the difference is .04mm?

Have you balanced the wheels and seen them while being balanced to see if they are true/straight?

codeterrorist · 03-10-2023, 11:54 AM

Hubcentric rings are crap. I had aftermarket rims that had like a 0.something mm and it was a horrible drive on high and even moderate speeds.
I was afraid I would damage something so I immediately turned around and had them install my old rims.

Not only that, but getting those rings on was so frustrating for the tyre shop too. They kept breaking every time they try to mount the rims. So imagine if you need to take off the rims for whatever reason; you will most likely need to replace every time.

Best to get OEM rims. Skip the trouble. That's my opinion.

03-09-2023, 06:45 PM	#1
crosbyblue Enlisted Member 12 Rep 35 Posts Drives: E92 335xi Join Date: Oct 2021 Location: Canada iTrader: (0) Garage List 2011 BMW 335xi [0.00]	Hub/Centring Rings Hello, I have a set of RTX Graz 18" wheels for my E92 that makes my wheel shake at higher speeds. The previous owner told me I might need to get some hub rings, and upon further investigation it seems that the wheel bore is 72.6, while the hub bore is 72.56. Is this enough to make a difference, and where would I even find rings that are that close in diameter? I know it's not my suspension because on my OEM wheels, there is 0 shake whatsoever at high speeds. Any help would be appreciated!
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03-09-2023, 10:32 PM	#2
Serf27 Brigadier General 2851 Rep 4,322 Posts Drives: 335i Join Date: Apr 2018 Location: Sitting in a BMW. iTrader: (-1)	So the difference is .04mm? Have you balanced the wheels and seen them while being balanced to see if they are true/straight?
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03-10-2023, 11:54 AM	#3
codeterrorist Private First Class 97 Rep 136 Posts Drives: 328i Join Date: May 2020 Location: Earth iTrader: (0)	Hubcentric rings are crap. I had aftermarket rims that had like a 0.something mm and it was a horrible drive on high and even moderate speeds. I was afraid I would damage something so I immediately turned around and had them install my old rims. Not only that, but getting those rings on was so frustrating for the tyre shop too. They kept breaking every time they try to mount the rims. So imagine if you need to take off the rims for whatever reason; you will most likely need to replace every time. Best to get OEM rims. Skip the trouble. That's my opinion.
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