what am I missing re spacers??

ny330xi · 03-20-2016, 09:03 PM

Never run spacers before, so I'm a little confused.

Spacers are hubcentric and wheels are hubcentric. So, if the lip on the spacer is sliding over the lip on the hub, wouldn't that mean the spacer lip would be the same diameter as the wheel's centerbore?

gavronm · 03-21-2016, 09:03 AM

The hub and the spacer lip are tapered/conical - they aren't perfect cylinders. It's kind of like stacking solo cups.

shadow191 · 03-21-2016, 09:22 AM

If the spacer is thin enough, the original hub ring sticks out past the spacer. For those that have their own hubcentric ring, the backside is machined to accept your OEM hub ring. Only potential issue is on some 10mm spacers, there wasn't enough room to machine the backside to accept the hub ring and it would bottom out before seating flush. But that was some time ago and I think all spacer companies have figured it out.

If you look at the backside of hubcentric spacers, there should be a step. So bigger hole for OEM hub, then it steps in for the hubcentric portion of the spacer.

ny330xi · 03-22-2016, 07:11 AM

Thanks for the responses!

03-20-2016, 09:03 PM	#1
ny330xi Second Lieutenant 17 Rep 254 Posts Drives: 2006 330xi Join Date: Apr 2013 Location: upstate iTrader: (0)	what am I missing re spacers?? Never run spacers before, so I'm a little confused. Spacers are hubcentric and wheels are hubcentric. So, if the lip on the spacer is sliding over the lip on the hub, wouldn't that mean the spacer lip would be the same diameter as the wheel's centerbore?
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03-21-2016, 09:03 AM	#2
gavronm First Lieutenant 88 Rep 358 Posts Drives: 2011 335D M-Sport Join Date: Feb 2015 Location: United States iTrader: (0)	The hub and the spacer lip are tapered/conical - they aren't perfect cylinders. It's kind of like stacking solo cups.
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03-21-2016, 09:22 AM	#3
shadow191 Lieutenant Colonel 181 Rep 1,681 Posts Drives: 2017 Volvo XC90 R-Design Join Date: Dec 2012 Location: GA iTrader: (3)	If the spacer is thin enough, the original hub ring sticks out past the spacer. For those that have their own hubcentric ring, the backside is machined to accept your OEM hub ring. Only potential issue is on some 10mm spacers, there wasn't enough room to machine the backside to accept the hub ring and it would bottom out before seating flush. But that was some time ago and I think all spacer companies have figured it out. If you look at the backside of hubcentric spacers, there should be a step. So bigger hole for OEM hub, then it steps in for the hubcentric portion of the spacer. Last edited by shadow191; 03-21-2016 at 09:27 AM..
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03-22-2016, 07:11 AM	#4
ny330xi Second Lieutenant 17 Rep 254 Posts Drives: 2006 330xi Join Date: Apr 2013 Location: upstate iTrader: (0)	Thanks for the responses!
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