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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > centering ring question?



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      01-23-2008, 05:04 AM   #1
SilentJ
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centering ring question?

I am still new to this rims upgrading thing, i am just wondering:

1. What is a centering ring?

2. What is it for?

3. Will it affect handling?

4. Is it safe to be on track with rims require a centering ring?


thx
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      01-23-2008, 06:29 AM   #2
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i would like to know this also !
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      01-23-2008, 10:59 AM   #3
turbotko
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It's a hubcentric ring that allows aftermarket wheels that have a larger center hole to still center on the hub. All OEM wheels have a center hole that perfectly fits the hub which properly centers the wheels. The hubcentric ring just takes up the space on a wheel with a larger hole. The rings are a pain in the ass IMO and I try to avoid them at all costs, but I've never heard of anything going bad wrong with them. After all, they are just plastic or metal rings that slip over the hub before putting the wheels on.

If you run wheels that are not hubcentric and do not use a ring, you will almost always get a vibration from the wheels not being perfectly centered.
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      01-24-2008, 05:44 AM   #4
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Quote:
Originally Posted by turbotko View Post
It's a hubcentric ring that allows aftermarket wheels that have a larger center hole to still center on the hub. All OEM wheels have a center hole that perfectly fits the hub which properly centers the wheels. The hubcentric ring just takes up the space on a wheel with a larger hole. The rings are a pain in the ass IMO and I try to avoid them at all costs, but I've never heard of anything going bad wrong with them. After all, they are just plastic or metal rings that slip over the hub before putting the wheels on.

If you run wheels that are not hubcentric and do not use a ring, you will almost always get a vibration from the wheels not being perfectly centered.
+1 very well said. I'm glad all my BMW wheels are hub centric.
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