Hello guys, I got my used 350z a month ago from a dealer and when I picked it up, it was equipped with aftermarket wheels. Stock wheels were thrown in for free as well. The whole month I was driving with aftermarket rims but at the end of the month, I had a mechanic at a workshop replace my wheels due to the annual inspection at our local Land Transport Department before they give us a new tax disc (only cars equipped with OEM items will be given new tax discs).

So, what concerns me is this, when the aftermarket wheels were removed, I got home and and found out these things removed as well:

(they are like four onion rings)

What are those? Did they come with the aftermarket wheels or are they a part of the car? Should I be worried that it's no longer attached to the car anymore? I drove home from the workshop with the stock wheels and didn't have any problem.

 

Can't really tell from the tiny pic but it could be a hubcentric ring?

 

I googled image 'hubcentric rings' and yes those are it. I just read some posts on it (here) as well and found out stock wheels are hubcentric so I should worry less now.

 

"Wheel Hub Centric Rings are designed to fill in the gap between the hub of the car and the center bore of the wheel. Most wheel manufacturers design their wheels with a centerbore large enough to fit on most cars. Therefore, since wheel manufactures make their center bore large enough to fit most cars, most wheel fitments have a gap between the hub and the centerbore. This gap usually doesn't allow for the wheel to fit hubcentric but rather lugcentric which causes vibration. Therefore, to fill the gap and ensure the fitment is hubcentric, hub rings are used."

 

Yes, look like a centering ring/hubcentric ring. Helps ensure the wheel stays centered on the hub when installing. Nonmoving part that snaps in the backside of your wheel. Very common in the aftermarket wheel world.