So one of my center caps came off. Would I need to take out the wheel to put it back on. It is the only one that is loose and I'm afraid it might come loose when driving it. How do I go about to putting it back on tight? I currently stuffed papers on it which doesn't look good. Thanks.

 

You can put it back on without removing the wheel. The issue it is most likely loose is that there is a little metal ring on the inside of that cap. That may have been lost or bent/broken. You'll need to see if that is there first.

 

Where can I buy the ring? Thanks

 

Ebay is the best bet. Not sure if they are sold separately from the caps though