I have a 94 325 convertible that has these wheels on it. I do not think they are the original wheels. Please let me know if you can identify them. :help

I actually have two problems. First, I've lost a center cap and need to find a replacement. Second, and most important, I have a vibration in the front end and I think it's because I need to buy hubcentric rings to make these wheels fit my car. However, since I don't know what these are, I have no way of knowing what size (if any) ring I need. If you can help with the ring size (source) I would appreciate it as well.

I have had the front suspension rebuilt as well as new rotors and calipers. That is if you were thinking that's where the vibration was coming from. :nono

Thanks

p.s. Somebody suggested these were from a e39 528 but I'm looking for confirmation.

That is an OE wheel that was mfg for BMW by BBS. You will need to get the caps from BMW.

yes those are E39 wheels, the reason you're getting the vibration is that the hub size is different on the e39's and e36's, hence you need a hubcentric ring. However, take those off, I bet because of the offset they stick out way too far and look wierd!