I know It is hard to find nice set of rims for e30.
As I was looking for a set for my car, I stumbled across these TSW rims.
I like them and was going to buy them, but i found something else.
I have not seen them, but they do look like euroweaves, but with slightly bigger lip. 15x7 et20, with the same center bore as e30.
In my unbiased opinion they are worth to be checked out. I think TSW makes nice rims.